RN5RF SERIES LOW RIPPLE VOLTAGE REGULATOR WITH EXTERNAL TRANSISTOR NO. EA-043-111116 OUTLINE The RN5RF Series are CMOS-based voltage regulator ICs which control external driver transistors with high ripple rejection, high accuracy output voltage, low supply current. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, output voltage setting resistor, short circuit current limiting circuit and chip enable circuit. These ICs are suitable for constructing regulators with ultra low dropout voltage and an output current in the range of several tens of mA and several hundreds mA. In addition to low supply current by CMOS process, chip enable function can be used to conserve battery life during standby. Furthermore, a supreme ripple rejection and a transient response are suitable for portable communicator such as cell phones, PDAs, walky talkies. SOT23-5 (Mini Mold) package is available. FEATURES * * * * * * * * Supply Current ............................................................. Typ. 30A Supply Current (Standby) ........................................... Typ. 0.1A Output Voltage Accuracy..............................................2% Ripple Rejection........................................................... Typ. 60dB (f=1kHz) Dropout Voltage ........................................................... Typ. 0.1V (IOUT=100mA, dependent on External Tr.) Temperature-Drift Coefficient of Output Voltage .......... Typ. 100ppm/C Line Regulation ............................................................ Typ. 0.05%/V Output Voltage Range.................................................. 1.2V to 6.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.) * Package ....................................................................... SOT-23-5 * Current Limit for external Tr. ........................................ Current limit Typ. 8mA APPLICATIONS * Power source for battery-powered equipment * Power source for hand-held communication equipment, cameras, and VCRs * Power source for home appliances 1 RN5RF BLOCK DIAGRAMS RN5RFxxA RN5RFxxB 4 EXT VDD 2 4 3 VOUT VDD 2 3 - - + + Vref EXT VOUT Vref Current Limit CE 5 Current Limit 1 GND CE 5 1 GND SELECTION GUIDE The output voltage and CE pin polarity for the ICs can be selected at the user's request. Product Name Package Quantity per Reel Pb Free Halogen Free RN5RFxxA-TR-FE SOT-23-5 3,000 pcs Yes Yes xx : The output voltage can be designated in the range from 1.2V (12) to 6.0V (60) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) : CE pin polarity are options as follows (A) "L" active (B) "H" active 2 RN5RF PIN CONFIGURATION z SOT-23-5 5 4 (mark side) 1 2 3 PIN DESCRIPTION * SOT-23-5 Pin No Symbol Pin Description 1 GND 2 VDD Input Pin 3 VOUT Output Pin 4 EXT External Transistor Drive Pin (CMOS Output) 5 CE or CE Ground Pin Chip Enable Pin 3 RN5RF ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit 12.0 V VIN Input Voltage VCE Input Voltage ( CE or CE) -0.3 to VIN+0.3 V VEXT EXT Output Voltage -0.3 to VIN+0.3 V IEXT EXT Output Current 50 mA 420 mW PD Power Dissipation (SOT-23-5) Topt Operating Temperature Range -40 to 85 C Tstg Storage Temperature Range -55 to 125 C ) For Power Dissipation, please refer to PACKAGE INFORMATION. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 4 RN5RF ELECTRICAL CHARACTERISTICS * RN5RFxxA ;+= Symbol Item Conditions ' ;1&' x1#J> x3#1+ 55;3#15 $G 5;F#15!5 ;+#15 0 5 ) 5 " 55;3#15 3&'311&' 3#1 > 81 Unit 5 ' 3 &' 81 &5 ;311&'!;1&' 1#3 1#+ 5 " 55;3#15 ,1 1 2' " 5;31#15 1#31 3#11 2' 1# 2' 1#,1 7:5 1#13 $G0 * ;1&' 5:5 0 5 5 31 5 5 $G5 31 5 5: 5H1#55315 %;3*4<! 1#5 5 & ;31&' %% F1=>= 1#1 81 55;3#15 % $ 9 6311 &:= F ( 5 CE 5 C4D 3# 5 5 5 CE 5 C0D 1#11 1#+ 5 The output current depends on the performance of external PNP transistor. Use External PNP transistor of a low saturation type, with an hFE between 100 and 300. *) 1#11 *1) 4 Max. ' 5 5: Typ. ''; ' 5 Min. With respect to Test Circuit, refer to Typical Application. RN5RF * RN5RFxxB ;+= Symbol Item Conditions ' ;1&' x1#J> x3#1+ 55;3#15 $G 5;F#15!5 ;+#15 0 5 ) 5 " " " Max. ' 5 5: Typ. 55;3#15 5 Min. 55;3#15 3&'311&' 3#1 5B5;3#15 ;1&' 1#13 ' &' 81 &5 1#3 1#+ 5 ,1 1 2' 1#31 3#11 2' 1# 2' 1#,1 7:5 $G0 * ;1&' 5 3 81 ;311&' 5;31#15 > Unit 5:V 0 5 5 31 5 5 $G5 31 5 5: 1#11 %;3*4<! 1#5 ;31&' %% F1=>= 1#1 81 5B5;3#15 5 & ( 5H1#55315 % $ 9 6311 &:= F 5 $5 C4D 3# 5 5 5 $5 C0D 1#11 1#+ 5 *1) The output current depends on the performance of external PNP transistor. Use External PNP transistor of a low saturation type, with an hFE between 100 and 300. *) With respect to Test Circuit, refer to Typical Application. 5 RN5RF OPERATION PNP Tr IN 4 RN5RFxxA VDD EXT VOUT 2 OUT 3 - Ra + C CL Rb Vref Current Limit CE GND GND 5 1 !5 5 "% * GND ! & % " & % % (( 5 # % # & " & * # & ! & & " !5& # Notes on selecting external components -3. (( 9 %% ! $ (( % (( # 5- . 311 ,11 # -+. & ! & & % % # ! - &". %312% & # & " * & $ ! %" % ?" 6 # RN5RF TEST CIRCUITS PNP 4 PNP EXT 4 VDD IN VOUT 2 3 IN VOUT VDD 2 3 RN5RFxxA 10F 10F 1 1 GND GND 5 5 CE CE Basic Test Circuit Test Circuit for Supply Current PNP PNP 4 IN OUT ISS IOUT 10F RN5RFxxA 10F OUT EXT EXT 4 VOUT VDD 3 2 OUT VOUT VDD IN 3 2 IOUT 10F RN5RFxxA EXT RN5RFxxA 10F 1 10F 1 GND GND P.G OUT 5 5 CE Test Circuit for Ripple Rejection and Line CE Test Circuit for Load Transient Response Transient Response 7 RN5RF TYPICAL CHARACTERISTICS 1) Output Voltage vs. Input Voltage (Topt=25C) RN5RF50A 5.20 3.00 5.00 Output Voltage VOUT(V) Output Voltage VOUT(V) RN5RF30A 3.20 2.80 2.60 IOUT=0mA 2.40 IOUT=100mA IOUT=500mA 2.20 2.00 4.80 4.60 IOUT=0mA 4.40 IOUT=100mA IOUT=500mA 4.20 4.00 2 3 4 5 6 7 8 9 10 4 5 6 Input Voltage VIN(V) 2) 9 10 RN5RF50A VIN=4V 3.05 3.00 2.95 2.90 2.85 VIN=6V 5.10 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.10 2.80 5.05 5.00 4.95 4.90 4.85 4.80 0 100 200 300 400 500 0 Output Current IOUT(mA) 100 200 300 400 500 Output Current IOUT(mA) Dropout Voltage vs. Output Current RN5RF30A RN5RF50A 0.50 0.50 Topt=-40 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) Topt=-40 Topt=25 0.40 Topt=85 0.30 0.20 0.10 0.00 Topt=25 0.40 Topt=85 0.30 0.20 0.10 0.00 0 100 200 300 400 Output Current IOUT(mA) 8 8 Output Voltage vs. Output Current (Topt=25C) RN5RF30A 3) 7 Input Voltage VIN(V) 500 0 100 200 300 400 Output Current IOUT(mA) 500 RN5RF 4) Output Voltage vs. Temperature RN5RF30A 3.05 3.00 2.95 2.90 -50 -25 0 25 50 75 VIN=6V,IOUT=10mA 5.10 Output Voltage VOUT(V) 3.10 Output Voltage VOUT(V) RN5RF50A VIN=4V,IOUT=10mA 5.05 5.00 4.95 4.90 -50 100 -25 Temperature Topt( ) 5) 25 50 75 100 Temperature Topt( ) Supply Current vs. Input Voltage (Topt=25C) RN5RF30A RN5RF50A IOUT=0mA 100 90 Supply Current ISS(A) Supply Current ISS(A) IOUT=0mA 100 90 80 70 60 50 40 30 20 10 80 70 60 50 40 30 20 10 0 0 0 2 4 6 8 10 0 2 Input Voltage VIN(V) 4 6 8 10 Input Voltage VIN(V) Supply Current vs. Temperature RN5RF30A RN5RF50A VIN=4V,IOUT=0mA 40 30 20 10 0 -50 -25 0 25 50 Temperature Topt( ) 75 100 VIN=6V,IOUT=0mA 50 Supply Current ISS(A) 50 Supply Current ISS(A) 6) 0 40 30 20 10 0 -50 -25 0 25 50 75 100 Temperature Topt( ) 9 RN5RF 7) Ripple Rejection vs. Frequency (Topt=25C) RN5RF30A 80 RN5RF50A VIN=4Vdc+0.5Vp-p,IOUT=100mA,CL=10F 80 70 Ripple Rejection (dB) 70 Ripple Rejection (dB) VIN=6Vdc+0.5Vp-p,IOUT=100mA,CL=10F 60 50 40 30 20 60 50 40 30 20 10 10 0 0.01 0.1 1 10 0 0.01 100 0.1 Frequency (kHz) 100 Frequency (kHz) Line Transient Response (Topt=25C) 4 8 3.2 7 3.1 3 3 Output Voltage 2 2.9 1 2.8 0 -50 -25 0 25 50 75 Input Voltage VIN(V) Input Voltage 5 3.3 Output Voltage VOUT(V) 6 Input Voltage VIN(V) RN5RF50A IOUT=300mA,CL=10F IOUT=300mA,CL=10F Input Voltage 6 5.1 5 5 Output Voltage 4 2 -50 -25 0 25 50 75 4.7 100 125 150 Time T(s) Load Transient Response (Topt=25C) RN5RF30A RN5RF50A 3.2 Output Current 0 -100 3.1 3 Output Voltage -200 2.9 -300 2.8 -400 -100 0 100 200 Time T(s) 300 2.7 400 VIN=6V,CL=10F 200 Output Current IOUT(mA) 100 3.3 Output Voltage VOUT(V) VIN=4V,CL=10F 200 Output Current IOUT(mA) 4.9 4.8 Time T(s) 9) 5.2 3 2.7 100 125 150 5.3 Output Voltage VOUT(V) RN5RF30A 10 10 100 5.3 5.2 Output Current 0 -100 5.1 5 Output Voltage -200 4.9 -300 4.8 -400 -100 0 100 200 Time T(s) 300 4.7 400 Output Voltage VOUT(V) 8) 1 RN5RF TYPICAL APPLICATION PNP Tr EXT IN VDD RN5RFxxA OUT VOUT + + Cap. Cap. CE GND Components Transistor: 2SB766A Capacitor: 10F (Tantalum type) 11 1. The products and the product specifications described in this document are subject to change or discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to Ricoh sales representatives for the latest information thereon. 2. The materials in this document may not be copied or otherwise reproduced in whole or in part without prior written consent of Ricoh. 3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise taking out of your country the products or the technical information described herein. 4. The technical information described in this document shows typical characteristics of and example application circuits for the products. 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