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| SOT23-6W 120mA 2ch LDO REGULATORS R5322N SERIES APPLICATION MANUAL NO. EA-077-0012 SOT23-6W 120mA 2ch LDO REGULATORS R5322N SERIES OUTLINE The R5322N Series are voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip enable function and prolong the battery life of each system. The line transient response and load transient response of the R5322N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SOT-236W package, and include 2ch LDO regulators each, high density mounting of the ICs on boards is possible. FEATURES * Ultra-Low Supply Current ................................................. TYP 75A (VR1,VR2) . * Standby Mode ..................................................................... TYP 0.1A (VR1,VR2) . * Low Dropout Voltage ......................................................... TYP 0.15V (IOUT=100mA Output Voltage=3.0V Type) . * High Ripple Rejection ........................................................ TYP 75dB (f=1kHz) . * Low Temperature-Drift Coefficient of Output Voltage..... TYP 100ppm/C . * Excellent Line Regulation.................................................. TYP 0.05%/V . * High Output Voltage Accuracy .......................................... 2.0% * Small Package .................................................................... SOT-23-6W * Output Voltage.................................................................... Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible * Built-in chip enable circuit (A/B: active high) * Built-in fold-back protection circuit................................... TYP 40mA (Current at short mode) . APPLICATIONS * Power source for cellular phones such as GSM, CDMA and various kinds of PCS. * Power source for electrical appliances such as cameras, VCRs and camcorders. * Power source for battery-powered equipment. 1 R5322N BLOCK DIAGRAM * R5322Nxxx xxxA xxx CE1 1 + R2-1 Current Limit VDD 2 5 GND R1-1 6 VOUT1 Error Amp. Vref Error Amp. Vref + R1-2 R2-2 Current Limit 4 VOUT2 CE2 3 * R5322Nxxx xxxB xxx CE1 1 + R1-1 6 VOUT1 Error Amp. Vref Current Limit VDD 2 R1-2 Error Amp. Vref Current Limit CE2 3 R2-2 + R2-1 5 GND 4 VOUT2 2 R5322N SELECTION GUIDE The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R5322Nxxxx-xx Part Number abc Code a Contents Setting combination of 2ch Output Voltage (VOUT) : Serial Number for Voltage Setting, Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible for each channel. Designation of Mask Option : b A version: without auto discharge function at OFF state. B version: with auto discharge function at OFF state. c Designation of Taping Type : Ex. TR (refer to Taping Specifications; TR type is the standard direction.) PIN CONFIGURATION 6 SOT-23-6W 5 4 VOUT1 GND VOUT2 (mark side) CE1 VDD CE2 1 2 3 PIN DESCRIPTION Pin No. 1 2 3 4 5 6 Symbol CE1 VDD CE2 VOUT2 GND VOUT1 Description Chip Enable Pin 1 Input Pin Chip Enable Pin 2 Output Pin 2 Ground Pin Output Pin 1 3 R5322N ABSOLUTE MAXIMUM RATINGS Symbol VIN VCE VOUT IOUT1 IOUT2 PD Topt Tstg Input Voltage Input Voltage (CE Pin) Output Voltage Output Current 1 Output Current 2 Power Dissipation Operating Temperature Range Storage Temperature Range Item Rating 6.5 -0.3 ~ VIN+0.3 -0.3 ~ VIN+0.3 130 130 250 -40 ~ 85 -55 ~ 125 Unit V V V mA mA mW C C 4 R5322N ELECTRICAL CHARACTERISTICS * R5322Nxxx xxxA/B xxx Symbol VOUT IOUT Item Output Voltage Output Current Conditions VIN = Set VOUT+1V 1mA IOUT 30mA VIN - VOUT = 1.0V VIN = Set VOUT+1V 1mA IOUT 120mA AGE VIN = Set VOUT+1V VIN = VCE = Set VOUT+1V Set VOUT+0.5V VIN 6V VOUT/VIN Line Regulation IOUT = 30mA (In case that VOUT 1.6V , 2.2V VIN 6V) f = 1kHz, Ripple 0.5Vp-p RR VIN VOUT/T Ilim RPD VCEH VCEL en RLOW Ripple Rejection Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-down Resistance CE Input Voltage "H" CE Input Voltage "L " Output Noise Low Output Nch Tr. ON Resistance (of B version) BW=10Hz to 100kHz VCE=0V IOUT = 30mA -40C Topt 85C VOUT = 0V 1.5 1.5 0.0 30 70 VIN = Set VOUT+1V, IOUT = 30mA 2.2 100 40 4 16 VIN 0.3 6.0 V ppm /C mA M V V Vrms 75 dB 0.05 0.20 %/V 75 0.1 150 1.0 A A MIN. VOUT x0.98 120 12 40 TYP. MAX. VOUT x1.02 Topt=25C Unit V mA mV VOUT/IOUT Load Regulation VDIF ISS Istandby Dropout Voltage Supply Current Supply Current (Standby) Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLT- 5 R5322N * ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Topt = 25C Dropout Voltage Output Voltage VOUT (V) Condition 1.5 VOUT 1.6 1.7 VOUT 1.8 1.9 VOUT 2.0 2.1 VOUT 2.7 2.8 VOUT 4.0 IOUT = 120mA VDIF (V) TYP. 0.36 0.30 0.28 0.24 0.18 MAX. 0.70 0.50 0.45 0.40 0.30 TEST CIRCUITS IOUT2 VOUT2 C3 V 4 VOUT2 CE2 3 4 VOUT2 C3 CE2 3 R5322N SERIES 5 GND VDD 2 A C1 C2 6 VOUT1 CE1 1 ISS R5322N SERIES 5 GND VDD 2 C1 IOUT1 VOUT1 V C2 6 VOUT1 CE1 1 C1=Tantal 1.0F C2=C3=Tantal 2.2F C1=1.0F C2=C3=2.2F Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit IOUT2 4 VOUT2 C3 CE2 3 4 VOUT2 C3 CE2 3 R5322N SERIES 5 GND VDD 2 Pulse Generator R5322N SERIES 5 GND VDD 2 C2 IOUT2a IOUT2b IOUT1b IOUT1a C2 6 VOUT1 CE1 1 IOUT1 C2 6 VOUT1 CE1 1 PG C2=C3=2.2F C1=1.0F C2=C3=2.2F Fig.3 Ripple Rejection, Line Transient Response Test Circuit Fig.4 Load Transient Response Test Circuit 6 R5322N TYPICAL APPLICATION OUT2 4 VOUT2 C3 CE2 3 R5322Nxxxx SERIES 5 GND VDD 2 C1 OUT1 C2 6 VOUT1 CE1 1 IN (External Components) Output Capacitor; Tantalum Type 7 R5322N TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current 1.5V (VR1) 1.6 Output Voltage VOUT(V) 1.6 1.5V (VR2) Output Voltage VOUT(V) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.00 VIN=1.8V VIN=3.5V VIN=2.0V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.00 0.05 0.10 0.15 0.20 VIN=1.8V VIN=3.5V VIN=2.0V VIN=2.5V VIN=2.5V 0.10 0.20 0.30 0.25 0.30 Output Current IOUT(A) Output Current IOUT(A) 2.8V (VR1) 3.0 3.0 VIN=3.1V VIN=3.3V VIN=4.8V 1.5 1.0 0.5 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 VIN=3.5V 2.8V (VR2) Output Voltage VOUT(V) 2.5 2.0 1.5 1.0 0.5 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 VIN=3.5V VIN=3.1V VIN=3.3V VIN=4.8V Output Voltage VOUT(V) 2.5 2.0 Output Current IOUT(A) Output Current IOUT(A) 4.0V (VR1) 4.5 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.00 0.05 0.10 0.15 0.20 0.30 VIN=5.0V VIN=4.3V VIN=4.5V VIN=6.0V 4.5 4.0V (VR2) Output Voltage VOUT(V) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 VIN=5.0V VIN=4.3V VIN=4.5V VIN=6.0V Output Voltage VOUT(V) 4.0 Output Current IOUT(A) Output Current IOUT(A) 8 R5322N 2) Output Voltage vs. Input Voltage 1.5V (VR1) 1.6 1.6 1.5V (VR2) Output Voltage VOUT(V) 1.5 1.4 1.3 IOUT=1mA 1.2 1.1 1.0 1 2 3 4 IOUT=30mA IOUT=50mA Output Voltage VOUT(V) 1.5 1.4 1.3 IOUT=1mA 1.2 1.1 1.0 1 2 3 4 IOUT=30mA IOUT=50mA 5 6 5 6 Input Voltage VIN(V) Input Voltage VIN(V) 2.8V (VR1) 2.9 2.9 2.8V (VR2) Output Voltage VOUT(V) 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1 2 3 4 IOUT=1mA IOUT=30mA IOUT=50mA 5 6 Output Voltage VOUT(V) 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1 2 3 4 IOUT=1mA IOUT=30mA IOUT=50mA 5 6 Input Voltage VIN(V) Input Voltage VIN(V) 4.0V (VR1) 4.2 4.2 4.0V (VR2) Output Voltage VOUT(V) 4.0 3.8 3.6 3.4 3.2 3.0 1 2 3 4 IOUT=1mA IOUT=30mA IOUT=50mA 5 6 Output Voltage VOUT(V) 4.0 3.8 3.6 3.4 3.2 3.0 1 2 3 4 IOUT=1mA IOUT=30mA IOUT=50mA 5 6 Input Voltage VIN(V) Input Voltage VIN(V) 9 R5322N 3) Dropout Voltage vs. Temperature 1.5V (VR1) 1.00 1.00 1.5V (VR2) Dropout Voltage VDIF(V) Topt=85C 25C -40C Dropout Voltage VDIF(V) 0.80 0.60 0.40 0.20 0.00 Topt=85C 25C -40C 0.80 0.60 0.40 0.20 0.00 0 20 40 60 80 100 120 0 20 40 60 80 100 120 Output Current IOUT(mA) Output Current IOUT(mA) 2.8V (VR1) 0.40 0.40 2.8V (VR2) Dropout Voltage VDIF(V) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 40 60 80 100 120 Topt=85C 25C -40C Dropout Voltage VDIF(V) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 Topt=85C 25C -40C 40 60 80 100 120 Output Current IOUT(mA) Output Current IOUT(mA) 4.0V (VR1) 0.40 4.0V (VR2) 0.40 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 Topt=85C 25C -40C 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 Topt=85C 25C -40C 40 60 80 100 120 40 60 80 100 120 Output Current IOUT(mA) Output Current IOUT(mA) 10 R5322N 4) Output Voltage vs. Temperature 1.5V (VR1) 1.54 VIN=2.5V IOUT=30mA 1.54 1.53 1.52 1.51 1.50 1.49 1.48 1.47 1.46 -50 -25 0 25 50 75 100 1.53 1.52 1.51 1.50 1.49 1.48 1.47 1.46 -50 -25 0 25 50 75 100 1.5V (VR2) VIN=2.5V IOUT=30mA Output Voltage VOUT(V) Temperature Topt(C) Output Voltage VOUT(V) Temperature Topt(C) 2.8V (VR1) 2.86 VIN=3.8V IOUT=30mA 2.86 2.8V (VR2) VIN=3.8V IOUT=30mA Output Voltage VOUT(V) 2.84 2.82 2.80 2.78 2.76 2.74 -50 -25 0 25 50 75 100 Output Voltage VOUT(V) 2.84 2.82 2.80 2.78 2.76 2.74 -50 -25 0 25 50 75 100 Temperature Topt(C) Temperature Topt(C) 4.0V (VR1) 4.08 VIN=5.0V IOUT=30mA 4.08 4.0V (VR2) VIN=5.0V IOUT=30mA 4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 75 100 Output Voltage VOUT(V) 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 75 100 Output Voltage VOUT(V) 4.06 Temperature Topt(C) Temperature Topt(C) 11 R5322N 5) Supply Current vs. Input Voltage 1.5V 100 100 2.8V Supply Current ISS(A) Supply Current ISS(A) 80 60 40 VR1 20 VR2 0 0 1 2 3 4 5 6 80 60 40 VR1 20 VR2 0 0 1 2 3 4 5 6 Input Voltage VIN(V) Input Voltage VIN(V) 4.0V 100 Supply Current ISS(A) 80 60 40 VR1 20 VR2 0 0 1 2 3 4 5 6 Input Voltage VIN(V) 6) Supply Current vs. Temperature 1.5V (VR1) 100 VIN=2.5V 1.5V (VR2) 100 Supply Current ISS(A) VIN=2.5V Supply Current ISS(A) 80 60 40 20 0 -50 80 60 40 20 0 -50 0 50 100 0 50 100 Temperature Topt(C) Temperature Topt(C) 12 R5322N 2.8V (VR1) 100 VIN=3.8V 100 2.8V (VR2) VIN=3.8V Supply Current ISS(A) Supply Current ISS(A) 80 60 40 20 0 -50 80 60 40 20 0 -50 -25 0 25 50 75 100 -25 0 25 50 75 100 Temperature Topt(C) Temperature Topt(C) 4V (VR1) 100 VIN=5.0V 100 4V (VR2) VIN=5.0V Supply Current ISS(A) 80 60 40 20 0 -50 Supply Current ISS(A) 50 75 100 80 60 40 20 0 -50 -25 0 25 -25 0 25 50 75 100 Temperature Topt(C) Temperature Topt(C) 7) Dropout Voltage vs. Set Output Voltage VR1 0.70 VR2 Dropout Voltage VDIF(V) IOUT=10mA 30mA 50mA 120mA 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 1.0 2.0 Dropout Voltage VDIF(V) 0.60 0.50 0.40 0.30 0.20 0.10 0.00 1.0 2.0 IOUT=10mA 30mA 50mA 120mA 3.0 4.0 3.0 4.0 Output Voltage VOUT(V) Output Voltage VOUT(V) 13 R5322N 8) Ripple Rejection vs. Frequency 1.5V (VR1) 90 Ripple Rejection RR(dB) 1.5V (VR2) 90 VIN=2.5V+0.5Vp-p COUT=tantal 1.0F Topt=25C VIN=2.5V+0.5Vp-p COUT=tantal 1.0F Topt=25C Ripple Rejection RR(dB) 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 1.5V (VR1) 90 VIN=2.5V+0.5Vp-p COUT=tantal 2.2F Topt=25C 90 1.5V (VR2) VIN=2.5V+0.5Vp-p COUT=tantal 2.2F Topt=25C Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 2.8V (VR1) 90 VIN=3.8V+0.5Vp-p COUT=tantal 1.0F Topt=25C 2.8V (VR2) 90 Ripple Rejection RR(dB) VIN=3.8V+0.5Vp-p COUT=tantal 1.0F Topt=25C Ripple Rejection RR(dB) 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 14 R5322N 2.8V (VR1) 90 VIN=3.8V+0.5Vp-p COUT=tantal 2.2F Topt=25C 90 2.8V (VR2) VIN=3.8V+0.5Vp-p COUT=tantal 2.2F Topt=25C Ripple Rejection RR(dB) 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Ripple Rejection RR(dB) 80 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 4.0V (VR1) 90 VIN=5.0V+0.5Vp-p COUT=tantal 1.0F Topt=25C 90 4.0V (VR2) VIN=5.0V+0.5Vp-p COUT=tantal 1.0F Topt=25C Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 4.0V (VR1) 90 VIN=5.0V+0.5Vp-p COUT=tantal 2.2F Topt=25C 90 4.0V (VR2) VIN=5.0V+0.5Vp-p COUT=tantal 2.2F Topt=25C Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT=1mA IOUT=30mA IOUT=50mA 100 Frequency f(kHz) Frequency f(kHz) 15 R5322N 9) Ripple Rejection vs. Input Voltage (DC bias) 2.8V (VR1) 100 COUT=tantal 2.2F IOUT=1mA 100 2.8V (VR2) COUT=tantal 2.2F IOUT=1mA Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 60 40 20 0 2.9 80 60 40 20 0 2.9 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 Input Voltage VIN(V) Input Voltage VIN(V) 2.8V (VR1) 100 COUT=tantal 2.2F IOUT=30mA 100 2.8V (VR2) COUT=tantal 2.2F IOUT=30mA Ripple Rejection RR(dB) 80 60 40 20 0 2.9 Ripple Rejection RR(dB) 80 60 40 20 0 2.9 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 Input Voltage VIN(V) Input Voltage VIN(V) 2.8V (VR1) 100 COUT=tantal 2.2F IOUT=50mA 2.8V (VR2) 100 Ripple Rejection RR(dB) COUT=tantal 2.2F IOUT=50mA Ripple Rejection RR(dB) 80 60 40 20 0 2.9 80 60 40 20 0 2.9 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 f=1kHz f=10kHz f=100kHz 3.0 3.1 3.2 3.3 Input Voltage VIN(V) Input Voltage VIN(V) 16 R5322N 10) Input Transient Response R5322N001x (2.8V, VR1) x 2.84 IOUT=30mA COUT=tantal 1.0F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) 2.82 2.81 2.80 2.79 2.78 0 VOUT 10 20 30 40 50 Time t(s) 60 70 80 90 4.0 3.0 2.0 1.0 0.0 100 R5322N001x (2.8V, VR1) x 2.84 IOUT=30mA COUT=tantal 2.2F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) 2.82 2.81 2.80 2.79 2.78 0 VOUT 10 20 30 40 50 Time t(s) 60 70 80 90 4.0 3.0 2.0 1.0 0.0 100 R5322N001x (2.8V, VR1) x 2.84 IOUT=30mA COUT=tantal 6.8F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) 2.82 2.81 2.80 2.79 2.78 0 10 20 30 40 50 Time t(s) 60 70 80 90 VOUT 4.0 3.0 2.0 1.0 0.0 100 Input Voltage VIN(V) 2.83 VIN 5.0 Input Voltage VIN(V) 2.83 VIN 5.0 Input Voltage VIN(V) 2.83 VIN 5.0 17 R5322N R5322N001x (2.8V, VR2) x 2.84 IOUT=30mA COUT=tantal 1.0F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) VIN 2.82 2.81 VOUT 2.80 2.79 2.78 0 10 20 30 40 50 Time t(s) 60 70 80 90 2.0 1.0 0.0 100 4.0 3.0 R5322N001x (2.8V, VR2) x 2.84 IOUT=30mA COUT=tantal 2.2F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) VIN 2.82 2.81 VOUT 2.80 2.79 2.78 0 10 20 30 40 50 Time t(s) 60 70 80 90 2.0 1.0 0.0 100 4.0 3.0 R5322N001x (2.8V, VR2) x 2.84 IOUT=30mA COUT=tantal 6.8F tr/tf=5s Topt=25C 6.0 Output Voltage VOUT(V) VIN 2.82 2.81 VOUT 2.80 2.79 2.78 0 10 20 30 40 50 Time t(s) 60 70 80 90 2.0 1.0 0.0 100 4.0 3.0 18 Input Voltage VIN(V) 2.83 5.0 Input Voltage VIN(V) 2.83 5.0 Input Voltage VIN(V) 2.83 5.0 R5322N 11) Load Transient Response R5322N001x (VR1=2.8V) x IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 1.0F tr/tf=5s Topt=25C 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 VOUT1 150 IOUT1 VOUT2 0 2 4 6 8 Time t(s) 10 IOUT2=30mA 12 14 16 18 R5322N001x (VR1=2.8V) x IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 2.2F tr/tf=5s Topt=25C 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 VOUT1 150 IOUT1 VOUT2 0 2 4 6 8 Time t(s) 10 IOUT2=30mA 12 14 16 18 R5322N001x (VR1=2.8V) x 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 VOUT1 IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 6.8F tr/tf=5s Topt=25C IOUT1 150 VOUT2 0 2 4 6 8 Time t(s) 10 IOUT2=30mA 12 14 16 18 Output Current IOUT1(mA) Output Voltage VOUT(V) 100 50 0 Output Current IOUT1(mA) Output Voltage VOUT(V) 100 50 0 Output Current IOUT1(mA) Output Voltage VOUT(V) 100 50 0 19 R5322N R5322N001x (VR2=2.8V) x 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 0 2 4 6 8 Time t(s) 10 12 14 16 18 VOUT1 IOUT1=30mA IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 1.0F tr/tf=5s Topt=25C IOUT2 150 VOUT2 R5322N00x (VR2=2.8V) x 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 0 2 4 6 8 Time t(s) 10 12 14 16 18 VOUT1 IOUT1=30mA IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 2.2F tr/tf=5s Topt=25C IOUT2 150 VOUT2 R5322N00x (VR2=2.8V) x IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 6.8F tr/tf=5s Topt=25C 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.80 2.75 -2 0 2 4 6 8 Time t(s) 10 12 14 16 18 VOUT1 IOUT1=30mA 150 IOUT2 VOUT2 20 Output Current IOUT2(mA) Output Voltage VOUT(V) 100 50 0 Output Current IOUT2(mA) Output Voltage VOUT(V) 100 50 0 Output Current IOUT2(mA) Output Voltage VOUT(V) 100 50 0 R5322N TECHNICAL NOTES When using these ICs, consider the following points: In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be sure to use a 2.2F or more capacitance COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the range described as follows: The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions when the white noise level is under 40V (Avg.) are marked as the hatched area in the graph. (Note: When a ceramic capacitor is connected to the Output Pin as Output capacitor for phase compensation, the operation might be unstable unless as much as 1 resistor is connected between the capacitor and GND instead of ESR. Test these ICs with as same external components as ones to be used on the PCB.) 100 CIN=Ceramic 1.0F COUT=Ceramic 2.2F 100 R5322N001x (VR1=2.8V) x CIN=Ceramic 2.2F COUT=Ceramic 2.2F 10 10 ERS1() 1 ERS1() 0 20 40 60 80 100 120 1 0.1 0.1 0.01 0.01 0 20 40 60 80 100 120 Output Current IOUT1(mA) Output Current IOUT1(mA) 21 R5322N R5322N001x (VR2=2.8V) x 100 CIN=Ceramic 1.0F COUT=Ceramic 2.2F 100 R5322N001x (VR2=2.8V) x CIN=Ceramic 2.2F COUT=Ceramic 2.2F 10 10 ERS2() ERS2() 1 1 0.1 0.1 0.01 0 20 40 60 80 100 120 0.01 0 20 40 60 80 100 120 Output Current IOUT2(mA) Output Current IOUT2(mA) * Make VDD and GND line sufficient. When the impedance of these is high, the noise might be picked up or not work correctly. * Connect the capacitor with a capacitance of 1F or more between VDD and GND as close as possible. * Set external components, especially Output Capacitor, as close as possible to the ICs and make wiring shortest. 22 |
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