VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT Rx5RE SERIES APPLICATION MANUAL NO.EA-016-0006 VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT R x 5RE SERIES OUTLINE The R x 5RE Series are voltage regulator ICs with high output voltage accuracy and ultra-low quiescent current by CMOS process. Each of these ICs consists of a voltage reference unit, an error amplifier, a driver transistor, and resistors for setting output voltage, and a current limit circuit. By use of these ICs, a constant voltage power supply circuit with high efficiency can be constructed because the dropout voltage and quiescent current of these ICs are very small. Furthermore, theses ICs have a built-in current limit circuit. The output voltage of these ICs is fixed with high accuracy. Two types of packages, TO-92 and SOT-89 (Mini-power Mold) are available. FEATURES * Ultra-low Quiescent Current ...........................TYP. 1.1A (R x 5RE30A,VIN=5.0V) * Ultra-low Dropout Voltage ...............................TYP. 0.5V (R x 5RE50A,IOUT=60mA) * Large Output Current ......................................TYP. 120mA (R x 5RE50A) * Low Temperature-Drift Coefficient of Output Voltage ...........................TYP. 100ppm/C * Broad Operating Voltage Range ......................MAX. 10.0V * Excellent Line Regulation ................................TYP. 0.1%/V * High Accuracy Output Voltage ........................2.5% * 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) .................................. * Two Types of Packages TO-92, SOT-89 (Mini-power Mold) APPLICATIONS * Power source for battery-powered equipment. * Power source for cameras, video instruments such as camcorders, VCRs, and hand- held communication equipment. * Precision voltage references. BLOCK DIAGRAM VIN VOUT 2 3 + - Vref 1 GND 1 R x 5RE SELECTION GUIDE The package type, the output voltage, the packing type, and the taping type of R x 5RE Series can be designated at the user's request by specifying the part number as follows. a b cd } } R x 5RE xxxx -xx Part Number e Code Contents a Designation of Package Type: E: TO-92 H: SOT-89 (Mini-power Mold) b Setting Output Voltage (VOUT): Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible. c A d Designation of Packing Type: A: Taping C: Antistatic bag for TO-92 and samples e Designation of Taping Type: Ex. TO-92 : RF, RR, TZ SOT-89: T1, T2 (refer to Taping Specifications) "TZ" and "T1" are prescribed as a standard. For example, the product with Package Type SOT-89,Output Voltage 5.0V,Version A and Taping Type T1 are designated by Part Number RH5RE50AA-T1. 2 R x 5RE PIN CONFIGURATION * TO-92 * SOT-89 (mark side) (mark side) 1 1 2 2 3 3 PIN DESCRIPTION * TO-92 * SOT-89 Pin No. Symbol Pin No. Symbol 1 GND 1 GND 2 VIN 2 VIN 3 VOUT 3 VOUT 3 R x 5RE ABSOLUTE MAXIMUM RATINGS Symbol VIN Item Input Voltage Rating Unit +12 V VOUT Output Voltage -0.3 to VIN+0.3 V IOUT Output Current 300 mA Power Dissipation 300 mW PD Topt Operating Temperature -40 to +85 C Tstg Storage Temperature -55 to +25 C Lead Temperature (Soldering) 260C, 10s Tsolder ABSOLUTE MAXIMUM RATINGS 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. 4 R x 5RE ELECTRICAL CHARACTERISTICS Topt=25C Symbol Item Conditions MIN. TYP. MAX. Unit 2.050 V VOUT Output Voltage VIN=4.0V,IOUT=10mA 1.950 2.000 IOUT Output Current VIN=4.0V 40 60 VOUT IOUT VDIF ISS VOUT Load Regulation Dropout Voltage Quiescent Current VIN Line Regulation VIN Input Voltage Ilim Current Limit VOUT Topt Output Voltage Temperature Coefficient VIN=4.0V mA 1mAIOUT50mA 40 80 mV IOUT=30mA 0.5 0.7 V VIN=4.0V 1.0 3.0 A IOUT=10mA 0.1 VOUT+1.0VVIN10V %/V 10 IOUT=10mA -40CTopt85C 240 mA 100 ppm/C * R x 5RE30A Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit 3.075 V VOUT Output Voltage VIN=5.0V,IOUT=10mA 2.925 3.000 IOUT Output Current VIN=5.0V 50 80 VOUT IOUT VDIF ISS VOUT Load Regulation Dropout Voltage Quiescent Current VIN Line Regulation VIN Input Voltage Ilim Current Limit VOUT Topt V Output Voltage Temperature Coefficient VIN=5.0V mA 1mAIOUT60mA 40 80 mV IOUT=40mA 0.5 0.7 V VIN=5.0V 1.1 3.3 A IOUT=10mA VOUT+1.0VVIN10V 0.1 %/V 10 IOUT=10mA -40CTopt85C V 240 mA 100 ppm/C 5 R x 5RE * R x 5RE40A Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit 4.100 V VOUT Output Voltage VIN=6.0V,IOUT=10mA 3.900 4.000 IOUT Output Current VIN=6.0V 65 100 VOUT IOUT VDIF ISS VOUT Load Regulation Dropout Voltage Quiescent Current VIN Line Regulation VIN Input Voltage Ilim Current Limit VOUT Topt Output Voltage Temperature Coefficient VIN=6.0V mA 1mAIOUT70mA 40 80 mV IOUT=50mA 0.5 0.7 V VIN=6.0V 1.2 3.6 A IOUT=10mA 0.1 VOUT+1.0VVIN10V %/V 10 IOUT=10mA -40CTopt85C 240 mA 100 ppm/C * R x 5RE50A Symbol Item Conditions MIN. TYP. MAX. Unit 5.125 V Output Voltage VIN=7.0V,IOUT=10mA 4.875 5.000 IOUT Output Current VIN=7.0V 80 120 IOUT VDIF ISS VOUT Load Regulation Dropout Voltage Quiescent Current VIN Line Regulation VIN Input Voltage Ilim Current Limit VOUT Topt 6 Topt=25C VOUT VOUT V Output Voltage Temperature Coefficient VIN=7.0V mA 1mAIOUT80mA 40 80 mV IOUT=60mA 0.5 0.7 V VIN=7.0V 1.3 3.9 A IOUT=10mA VOUT+1.0VVIN10V 0.1 %/V 10 IOUT=10mA -40CTopt85C V 240 mA 100 ppm/C R x 5RE * R x 5RE60A Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit 6.150 V VOUT Output Voltage VIN=8.0V,IOUT=10mA 5.850 6.000 IOUT Output Current VIN=8.0V 80 120 VOUT IOUT VDIF ISS VOUT Load Regulation Dropout Voltage Quiescent Current VIN Line Regulation VIN Input Voltage Ilim Current Limit VOUT Topt Output Voltage Temperature Coefficient VIN=8.0V mA 1mAIOUT80mA 40 80 mV IOUT=60mA 0.5 0.7 V VIN=8.0V 1.4 4.2 A IOUT=10mA VOUT+1.0VVIN10V 0.1 %/V 10 IOUT=10mA -40CTopt85C V 240 mA 100 ppm/C 7 R x 5RE ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE Output Voltage VOUT(V) Part Number Conditions R x 5RE20A R x 5RE21A R x 5RE22A R x 5RE23A R x 5RE24A R x 5RE25A R x 5RE26A R x 5RE27A R x 5RE28A R x 5RE29A R x 5RE30A R x 5RE31A R x 5RE32A R x 5RE33A R x 5RE34A R x 5RE35A R x 5RE36A R x 5RE37A R x 5RE38A R x 5RE39A R x 5RE40A R x 5RE41A R x 5RE42A R x 5RE43A R x 5RE44A R x 5RE45A R x 5RE46A R x 5RE47A R x 5RE48A R x 5RE49A R x 5RE50A R x 5RE51A R x 5RE52A R x 5RE53A R x 5RE54A R x 5RE55A R x 5RE56A R x 5RE57A R x 5RE58A R x 5RE59A R x 5RE60A 8 OutputCurrent MIN. 1.950 2.048 2.145 2.243 2.340 2.438 2.535 2.633 2.730 2.828 2.925 3.023 3.120 3.218 3.315 3.413 VIN- 3.510 VOUT 3.608 =2.0V 3.705 3.803 3.900 3.998 IOUT 4.095 =10mA 4.193 4.290 4.388 4.485 4.583 4.680 4.778 4.875 4.973 5.070 5.168 5.265 5.363 5.460 5.558 5.655 5.753 5.850 IOUT(mA) TYP. MAX. 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 2.050 2.152 2.255 2.357 2.460 2.562 2.665 2.767 2.870 2.972 3.075 3.177 3.280 3.382 3.485 3.587 3.690 3.792 3.895 3.997 4.100 4.202 4.305 4.407 4.510 4.612 4.715 4.817 4.920 5.022 5.125 5.227 5.330 5.432 5.535 5.637 5.740 5.842 5.945 6.047 6.150 Conditions MIN. TYP. Load Regulation Dropout Voltage VOUT/IOUT(mV) VDIF(V) Conditions TYP. MAX. Conditions TYP. MAX. 0.5 0.7 VIN- VOUT =2.0V 40 60 1mA IOUT 50mA IOUT =30mA VIN- VOUT =2.0V 1mA IOUT 60mA 50 IOUT 80 =40mA VIN- VIN- VOUT VOUT =2.0V =2.0V 40 80 1mA IOUT 70mA 65 IOUT 100 =50mA VIN- VOUT =2.0V 80 120 1mA IOUT IOUT =60mA 80mA R x 5RE Topt=25C Quiescent Current VOUT/VI N(%/V) VI N(V) Ilim(mA) VOUT/T(ppm/C) Iss(A) Conditions Line Regulation Input Voltage Current Limit Output Voltage Tempco. TYP. MAX. 1.0 3.0 1.1 3.3 Conditions TYP. MAX. TYP. Conditions TYP. IOUT =10mA VIN- VOUT IOUT =10mA 1.2 3.6 =2.0V 0.1 VOUT+ 10 240 100 -40C 1.0V Topt VIN 85C 10V 1.3 3.9 1.4 4.2 9 R x 5RE OPERATION Output Voltage VOUT divided at the node between VOUT VIN Registers R1 and R2 is compared with Reference Voltage by Error Amplifier, so that a constant voltage is output. Error Amplifire - R1 + Vref R2 GND GND FIG. 1 Brock Diagram TEST CIRCUITS VIN VIN CI 1F + Rx5RE SERIES VOUT ISS IOUT VOUT P.G Rx5RE SERIES VOUT GND VOUT + Ro Co 0.1F FIG. 4 Line Transient Response Test Circuit 10 Rx5RE SERIES VOUT GND FIG. 3 Quiescent Current Test Circuit FIG. 2 Test Circuit VIN VIN CI + 1F + Co 1F GND VIN R x 5RE TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current R x 5RE30A 3.1 R x 5RE40A VIN=5.0V VIN=6.0V 4.1 Output Voltage VOUT(V) Output Voltage VOUT(V) Topt= -40C 3.0 25C 2.9 85C 2.8 Topt=-40C 4.0 25C 3.9 3.8 85C 2.7 3.7 0 50 100 150 200 Output Current IOUT(mA) R x 5RE50A 5.1 250 0 150 50 100 Output Current IOUT(mA) R x 5RE50A VIN=7.0V 200 VIN=7.0V 5.1 5.0 25C 4.9 85C 4.8 Output Voltage VOUT(V) Output Voltage VOUT(V) Topt=-40C 5.0 with heatsink 4.9 without heatsink 4.8 heatsink 30x30x1mm 4.7 4.7 0 50 100 150 200 250 300 350 Output Current IOUT(mA) 0 50 100 150 200 Output Current IOUT(mA) 250 2) Output Voltage vs. Input Voltage IOUT=1A 2.0 1.8 1.6 10mA 1.4 1.2 1.0 0.8 1.0 1mA Topt=25C 2.04 Output Voltage VOUT(V) Output Voltage VOUT(V) 2.2 R x 5RE20A Topt=25C 2.4 2.02 IOUT=1A 2.00 1mA 10mA 1.98 1.96 2.0 3.0 4.0 Input Voltage VIN(V) 5.0 2 3 4 5 6 Input Voltage VIN(V) 7 11 R x 5RE R x 5RE30A 3.4 R x 5RE30A Topt=25C Topt=25C 3.00 IOUT=1mA 2.8 2.6 50mA 2.4 2.2 10mA 2.0 1.8 2.0 2.5 3.0 3.5 4.0 Input Voltage VIN(V) R x 5RE40A 4.2 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.0 2.99 IOUT=1A 2.98 1mA 2.97 10mA 2.96 2.95 3.0 4.5 4.0 5.0 6.0 7.0 Input Voltage VIN(V) R x 5RE40A Topt=25C 8.0 Topt=25C 4.06 4.0 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.2 IOUT=1mA 3.8 3.6 50mA 3.4 4.04 4.02 IOUT=1A 4.00 1mA 10mA 3.98 10mA 3.96 3.5 4.5 5.5 Input Voltage VIN(V) R x 5RE50A Output Voltage VOUT(V) 5.1 5.0 4.8 4.6 IOUT=1mA 10mA 50mA 5 6 7 8 Input Voltage VIN(V) R x 5RE50A Topt=25C 4.4 4.2 4.0 12 4 5.05 5.04 Output Voltage VOUT(V) 3.2 2.5 9 Topt=25C 5.03 5.02 5.01 IOUT=1A 5.00 4.99 4.98 1mA 10mA 4.97 4.96 4.95 4.5 5.0 5.5 6.0 Input Voltage VIN(V) 6.5 5 6 7 8 9 Input Voltage VIN(V) 10 R x 5RE 3) Dropout Voltage vs. Output Curret R x 5RE30A R x 5RE40A 1.0 1.2 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 1.4 85C 1.0 0.8 25C 0.6 0.4 0.2 0.8 85C 0.6 25C 0.4 0.2 Topt=-40C Topt=-40C 0.0 0.0 0 20 40 60 80 Output Current IOUT(mA) 0 100 20 40 60 80 Output Current IOUT(mA) 100 R x 5RE50A 0.8 Dropout Voltage VDIF(V) 0.7 0.6 85C 0.5 25C 0.4 0.3 0.2 Topt= -40C 0.1 0.0 0 20 40 60 80 Output Current IOUT(mA) 100 4) Output Voltage vs.Temperature Output Voltage VOUT(V) 3.1 R x 5RE40A IOUT=10mA 3.0 2.9 -50 -30 -10 10 30 50 70 Temperature Topt(C) 4.1 Output Voltage VOUT(V) R x 5RE30A 90 IOUT=10mA 4.0 3.9 -50 -30 -10 10 30 50 70 Temperature Topt(C) 90 13 R x 5RE R x 5RE50A Output Voltage VOUT(V) 5.2 IOUT=10mA 5.1 5.0 4.9 4.8 -50 -30 -10 10 30 50 70 Temperature Topt(C) 90 5) Quiescent Current vs. Input Voltage R x 5RE20A R x 5RE30A Topt=25C 1.4 Quiescent Current Iss(A) Quiescent Current Iss(A) 1.1 1.0 0.9 0.8 0.7 Topt=25C 1.3 1.2 1.1 1.0 0.6 3 4 5 6 7 8 Input Voltage VIN(V) R x 5RE40A 1.5 9 10 2 3 4 5 6 7 8 Input Voltage VIN(V) R x 5RE50A Topt=25C 1.5 9 10 Topt=25C Quiescent Current Iss(A) Quiescent Current Iss(A) 1.4 1.4 1.3 1.2 1.1 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 1.0 14 4 5 6 7 8 9 10 Input Voltage VIN(V) 11 0.5 5 6 7 8 9 10 11 Input Voltage VIN(V) 12 R x 5RE 6) Quiescent Current vs. Temperature R x 5RE20A 1.6 Quiescent Current Iss(A) Quiescent Current Iss(A) 1.5 1.3 1.1 0.9 0.7 0.5 -40 -20 R x 5RE40A 1.2 1.0 0 20 40 60 80 100 Temperature Topt(C) R x 5RE50A VIN=6.0V VIN=5.0V 1.4 0.8 -40 -20 0 20 40 60 80 100 Temperature Topt(C) 1.7 1.5 VIN=7.0V 1.4 1.5 Quiescent Current Iss(A) Quiescent Current Iss(A) R x 5RE30A VIN=4.0V 1.7 1.3 1.1 0.9 0.7 0.5 -40 -20 0 20 40 60 80 100 Temperature Topt(C) 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 -20 0 20 40 60 80 100 Temperature Topt(C) 7) Dropout Voltage vs. Set Output Voltage R x 5RE SERIES Topt=25C Dropout Voltage VDIF(V) 0.7 0.6 0.5 IOUT=50mA 0.4 0.3 0.2 10mA 0.1 1mA 0.0 0 1 2 3 4 5 Set Output Voltage Vreg(V) 6 15 R x 5RE 4.5 Input Voltage 3.5 3.0 2.5 Output Voltage 2.0 1.5 2.0 2.5 3.0 3.5 Time t(ms) R x 5RE40A 8.0 Input Voltage/Output Voltage V(V) Input Voltage/Output Voltage V(V) 4.5 1.0 1.5 4.0 6.0 5.0 Output Voltage 4.0 3.0 2.0 2.5 3.0 3.5 Time t(ms) 4.0 6.0 5.0 Input Voltage 4.0 Output Voltage 3.0 2.0 2.0 2.5 3.0 3.5 Time t(ms) R x 5RE50A IOUT=1mA Input Voltage IOUT=1mA 7.0 1.0 1.5 4.5 7.0 2.0 1.5 R x 5RE30A IOUT=1mA 5.0 4.5 8.0 7.0 Input Voltage 6.0 Output Voltage 5.0 4.0 3.0 0 4.5 4.0 IOUT=1mA 9.0 Input Voltage/Output Voltage V(V) Input Voltage/Output Voltage V(V) 8) Line Transient Response (1) R x 5RE20A 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Time t(ms) 9) Line Transient Response (2) 4.5 4.0 3.5 3.0 Output Voltage 2.0 1.5 1.0 0.5 0.0 1.5 16 Input Voltage 2.5 2.0 R x 5RE30A IOUT=30mA Input Voltage/Output Voltage V(V) Input Voltage/Output Voltage V(V) R x 5RE20A 5.0 2.5 3.0 3.5 Time t(ms) 4.0 4.5 7.0 IOUT=30mA 6.0 5.0 Input Voltage 4.0 Output Voltage 3.0 2.0 1.0 1.5 2.0 2.5 3.0 3.5 Time t(ms) 4.0 4.5 R x 5RE IOUT=30mA 7.0 Input Voltage 6.0 5.0 Output Voltage 4.0 3.0 2.0 1.5 2.0 2.5 3.0 3.5 Time t(ms) 9.0 Input Voltage/Output Voltage V(V) Input Voltage/Output Voltage V(V) R x 5RE40A 8.0 4.0 4.5 R x 5RE50A IOUT=30mA 8.0 7.0 Input Voltage 6.0 Output Voltage 5.0 4.0 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Time t(ms) 17 R x 5RE TYPICAL APPLICATION In R x 5RE Series, a constant voltage can be obtained VIN VIN C1 + Rx5RE SERIES without using Capacitors C1 and C2. However, when the VOUT + VOUT wire connected to VIN is long, use Capacitor C1. Output noise can be reduced by using Capacitor C2. C2 GND Insert Capacitors C1 and C2 with the capacitance of 0.1F to 2.0F between Input/Output Pins and GND Pin GND GND with minimum wiring. APPLICATION CIRCUITS * VOLTAGE BOOST CIRCUIT The output voltage can be obtained by the following formula : VIN VIN Rx5RE SERIES VOUT VOUT + GND C1 Since the quiescent current of R x 5RE Series is so C2 R1 small that the resistances of R1 and R2 can be set as ISS + 1 VOUT=Vreg* * (1+R2/R1) + ISS * R2 large as several hundreds k and therefore the sup- GND ply current of "Voltage Boost Circuit" itself can be R2 reduced. Furthermore, since R x 5RE Series are operated by a constant voltage, the supply current of "Voltage Boost Circuit" is not substantially affected by the input voltage. *1) Vreg : Set Output Voltage of Rx5RE Series. * DUAL POWER SUPPLY CIRCUIT As shown in the circuit diagram, a dual power supply circuit can be constructed by using two R x 5RE IC1 VIN VIN Rx5RE20A VOUT C1 VOUT1 5V + This circuit diagram shows a dual power supply D ISS GND circuit with an output of 3V and an output of 5V. IC2 VIN C2 Rx5RE30A + VOUT C3 VOUT2 3V + R 18 When the minimum output current of IC2 is larger than ISS of IC1, Resistor R is unnecessary. Diode D is a protection diode for the case where VOUT2 GND GND Series. GND becomes larger than VOUT1. R x 5RE * CURRENT BOOST CIRCUIT Output current of 120mA or more can be obtained Tr.1 by the current boost circuit constructed as shown in this circuit diagram. Rx5RE SERIES VIN VIN C1 VOUT VOUT + + GND C2 GND GND * CURRENT BOOST CIRCUIT WITH OVERCURRENT LIMIT CIRCUIT A circuit for protecting Tr.1 from the destruction caused by output short-circuit or overcurrent is shown in Tr.1 R2 this circuit diagram. Vbe2 When the voltage reduction caused by the current ( aa Tr.2 IOUT Rx5RE SERIES VIN VIN + R1 VOUT + GND VOUT C2 IOUT) which flows through R2 reaches Vbe2 of Tr.2 by additionally providing the current boost circuit with Tr.2 and R2, Tr.2 is turned ON and the base current of Tr.1 is increased, so that the output current is limited. GND GND Current limit of Overcurrent Limit Circuit is obtained as follows : IOUT Vbe2/R2 * CURRENT SOURCE A current source with the structure as shown in VIN VIN C1 + Rx5RE SERIES GND IOUT VOUT R ISS this circuit diagram can be used. Output Current IOUT is obtained as follows : 1 IOUT=Vreg* /R + ISS Take care that Output Current IOUT does not exceed its allowable current. *1) Vreg : Set Output Voltage of Rx5RE Series. 19