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| LOW DROPOUT VOLTAGE REGULATOR RN5RT SERIES APPLICATION MANUAL NO.EA-038-0006 LOW DROPOUT VOLTAGE REGULATOR RN5RT SERIES OUTLINE The RN5RT Series are voltage regulator ICs with high output voltage accuracy and low supply current developed through the use of a CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, output voltage setting resistors and a current limit circuit. The output voltage of these ICs is fixed with high accuracy. The built-in Driver Transistor of low ON Resistance permits developing of low dropout CMOS type regulator as RN5RT Series. Even if VOUT is shorted to GND, the current limit circuit protects the ICs from destruction. Furthermore, these ICs have a chip enable function, so that the supply current on standby can be minimized. Since the package for these ICs is the SOT-23-5 (Mini-mold) package, high density mounting of the ICs on boards is possible. FEATURES * Ultra-Low Supply Current ...........................................TYP. 4A (except ICEL) * Standby Mode ..............................................................TYP. 0.1A * Low Dropout Voltage ..................................................TYP. 0.3V (IOUT=60mA, RN5RT30A) * Low Temperature-Drift Coefficient of Output Voltage........TYP. 100ppm/C * Excellent Line Regulation ...........................................TYP. 0.15%/V * Output Voltage .............................................................Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible (refer to Selection Guide). ..................................2.0% * High Accuracy Output Voltage * Built-in Current Limit Circuits ...................................TYP. 30mA * Small Package ..............................................................SOT-23-5 (Mini-mold) APPLICATIONS * Power source for battery-powered equipment. * Power source for cellular phones, cameras, VCRs, camcorders, hand-held audio instruments and hand-held communication equipment. * Power source for domestic appliances. 1 RN5RT BLOCK DIAGRAM VDD 2 3 VOUT + - Vref Current Limit 1 5 CE GND SELECTION GUIDE The output voltage, the packing type, and the taping type for the ICs can be selected at the user's request. These selections can be made by designating the part number as shown below: RN5RTx xxx-x Part Number } a bc d Code a b Setting Output Voltage (VOUT) : Contents Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible. A Designation of Packing Type : c A : Taping C : Antistatic bag (for Samples only) Designation of Taping Type : Ex. TR, TL (refer to Taping Specifications ; TR type is the standard direction.) d 2 RN5RT PIN CONFIGURATION * SOT-23-5 5 4 (mark side) 1 2 3 PIN DESCRIPTION Pin No. Symbol Description 1 2 3 4 5 GND VDD VOUT NC CE Ground Pin Input Pin Output Pin No Connection Chip Enable Pin ABSOLUTE MAXIMUM RATINGS Symbol Item Ratings Unit VIN VCE VOUT IOUT PD Topt Tstg Tsolder Input Voltage Input Voltage (CE Pin) Output Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Lead Temperature (Soldering) 9 -0.3 to VIN +0.3 -0.3 to VIN +0.3 150 150 -40 to +85 -55 to +125 260C, 10s ABSOLUTE MAXIMUM RATINGS V V V mA mW C C Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits. 3 RN5RT ELECTRICAL CHARACTERISTICS * RN5RT30A Symbol Item Conditions MIN. TYP. MAX. Topt=25C Unit VOUT IOUT VOUT IOUT VDIF ISS Istandby VOUT VIN VIN VOUT Topt Ilim VCEH VCEL ICEH ICEL Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Input Voltage "H" CE Input Voltage "L" CE Input Current "H" CE Input Current "L" VIN=4.0V, IOUT=10mA VIN=4.0V VIN=4.0V 1mAIOUT60mA IOUT=60mA VIN=4.0V (except ICEL) VIN=VCE=4.0V IOUT=30mA VOUT+0.5VVIN8V 2.940 40 3.000 60 40 0.3 4.0 0.1 3.060 V mA 80 0.5 10 1.0 0.3 8 mV V A A %/V V ppm/C mA V 0 0.15 IOUT=10mA -40CTopt85C VOUT=0V 1.5 100 30 0.25 VCE=VIN VCE=0V -4.0 0 -2.0 0.1 -0.1 V A A 4 RN5RT * RN5RT40A Topt=25C Symbol Item Conditions MIN. TYP. MAX. Unit VOUT IOUT VOUT IOUT VDIF ISS Istandby VOUT VIN VIN VOUT Topt Ilim VCEH VCEL ICEH ICEL Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Input Voltage "H" CE Input Voltage "L" CE Input Current "H" CE Input Current "L" VIN=5.0V, IOUT=10mA VIN=5.0V VIN=5.0V 1mAIOUT80mA IOUT=80mA VIN=5.0V (expect ICEL) VIN=VCE=5.0V IOUT=30mA VOUT+0.5VVIN8V 3.920 50 4.000 80 40 0.3 4 0.1 0.15 4.080 V mA 80 0.5 10 1.0 0.3 8 mV V A A %/V V ppm/C mA V IOUT=10mA -40CTopt85C VOUT=0V 1.5 100 30 0.25 VCE=VIN VCE=0V -4.0 0 -2.0 0.1 -0.1 V A A 5 RN5RT * RN5RT50A Topt=25C Symbol Item Conditions MIN. TYP. MAX. Unit VOUT IOUT VOUT IOUT VDIF ISS Istandby VOUT VIN VIN VOUT Topt Ilim VCEH VCEL ICEH ICEL Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Input Voltage "H" CE Input Voltage "L" CE Input Current "H" CE Input Current "L" VIN=6.0V, IOUT=10mA VIN=6.0V VIN=6.0V 1mAIOUT100mA IOUT=100mA VIN=6.0V (except ICEL) VIN=VCE=6.0V IOUT=30mA VOUT+0.5VVIN8V 4.900 65 5.000 100 40 0.3 4 0.1 0.15 5.100 V mA 80 0.5 10 1.0 0.3 8 mV V A A %/V V ppm/C mA V IOUT=10mA -40CTopt85C VOUT=0V 1.5 100 30 0.25 VCE=VIN VCE=0V -4.0 0 -2.0 0.1 -0.1 V A A 6 RN5RT 7 RN5RT ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE Output Voltage Part Number Conditions VOUT (V) MIN. TYP. Output Current IOUT (mA) Load Regulation VOUT/IOUT (mA) Dropout Voltage VDIF (V) Supply Current ISS (A) MAX. Conditions MIN. TYP. Conditions TYP. MAX. Conditions TYP. MAX Conditions TYP. MAX. RN5RT20A RN5RT21A RN5RT22A RN5RT23A RN5RT24A RN5RT25A RN5RT26A RN5RT27A RN5RT28A RN5RT29A RN5RT30A RN5RT31A RN5RT32A RN5RT33A RN5RT34A RN5RT35A RN5RT36A RN5RT37A RN5RT38A RN5RT39A RN5RT40A RN5RT41A RN5RT42A RN5RT43A RN5RT44A RN5RT45A RN5RT46A RN5RT47A RN5RT48A RN5RT49A RN5RT50A RN5RT51A RN5RT52A RN5RT53A RN5RT54A RN5RT55A RN5RT56A RN5RT57A RN5RT58A RN5RT59A RN5RT60A IOUT =10mA VIN-VOUT =1.0V 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 4.900 4.998 5.096 5.194 5.292 5.390 5.488 5.586 5.684 5.782 5.880 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 5.100 5.200 5.300 5.400 5.500 5.600 5.700 5.800 5.900 6.000 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 VTN-VOUT 4.080 =1.0V 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 5.100 5.202 5.304 5.406 5.508 5.610 5.712 5.814 5.916 6.018 6.120 65 100 1mA IOUT 100mA VIN-VOUT =1.0V IOUT =100mA 50 80 1mA IOUT 80mA VIN-VOUT =1.0V IOUT =80mA 40 80 0.3 0.5 40 60 1mA IOUT 60mA VIN-VOUT =1.0V VIN-VOUT =1.0V IOUT =60mA 25 40 1mA IOUT 40mA VIN-VOUT =1.0V IOUT =40mA () ICEL expect 4.0 10 8 RN5RT Topt=25C Supply Current (Standby) Istandby (A) Line Regulation CE Input Voltage Input Output Voltage Short Voltage Temperature Coefficient Current Limit "H" "L" Ilim (mA) VCEH (V) VCEL (V) CE Input Current "H" ICEH (A) "L" ICEL (A) VOUT/VIN (%/V) VIN (V) VOUT/T (ppm/C) Conditions TYP. MAX. Conditions TYP. MAX. MAX. Conditions TYP. Conditions TYP. MIN. MAX. Conditions TYP. MAX. Conditions MIN. TYP. MAX. IOUT= 30mA VIN-VOUT =1.0V 0.1 1.0 VOUT+ 0.5V VIN 8V 0.15 0.3 8 IOUT= 10mA -40C 100 Topt 85C VOUT =0V 30 1.5 0.25 VCE= VIN 0 0.1 VCE= 0V -4.0 -2.0 -0.1 9 RN5RT OPERATION VDD 2 R1 3 VOUT + - Vref Current Limit R2 1 5 CE GND In these ICs, Output Voltage VOUT is detected by Feed-back Registers R1, R2, and the detected Output Voltage is compared with a reference voltage by Error Amplifier, so that a constant voltage is output. A current limit circuit working for Short Protect and a chip enable circuit for standby function are included. TEST CIRCUITS IOUT 2 VDD VOUT 3 ISS A 2 VDD VOUT 3 C1 5 VIN C1 5 CE GND 1 C2 C1, C2=1F CE GND 1 C1=1F Fig.1 Standard Test Circuit Fig.2 Supply Current Test Circuit IOUT 2 VDD VOUT 3 VIN P.G. 5 CE GND 1 C1 C1=1F Fig.3 Line Transient Response Test Circuit 10 RN5RT TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current RN5RT30A 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 400 VIN=3.3V VIN=8.0V VIN=5.0V Topt=25C 4.5 4.0 RN5RT40A Topt=25C VIN=5.0V Output Voltage VOUT(V) Output Voltage VOUT(V) VIN=4.0V 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 VIN=8.0V VIN=6.0V VIN=4.3V 100 200 300 400 500 Output Current IOUT(mA) Output Current IOUT(mA) RN5RT50A 6.0 Topt=25C Output Voltage VOUT(V) 5.0 4.0 3.0 2.0 1.0 0.0 0 100 200 300 400 VIN=7.0V VIN=8.0V VIN=6.0V VIN=5.3V 500 600 Output Current IOUT(mA) 2) Output Voltage vs. Input Voltage RN5RT30A 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 IOUT=1mA IOUT=10mA IOUT=60mA Topt=25C 3.05 3.04 RN5RT30A Topt=25C Output Voltage VOUT(V) Output Voltage VOUT(V) 3.03 3.02 3.01 3.00 2.99 2.98 2.97 2.96 2.95 3.0 4.0 5.0 6.0 IOUT=10A IOUT=1mA IOUT=10mA 7.0 8.0 Input Voltage VIN(V) Input Voltage VIN(V) 11 RN5RT RN5RT40A 4.2 4.0 Topt=25C 4.05 4.04 RN5RT40A Topt=25C Output Voltage VOUT(V) Output Voltage VOUT(V) 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.0 3.0 4.0 5.0 6.0 7.0 8.0 IOUT=1mA IOUT=10mA IOUT=80mA 4.03 4.02 4.01 4.00 3.99 3.98 3.97 3.96 3.95 4.0 5.0 6.0 IOUT=10A IOUT=1mA IOUT=10mA 7.0 8.0 Input Voltage VIN(V) Input Voltage VIN(V) Topt=25C 5.05 5.04 RN5RT50A 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.0 4.0 5.0 6.0 RN5RT50A Topt=25C Output Voltage VOUT(V) Output Voltage VOUT(V) 5.03 5.02 5.01 5.00 4.99 4.98 4.97 4.96 4.95 5.0 IOUT=10A IOUT=1mA IOUT=10mA IOUT=1mA IOUT=10mA IOUT=100mA 7.0 8.0 6.0 7.0 8.0 Input Voltage VIN(V) Input Voltage VIN(V) 3) Dropout Voltage vs. Output Current RN5RT30A 0.5 0.5 RN5RT40A Dropout Voltage VDIF(V) 0.4 Topt=85C 25C 0.3 -40C 0.2 0.1 0.0 0 10 20 30 40 50 60 70 80 Dropout Voltage VDIF(V) 0.4 Topt=85C 0.3 -40C 0.2 0.1 0.0 0 20 40 60 80 100 25C Output Current IOUT(mA) Output Current IOUT(mA) 12 RN5RT RN5RT50A 0.5 Dropout Voltage VDIF(V) 0.4 Topt=85C 0.3 -40C 0.2 0.1 0.0 0 20 40 60 80 100 120 25C Output Current IOUT(mA) 4) Output Voltage vs. Temperature RN5RT30A 3.1 VIN=4V IOUT=10mA RN5RT40A 4.1 VIN=5V IOUT=10mA Output Voltage VOUT(V) Output Voltage VOUT(V) 3.0 4.0 2.9 -50 -25 0 25 50 75 100 3.9 -50 -25 0 25 50 75 100 Temperature Topt(C) Temperature Topt(C) RN5RT50A 5.1 VIN=6V IOUT=10mA Output Voltage VOUT(V) 5.0 4.9 -50 -25 0 25 50 75 100 Temperature Topt(C) 13 RN5RT 5) Supply Current vs. Input Voltage RN5RT30A 5.0 Topt=25C 5.0 RN5RT40A Topt=25C Supply Current ISS(A) 4.0 3.5 3.0 2.5 2.0 3.0 Supply Current ISS(A) 4.0 5.0 6.0 7.0 8.0 4.5 4.5 4.0 3.5 3.0 2.5 2.0 4.0 5.0 6.0 7.0 8.0 Input Voltage VIN(V) Input Voltage VIN(V) Topt=25C RN5RT50A 5.0 Supply Current ISS(A) 4.5 4.0 3.5 3.0 2.5 2.0 5.0 6.0 7.0 8.0 Input Voltage VIN(V) 6) Supply Current vs. Temperature RN5RT30A 4.0 VIN=8V 4.0 RN5RT40A VIN=8V Supply Current ISS(A) Supply Current ISS(A) 3.8 3.6 3.4 3.2 3.0 -50 3.8 3.6 3.4 3.2 3.0 -50 -25 0 25 50 75 100 -25 0 25 50 75 100 Temperature Topt(C) Temperature Topt(C) 14 RN5RT RN5RT50A 4.0 VIN=8V Supply Current ISS(A) 3.8 3.6 3.4 3.2 3.0 -50 -25 0 25 50 75 100 Temperature Topt(C) 7) Dropout Voltage vs. Set Output Voltage RN5RT Series 0.40 0.35 0.30 0.25 IOUT=50mA 0.20 0.15 0.10 0.05 0.00 0 1 2 3 4 5 6 IOUT=10mA IOUT=1mA Topt=25C Dropout Voltage VDIF(V) Set Output Voltage Vreg(V) 8) Line Transient Response Topt=25C Topt=25C RN5RT30A COUT=1F 6.0 IOUT=1mA 6.0 5.5 5.0 4.5 Input Voltage 4.0 3.5 Output Voltage 3.0 2.5 0.0 0.4 0.8 1.2 1.6 2.0 5.5 5.0 4.5 RN5RT30A COUT=1F IOUT=30mA Input Voltage VIN/ Output Voltage VOUT (V) Input Voltage VIN/ Output Voltage VOUT (V) Input Voltage 4.0 3.5 Output Voltage 3.0 2.5 0 0.4 0.8 1.2 1.6 2 Time t (ms) Time t (ms) 15 RN5RT TYPICAL APPLICATION IOUT 2 VDD VOUT 3 VIN C1 5 CE GND 1 C2 In the RN5RT Series, a constant voltage can be obtained without using Capacitor C1 and C2. However, when the wire connected to VIN is long, use Capacitor C1. Transient noise of output voltage occurred due to load deviation can be reduced by using Capacitor C2. Insert Capacitors C1 and C2 with the capacitance of 0.1F to 2.0F between Input/Output Pins and GND Pin with minimum wiring. 16 |
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