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XC9503 Series 2ch. Step-down DC/DC Controller ICs Mar. 14, 2003 Ver. 2 Applications 2ch DC/DC Controller (Step-down + Step-down) Input Voltage Range 2.0V ~ 10.0V Output Voltage Externally Set-Up Switching Frequency 300kHz (15%) Maximum Duty Cycle 100% PWM, PWM/PFM Switching Control High Efficiency Step-down 92% (Typ.) Small MSOP-10 package PDAs Palm Top Computers Digital Cameras Various Multi-Function Power Supplies Features Input Voltage Range : 2.0V ~ 10V Power Supply Voltage Range : 2.0V ~ 10V Output Voltage Range : 0.9V ~ 6.0V Can be set freely with 0.9V (2.0%) of reference voltage supply and external components. Oscillation Frequency Output Current Stand-By Function Package Soft-Start Time : 300kHz 15% General Description The XC9503 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functional, 2 channel step-down DC/DC controller ICs. Since the series has a built-in 0.9V reference voltage (accuracy 2%), 0.9V to 6.0V can be set using external components. With a 300kHz frequency, the size of the external components can be reduced. Switching frequencies of 180kHz & 500kHz are also available as customdesigned products. The control of the XC9503 series can be switched between PWM control and PWM/PFM automatic switching control using external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. Noise is easily reduced with PWM control since the frequency is fixed. The series gives freedom to select control suited to the application. Soft-start time is internally set to 10msec and offers protection against in-rush currents when the power is switched on and also protects against voltage overshoot. (180kHz, 500kHz custom) : more than 1000mA (VIN=5.0V, VOUT=3.3V) : 3.0A (MAX.) : MSOP-10 : 10 ms (internally set) Typical Performance Characteristics XC9503B093A (300kHz,VOUT1:3.3V) L1=22H(CDRH5D28), CL1=47F(Tantalum) SD1:MA2Q737, Tr1:XP162A1355P 100 90 Efficiency 1 EFFI1 (%) 80 70 60 50 40 30 20 10 0 0.1 PWM PWM/PFM Switching VIN=5.0V Typical Application Circuit XC9503B093A Input : VOUT1 : 3.3V, VOUT2 : 1.8V L1:22H CDRH5D28 Tr1:Pch MOSFET XP162A12A6P 1 10 100 Output Current 1 IOUT1(mA) 1000 VOUT1:3.3V Tr2:Pch MOSFET XP162A12A6P L2:22H CDRH5D28 VOUT2:1.8V SD2 :MA2Q737 SD1 :MA2Q737 RFB11 :200k CFB1 :62pF VIN =5.0V CIN :47F CFB2 :62pF 1 EXT1/ EXT2/ 10 GND 9 FB2 8 PWM2 7 EN2 6 VPWM2 VEN2 RFB21 :220k CL2: 47FX2 CL1: 47FX2 VPWM1 2 VDD 3 FB1 4 PWM1 5 EN1 RFB12 :75k VEN1 RFB22 :220k 1 XC9503 Series 2ch. Step-down DC/DC Controller ICs Pin Configuration 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 MSOP-10 (TOP VIEW) Pin Assignment PIN NUMBER 1 2 3 4 5 6 7 8 9 10 PIN NAME EXT 1 VDD FB1 PWM1 EN1 EN2 PWM2 FB2 GND EXT 2 FUNCTIONS Channel 1: External Transistor Drive Pin Ordering Information XC9503123456 DESIGNATOR SYMBOL DESCRIPTION Standard (10 Pin) FB Voltage 0.9V Switching Frequency 180kHz (custom) 300kHz 500kHz (custom) Package Embossed Tape MSOP-10 Standard Feed Reverse Feed 1 2 3 4 5 6 B 0 9 2 3 5 A R L 2 XC9503 Series 2ch. Step-down DC/DC Controller ICs Block Diagram EXT1 PWM/PFM Controller 1 PWM/PFM Controller 2 EXT2 PWM Comparator1 PWM Comparator2 VDD + - - + GND FB1 + Error Amp1 Ramp Wave Generator 1 + Ramp Wave Error Amp2 Generator 2 FB2 PWM1 OSC Generator Vref1 = 0.9V with Soft Start1, EN1 EN1 to internal circuit Vref2 = 0.9V with Soft Start 1, EN2 PWM2 EN1 EN2 EN2 to internal circuit Absolute Maximum Ratings Ta=25OC PARAMETER VDD Pin Voltage FB1, 2 Pin Voltage EN1, 2 Pin Voltage PWM1,2 Pin Voltage EXT1, 2 Pin Voltage EXT1, 2 Pin Current Power Dissipation Operating Ambient Temperature Storage Temperature SYMBOL VDD VFB VEN VPWM VEXT IEXT Pd Topr Tstg RATINGS - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ VDD + 0.3 100 150 - 40 ~ + 85 UNITS V V V V V mA mW O O C C - 55 ~ +125 * Voltage goes to Ground. 3 XC9503 Series Electrical Characteristics Common Characteristics PARAMETER Supply Voltage Max. Input Voltage Output Voltage Range (note 1) Supply Current 1 SYMBOL VDD VIN VOUTSET IDD1 VIN 2.0V, IOUT1, 2=1mA 2ch. Step-down DC/DC Controller ICs XC9503B092A Ta=25OC CONDITIONS MIN. 2.0 10.0 0.9 0.9 153 0.65 TYP. 60 50 60 60 1.0 180 MAX. 10.0 10.0 10.0 120 110 130 140 3.0 207 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 UNITS V V V V A A A A A kHz V V A A A A A A TEST CIRCUIT 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 VOUT1 VOUT2 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-1 IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V Supply Current 1-2 IDD1-2 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V Stand-by Current ISTB Same as IDD1, EN1=EN2=0V Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V EN1,2 "High" Current IENH EN1,2=3.0V EN1,2 "Low" Current IENL EN1,2=0V, FB1,2=3.0V PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V FB1,2 "High" Current IFBH FB1, 2=3.0V FB1,2 "Low" Current VFBL FB1, 2=1.0V Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage Minimum Operation Voltage Maximum Duty Ratio 1 Minimum Duty Ratio1 PFM Duty Ratio 1 Efficiency1 (note 2) SYMBOL VFB1 VINmin1 MAXDTY1 MINDTY1 PFMDTY1 EFFI1 Step-down Controller CONDITIONS VIN=3.0V, IOUT1=10mA Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT1=250mA P-ch MOSFET : XP162A12A6P VOUT1 x 0.95V, EN1=0V0.65V MIN. 0.882 100 22 - TYP. 0.900 30 92 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 3 1 2 2 4 4 4 5 5 4 4 Soft-Start Time1 TSS1 10.0 5.0 EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V 28 22 EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 Efficiency2 (note 2) SYMBOL VFB2 VINmin2 MAXDTY2 MINDTY2 PFMDTY2 EFFI2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V MIN. 0.882 100 22 TYP. 0.900 30 92 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 6 1 2 2 7 7 7 5 5 7 7 10.0 5.0 TSS2 Soft-Start Time 2 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 VPWMH2 No Load 0.65 PWM2 "High" Voltage PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Notes 1) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 4 XC9503 Series Electrical Characteristics Common Characteristics PARAMETER Supply Voltage Max. Input Voltage Output Voltage Range (note 1) Supply Current 1 SYMBOL VDD VIN VOUTSET IDD1 VIN 2.0V, IOUT1, 2=1mA 2ch. Step-down DC/DC Controller ICs XC9503B093A Ta=25OC CONDITIONS MIN. 2.0 10.0 0.9 0.9 255 0.65 TYP. 70 60 70 80 1.0 300 MAX. 10.0 10.0 10.0 140 120 150 150 3.0 345 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 UNITS V V V V A A A A A kHz V V A A A A A A TEST CIRCUIT 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 VOUT1 VOUT2 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-1 IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V Supply Current 1-2 IDD1-2 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V Stand-by Current ISTB Same as IDD1, EN1=EN2=0V Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V EN1,2 "High" Current IENH EN1,2=3.0V EN1,2 "Low" Current IENL EN1,2=0V, FB1,2=3.0V PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V FB1,2 "High" Current IFBH FB1, 2=3.0V FB1,2 "Low" Current VFBL FB1, 2=1.0V Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage Minimum Operation Voltage Maximum Duty Ratio 1 Minimum Duty Ratio1 PFM Duty Ratio 1 Efficiency1 (note 2) SYMBOL VFB1 VINmin1 MAXDTY1 MINDTY1 PFMDTY1 EFFI1 Step-down Controller CONDITIONS VIN=3.0V, IOUT1=10mA Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT1=250mA P-ch MOSFET : XP162A12A6P VOUT1 x 0.95V, EN1=0V0.65V MIN. 0.882 100 22 - TYP. 0.900 30 92 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 3 1 2 2 4 4 4 5 5 4 4 Soft-Start Time1 TSS1 5.0 10.0 EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V 28 EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V 22 PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 Efficiency2 (note 2) SYMBOL VFB2 VINmin2 MAXDTY2 MINDTY2 PFMDTY2 EFFI2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V MIN. 0.882 100 22 TYP. 0.900 30 92 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 6 1 2 2 7 7 7 5 5 7 7 Soft-Start Time 2 TSS2 5.0 10.0 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.65 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Notes 1) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 5 XC9503 Series Electrical Characteristics Common Characteristics PARAMETER Supply Voltage Max. Input Voltage Output Voltage Range (note 1) Supply Current 1 SYMBOL VDD VIN Voutset IDD1 VIN 2.0V, IOUT1, 2=1mA 2ch. Step-down DC/DC Controller ICs XC9503B095A Ta=25OC CONDITIONS MIN. 2.0 10.0 0.9 0.9 425 0.65 TYP. 90 80 100 100 1.0 500 MAX. 10.0 10.0 10.0 170 150 180 190 3.0 575 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 UNITS V V V V A A A A A kHz V V A A A A A A TEST CIRCUIT 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 VOUT1 VOUT2 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-1 IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V Supply Current 1-2 IDD1-2 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V Stand-by Current ISTB Same as IDD1, EN1=EN2=0V Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V EN1,2 "High" Current IENH EN1,2=3.0V IENL EN1,2=0V, FB1,2=3.0V EN1,2 "Low" Current PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V FB1,2 "High" Current IFBH FB1, 2=3.0V FB1,2 "Low" Current VFBL FB1, 2=1.0V Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage Minimum Operation Voltage Maximum Duty Ratio 1 Minimum Duty Ratio1 PFM Duty Ratio 1 Efficiency1 (note 2) SYMBOL VFB1 VINmin1 MAXDTY1 MINDTY1 PFMDTY1 EFFI1 Step-down Controller CONDITIONS VIN=3.0V, IOUT1=10mA Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT1=250mA P-ch MOSFET : XP162A12A6P VOUT1 x 0.95V, EN1=0V0.65V MIN. 0.882 100 22 - TYP. 0.900 30 91 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 3 1 2 2 4 4 4 5 5 4 4 10.0 Soft-Start Time1 TSS1 5.0 EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V 28 EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V 22 PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 Efficiency2 (note 2) SYMBOL VFB2 VINmin2 MAXDTY2 MINDTY2 PFMDTY2 EFFI2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V MIN. 0.882 100 22 TYP. 0.900 30 91 MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V TEST CIRCUIT 6 1 2 2 7 7 7 5 5 7 7 10.0 Soft-Start Time 2 TSS2 5.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.65 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Notes 1) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 6 XC9503 Series 2ch. Step-down DC/DC Controller ICs Operational Description The XC9503 series are multi-functional, 2 channel step-down DC/DC converter controller ICs with built-in high speed, low ON resistance drivers. 7 XC9503 Series 2ch. Step-down DC/DC Controller ICs RFB12 (k) 220 180 240 75 18 CFB1 (pF) 33 33 24 62 160 The same method can be adopted for channel two also. [External Components] Tr : * MOSFET XP162A12A6P (TOREX P-Channel Power MOSFET) Note : VGS Breakdown Voltage of this Tr. is 12V so please be careful with the power supply voltage. MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky, TOSHIBA) 10H (SUMIDA, CDRH5D28, FOSC = 500kHz) 22H (SUMIDA, CDRH5D28, FOSC = 300kHz) 22H (SUMIDA, CDRH5D28, FOSC = 180kHz) 16V, 47F (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. C=(CL standard value)x(IOUT (mA)/500mAxVOUT/VIN SD : L: CL : Tr : RB : * PNP MOSFET 2SA1213 (SANYO) 500 ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below. RB (VIN-0.7) x hFE / IC-REXTBH 2200pF (Ceramic) Set according to the equation below. CB (2 x RB x FOSC x 0.7) CB : The same components can be adopted for both channel 1 and channel 2. 8 XC9503 Series 2ch. Step-down DC/DC Controller ICs Test Circuits Circuit 1 L1 VOUT1 PNP Tr1 VI N Circuit 5 PNP Tr2 C IN L2 VOUT2 1 EXT1 2 VDD A RFB21 CFB1 SBD1 1F 3 FB1 4 PWM1 FB2 8 PWM2 7 RFB22 5 EN1 EN2 6 VFB1 VEN 1 VEN 2 VFB2 CL2 RL2 V EXT1 1 F VDD VPWM1 2 VDD GND 9 SBD2 CFB2 4 PWM1 5 EN 1 PWM2 7 EN2 6 VPWM2 VEXT2 3 FB1 FB2 8 EXT2 10 CIN GND 9 A 22 00p F 5 10 2 200pF 5 10 1 EXT1 RFB11 EXT2 10 RL1 CL1 RFB12 Circuit 2 Circuit 6 Pch MOSFET2 1 EXT1 2 VDD 3 FB1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 A A A OSC A A VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 VDD VFB1 VPWM1 VEN1 V EN2 VPWM2 VFB2 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 V CL2 RL SBD2 L2 VOUT2 A OSC A 1 F A A 4 PWM1 5 EN1 Circuit 3 L1 VOUT1 Pch MOSFET1 A CIN 1 EXT1 SBD1 2 VDD V RL 4 PWM1 5 EN1 PWM2 7 EN2 6 CL1 3 FB1 GND 9 FB2 8 EXT2 10 VIN CIN Circuit 7 Pch MOSFET2 L2 VOUT2 A SBD2 VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 200k GND 9 FB2 8 PWM2 7 75k EN 6 2 62 pF V CL2 RL A A Circuit 4 L1 VOUT1 Pch MOSFET1 A A CL1 V RL 200k 62pF SBD1 1 EXT1 2 VDD 3 FB1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VIN CIN 75k 4 PWM1 5 EN1 9 XC9503 Series 2ch. Step-down DC/DC Controller ICs Peripheral Components Used for Test Circuits Circuit 1 L1, L2 : 22H (SUMIDA CDRH5D28) : XC9503B092A 15H (SUMIDA CDRH5D28) : XC9503B093A 10H (SUMIDA CDRH5D28) : XC9503B095A CRS02 (Schottky diode, TOSHIBA) EC10QS06 (Schottky diode, NIHON INTER) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 2SA1213 (TOSHIBA) Please use by the conditions as below. RFB11 + RFB12 1M RFB21 + RFB22 1M RFB11 / RFB12 = (Setting Output Voltage / 0.9) -1 VOUT2=(0.9-VOUT1) X (RFB21/RFB22) + 0.9V Please adjust as below: fzfb=1/(2 x x CFB1 x RFB11) = 1kHz ~50kHz ( 12kHz usual) fzfb=1/(2 x x CFB2 x RFB21) = 1kHz ~50kHz ( 12kHz usual) 22H (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A12A6P (TOREX) SD1, SD2 : CL1, CL2 : CIN : PNP Tr1, 2: RFB : CFB : Circuits 3 L1 : SD1 : CL1 : CIN : P-ch MOSFET1 : Circuits 4 L1 : 22H (SUMIDA CDRH5D28) : XC9503B092A 15H (SUMIDA CDRH5D28) : XC9503B093A 10H (SUMIDA CDRH5D28) : XC9503B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A12A6P (TOREX) SD1 : CL1 : CIN : P-ch MOSFET1 : Circuit 6 L1 : SD1 : CL1 : CIN : P-ch MOSFET2 : Circuit 7 L2 : 22H (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) SD2 : CL2 : CIN : P-ch MOSFET2 : 22H (SUMIDA CDRH5D28) : XC9503B092A 15H (SUMIDA CDRH5D28) : XC9503B093A 10H (SUMIDA CDRH5D28) : XC9503B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A12A6P (TOREX) 10 XC9503 Series Notes on Use 2ch. Step-down DC/DC Controller ICs 1. Checking for Intermittent Oscillation The XC9503 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. Check waveforms at EXT under your operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance CL. 2. PWM/PFM Automatic Switching If PWM/PFM automatic switching control is selected and the step-down ratio is high (e.g., from 10 V to 1.0 V), the control mode remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9503 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9503 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of PWM/PFM automatic switching control shown on the data sheets are available up to IOUT = 100 mA. 3. Ratings Use the XC9503 series and peripheral components within the limits of their ratings. 11 XC9503 Series Typical Performance Characteristics (1) Output Voltage vs. Output Current 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=1.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOCS=300kHz, VOUT1, 2=1.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P 1.2 Output Voltage1, 2 VOUT1, 2 (V) 1.1 1.0 0.9 0.8 0.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V Output Voltage1, 2 VOUT1, 2 (V) PWM Control 1.2 PWM/PFM Switching Control 1.1 5.0V 1.0 0.9 0.8 0.7 0.1 1 10 VIN=2.7V 3.3V 4.2V, 6.0V 8.0V 10.0V 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=1.8V 2.0 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=1.8V 2.0 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 1.9 1.9 6.0V 8.0V 10.0V 1.8 1.8 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 1.6 1.6 1.5 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 1.5 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=2.5V 2.7 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=2.5V 2.7 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 2.6 10.0V 2.6 8.0V 2.5 10.0V 2.5 2.4 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 2.4 3.3V 4.2V 5.0V 6.0V 2.3 VIN=2.7V 2.3 2.2 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 2.2 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 12 XC9503 Series (1) Output Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=3.3V 3.5 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=3.3V 3.5 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 3.4 VIN=4.2V 5.0V 6.0V 8.0V 3.4 VIN=4.2V 5.0V 6.0V 8.0V 3.3 10.0V 3.3 3.2 3.2 10.0V 3.1 3.1 3.0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 3.0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=5.0V 5.2 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=5.0V 5.2 Output Voltage1, 2 VOUT1, 2 (V) L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 5.1 10.0V 5.1 10.0V 5.0 VIN= 6.0V 8.0V 5.0 VIN= 6.0V 8.0V 4.9 4.9 4.8 4.8 4.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 4.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=180kHz, VOUT1, 2=1.0V 1.2 Output Voltage1, 2 VOUT1, 2 (V) L=47H(CDRH6D38), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=180kHz, VOUT1, 2=1.0V 1.2 Output Voltage1, 2 VOUT1, 2 (V) L=47H(CDRH6D38), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 1.1 10.0V 1.1 10.0V 1.0 1.0 0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 0.9 4.2V 5.0V 6.0V 8.0V VIN=2.7V 3.0V 0.8 0.8 0.7 0.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 13 XC9503 Series (1) Output Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=180kHz, VOUT1, 2=3.3V 3.5 Output Voltage1, 2 VOUT1, 2 (V) 3.4 3.3 3.2 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.1 3.0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=47H(CDRH6D38), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOSC=180kHz, VOUT1, 2=5.0V 5.2 Output Voltage1, 2 VOUT1, 2 (V) 5.1 5.0 4.9 VIN= 6.0V 8.0V 10V 4.8 4.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=47H(CDRH6D38), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control FOSC=500kHz, VOUT1, 2=1.0V 1.2 Output Voltage1, 2 VOUT1, 2 (V) 1.1 1.0 0.9 0.8 0.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=500kHz, VOUT1, 2=1.0V 1.2 Output Voltage1, 2 VOUT1, 2 (V) 1.1 1.0 0.9 0.8 0.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10.0V FOSC=500kHz, VOUT1, 2=3.3V 3.5 Output Voltage1, 2 VOUT1, 2 (V) 3.4 3.3 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.2 3.1 3.0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=500kHz, VOUT1, 2=3.3V 3.5 Output Voltage1, 2 VOUT1, 2 (V) 3.4 3.3 VIN=4.2V 5.0V 6.0V 8.0V 3.2 3.1 3.0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 10.0V * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 14 XC9503 Series (1) Output Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=500kHz, VOUT1, 2=5.0V 5.2 Output Voltage1, 2 VOUT1, 2 (V) 5.1 5.0 VIN= 6.0V 8.0V 10V 4.9 4.8 4.7 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control 15 XC9503 Series (2) Efficiency vs. Output Current 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=1.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control FOSC=300kHz, VOUT1, 2=1.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 100 Efficiency1, 2 EFFI1, 2 (%) 80 10.0V 6.0V 8.0V 60 40 20 VIN=5.0V 0 4.2V 40 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 3.3V VIN=2.7V 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=1.8V 100 Efficiency1, 2 EFFI1, 2 (%) 80 VIN= 2.7V 60 3.3V 40 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 4.2V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOSC=300kHz, VOUT1, 2=1.8V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P 100 Efficiency1, 2 EFFI1, 2 (%) 80 10.0V 60 40 6.0V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=5.0V 8.0V FOSC=300kHz, VOUT1, 2=2.5V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOSC=300kHz, VOUT1, 2=2.5V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control 100 Efficiency1, 2 EFFI1, 2 (%) 80 100 Efficiency1, 2 EFFI1, 2 (%) 80 10V 60 VIN=2.7V 60 40 20 PWM/PFM Switching Control PWM Control 3.3V 4.2V VIN=5.0V 40 20 0 6.0V 8.0V 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 16 XC9503 Series (2) Efficiency vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=3.3V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control FOSC=300kHz, VOUT1, 2=5.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 40 20 0 0.1 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 40 20 0 10.0V 10.0V 8.0V VIN=6.0V 8.0V 6.0V VIN=4.2V 5.0V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) FOSC=180kHz, VOUT1, 2=1.0V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control FOSC=180kHz, VOUT1, 2=1.0V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 40 20 0 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 VIN=5.0V 8.0V 4.2V 3.3V VIN=2.7V 6.0V 40 10V 20 PWM/PFM Switching Control PWM Control 0 0.1 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) FOSC=180kHz, VOUT1, 2=3.3V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOSC=180kHz, VOUT1, 2=5.0V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 40 20 5.0V VIN=4.2V 10V 8.0V 40 20 PWM/PFM Switching Control PWM Control 10V 8.0V VIN=6.0V 6.0V PWM/PFM Switching Control PWM Control 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 17 XC9503 Series (2) Efficiency vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=500kHz, VOUT1, 2=1.0V 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 40 3.3V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=2.7V 4.2V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P FOSC=500kHz, VOUT1, 2=1.0V 100 Efficiency1, 2 EFFI1, 2 (%) 80 VIN=5.0V 60 40 8.0V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 6.0V 10V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control FOSC=500kHz, VOUT1, 2=3.3V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control FOSC=500kHz, VOUT1, 2=3.3V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control PWM Control 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 100 Efficiency1, 2 EFFI1, 2 (%) 80 60 10.0V 8.0V 6.0V 10.0V 40 20 0 8.0V VIN=6.0V 40 20 0 0.1 1 10 5.0V VIN=4.2V 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 18 XC9503 Series (3) Ripple Voltage vs. Output Current 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=1.0V 100 Ripple Voltage1, 2 (mV) 80 60 VIN=2.7V 3.3V 5.0V 6.0V 40 8.0V 10V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 4.2V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=1.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=2.7V 8.0V 3.3V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 6.0V 5.0V 10V 4.2V FOSC=300kHz, VOUT1, 2=1.8V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=1.8V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 5.0V 4.2V 10V 8.0V 6.0V 3.3V VIN=2.7V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=2.5V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=2.5V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V VIN=2.7V 10V 8.0V 6.0V 5.0V 4.2V 3.3V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 19 XC9503 Series (3) Ripple Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=300kHz, VOUT1, 2=3.3V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=3.3V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 VIN=4.2V 5.0V 6.0V 8.0V 10V VIN=4.2V 5.0V 6.0V 8.0V 10.0V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) FOSC=300kHz, VOUT1, 2=5.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=300kHz, VOUT1, 2=5.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 VIN=6.0V 20 0 8.0V 10.0V L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 VIN=6.0V 40 10V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 8.0V 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=180kHz, VOUT1, 2=1.0V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=180kHz, VOUT1, 2=1.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 VIN=2.7V L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 4.2V 10V 5.0V 6.0V 8.0V 3.3V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 20 XC9503 Series (3) Ripple Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=180kHz, VOUT1, 2=3.3V 100 PWM Control FOSC=180kHz, VOUT1, 2=3.3V 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P Ripple Voltage1, 2 (mV) 80 60 40 8.0V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 5.0V VIN=4.2V 6.0V 10V VIN=4.2V 5.0V 6.0V 8.0V 10V 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=180kHz, VOUT1, 2=5.0V 100 PWM Control FOSC=180kHz, VOUT1, 2=5.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 VIN=6.0V 20 0 L=47H(CDRH6D28), CL=94F(Tantaium) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control L=47H(CDRH6D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P Ripple Voltage1, 2 (mV) 80 60 40 8.0V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) VIN=6.0V 10V 8.0V 10V 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=500kHz, VOUT1, 2=1.0V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=500kHz, VOUT1, 2=1.0V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 100 Ripple Voltage1, 2 (mV) 80 60 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V VIN=2.7V 40 8.0V 10V 5.0V 6.0V 20 0 4.2V 3.3V 1 10 100 1000 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) Output Current1, 2 IOUT1, 2 (mA) * When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V, CL should be 94F (Tantalum) + 100F (OS-COM) 21 XC9503 Series (3) Ripple Voltage vs. Output Current (continued) 2ch. Step-down DC/DC Controller ICs FOSC=500kHz, VOUT1, 2=3.3V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=500kHz, VOUT1, 2=3.3V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 100 Ripple Voltage1, 2 (mV) 80 60 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 8.0V 10V 40 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 5.0V VIN=4.2V 6.0V VIN=4.2V 5.0V 6.0V 8.0V 10V 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) FOSC=500kHz, VOUT1, 2=5.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 8.0V VIN=6.0V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM Control FOSC=500kHz, VOUT1, 2=5.0V 100 Ripple Voltage1, 2 (mV) 80 60 40 VIN=6.0V 20 0 0.1 1 10 100 1000 Output Current1, 2 IOUT1, 2 (mA) 8.0V L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP162A12A6P PWM/PFM Switching Control 10V 10V 22 XC9503 Series (4) Supply Current 1 vs. Supply Voltage 2ch. Step-down DC/DC Controller ICs (5) Supply Current 1_1 vs. Supply Voltage XC9503B092 (180KHz) 250 Supply Current 1 IDD1 (A) 200 150 100 50 0 0 2 4 6 8 10 Supply Voltage VDD (V) 250 Suppy Current 1-1 IDD1-1 (A) 200 150 100 50 0 0 XC9503B092 (180KHz) Topr=85OC 25OC - 40OC Topr=85OC 25OC - 40OC 2 4 6 8 10 Supply Voltage VDD (V) (6) Supply Current 1_2 vs. Supply Voltage (7) Supply Current 2 vs. Supply Voltage XC9503B092 (180KHz) Supply Current 1-2 IDD1-2 (A) 250 200 150 100 50 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85OC Topr=85OC 25OC 25OC - 40OC 40OC 250 Supply Current 2 IDD2 (A) 200 150 100 50 0 0 XC9503B092 (180KHz) Topr=85OC 25OC - 40OC 2 4 6 8 10 Supply Voltage VDD (V) (8) Stand-by Current vs. Supply Voltage (9) Oscillation Frequency vs. Supply Voltage XC9503B092 (180KHz) Oscillaltion Frequency Fosc (kHz) 10 Stand-by Curret ISTB (A) 8 6 4 2 0 0 2 4 6 8 10 Suppy Voltage VDD (V) 360 XC9503B093(180kHz) Topr=85OC 25OC - 40OC 330 300 270 240 0 2 4 6 8 10 Supply Voltage VDD (V) 23 XC9503 Series (10) EN1, 2 'High' 'Low' Voltage vs. Supply Voltage 2ch. Step-down DC/DC Controller ICs (11) PWM1, 2 'High' 'Low' Voltage vs. Supply Voltage XC9503B093 (300KHz) EN1, 2 'H' 'L' Voltage VEN1, 2(V) PWM1, 2 'H' 'L' Voltage VPWM1, 2 (V) XC9503B093 (300KHz) 0.8 0.8 0.6 - 40OC 0.4 85OC 0.2 Topr=25OC 0.6 - 40OC 0.4 85OC Topr=25 C 0.2 O 0 0 2 4 6 8 10 Supply Voltage VDD (V) 0 0 2 4 6 8 10 Supply Voltage VDD (V) (12) PFM duty ratio 1, 2 vs. Supply Voltage (13) Output Voltage vs. Ambient Temperature XC9503B093(300kHz) 40 PFM duty ratio 1, 2 (%) Topr=85OC 25OC - 40OC 3.5 Output Voltage VOUT1, 2 (V) 3.4 3.3 3.2 3.1 3.0 0 2 4 6 8 10 0 XC9503B093(300kHz) L=22H(CDRH5D28), CL=94F (Tantalum) SD:CMS02 Tr:XP162A12A6 35 30 25 VIN=5.0V IOUT1, 2 =200mA 2 4 6 8 10 20 Supply Voltage VDD (V) Supply Voltage VDD (V) (14) EXT1, 2 'High' On Resistance vs. Supply Voltage (14) EXT1, 2 'Low' On Resistance vs. Supply Voltage XC9503B092 (180KHz) EXT1, 2 'High' On Resistance () EXT1, 2 'Low' ON Resistance () 50 40 30 20 10 0 0 2 4 6 8 10 Supply Voltage VDD (V) 50 40 30 20 10 0 0 XC9503B092 (180KHz) Topr=85OC 25OC - 40OC Topr=85OC 25OC - 40OC 2 4 6 8 10 Supply Voltage VDD (V) 24 XC9503 Series (16) Soft Start Time 1, 2 vs. Supply Voltage 2ch. Step-down DC/DC Controller ICs XC9503B092 (180KHz) Soft Start Time 1, 2 TSS1, 2 (msec) 25 20 15 10 5 0 0 2 4 6 8 10 Supply Voltage VDD (V) 25 XC9503 Series ! Load Transient Response < VOUT1, 2 = 3.3 V, VIN = 5.0V " PWM Control FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 100A " 300mA 2ch. Step-down DC/DC Controller ICs IOUT1, 2 = 100A ! 300mA > FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 300mA " 100A CH1 3.3V CH1 3.3V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 100mV/div CH2 : IOUT1, 2, 150mA/div 100A CH2 10msec / div CH1 : VOUT1, 2, AC-COUPLED, 50mV/div CH2 : IOUT1, 2, 150mA/div 100A " PWM / PFM Switching Control FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 100A " 300mA FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 300mA " 100A CH1 3.3V CH1 3.3V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 100mV/div CH2 : IOUT1, 2, 150mA/div 100A CH2 10msec / div CH1 : VOUT1, 2, AC-COUPLED, 100mV/div CH2 : IOUT1, 2, 150mA/div 100A 26 XC9503 Series ! Load Transient Response < VOUT1, 2 = 3.3 V, VIN = 5.0V " PWM Control FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 10mA " 300mA 2ch. Step-down DC/DC Controller ICs IOUT1, 2 = 10mA ! 300mA > FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 300mA " 10mA CH1 3.3V CH1 3.3V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 50mV/div CH2 : IOUT1, 2, 150mA/div 10mA CH2 400sec / div CH1 : VOUT1, 2, AC-COUPLED, 50mV/div CH2 : IOUT1, 2, 150mA/div 10mA " PWM / PFM Switching Control FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 10mA " 300mA FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 300mA " 10mA CH1 3.3V CH1 3.3V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 100mV/div CH2 : IOUT1, 2, 150mA/div 10mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 50mV/div CH2 : IOUT1, 2, 150mA/div 10mA 27 XC9503 Series ! Load Transient Response < VOUT1, 2 = 0.9 V, VIN = 3.3V " PWM Control FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 100A " 300mA 2ch. Step-down DC/DC Controller ICs IOUT1, 2 = 100A ! 300mA > FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 300mA " 100A CH1 0.9V CH1 0.9V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 100A CH2 4msec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 100A " PWM / PFM Switching Control FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 100A " 300mA FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 300mA " 100A CH1 0.9V CH1 0.9V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 100A CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 50mV/div CH2 : IOUT1, 2, 150mA/div 100A 28 XC9503 Series ! Load Transient Response < VOUT1, 2 = 0.9 V, VIN = 3.3V " PWM Control FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 10mA " 300mA 2ch. Step-down DC/DC Controller ICs IOUT1, 2 = 10mA ! 300mA > FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 300mA " 10mA CH1 0.9V CH1 0.9V 300mA 300mA CH2 100sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 10mA CH2 100sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 10mA " PWM / PFM Switching Control FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 10mA " 300mA FOSC = 300kHz, VOUT1, 2 = 0.9V VIN = 3.3V, IOUT = 1, 2 = 300mA " 10mA CH1 0.9V CH1 0.9V 300mA 300mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 10mA CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 150mA/div 10mA 29 XC9503 Series ! Load Transient Response < PWM Control ! PWM / PFM Switching Control > 2ch. Step-down DC/DC Controller ICs FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 5mA PWM1, 2 'Low' " 'High' FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 5mA PWM1, 2 'HIgh' " 'Low' CH1 3.3V CH1 3.3V 0.65V 0.65V CH2 400sec / div CH1 : VOUT1, 2, AC-COUPLED, 10mV/div CH2 : IOUT1, 2, 0.5V/div 0V CH2 200sec / div CH1 : VOUT1, 2, AC-COUPLED, 20mV/div CH2 : IOUT1, 2, 0.5V/div 0V < Soft Start Wave Form > FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 300mA EN1, 2 'Low' " 'High' CIN=47F FOSC = 300kHz, VOUT1, 2 = 3.3V VIN = 5.0V, IOUT = 1, 2 = 100mA EN1, 2 'Low' " 'High' CIN=47F 3.3V CH1 200mA CH2 0.65V CH3 4msec / div CH1 : VOUT1, 2, 2.0V/div CH2 : IIN1, 2, 100mA/div CH3 : EN1, 2, 0.5V/div CH3 4msec / div CH1 : VOUT1, 2, 2.0V/div CH2 : IIN1, 2, 50mA/div CH3 : EN1, 2, 0.5V/div * CH1 : EN2=GND when measurement CH2 : EN1=GND when measurement CH2 CH1 3.3V 75mA 0.65V 30 |
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