RS5RM RICOH Co.,Ltd., RS5RM Datasheet
RS5RM
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RS5RM Summary of contents
Page 1
... RS5RM SERIES OUTLINE The RS5RM Series are CMOS-based step-up DC/DC converter ICs equipped with a voltage regulator (VR) and a voltage detector (VD). Each of these step-up DC/DC converter ICs consists of a PWM DC/DC converter, a linear regulator and a voltage detector. These ICs are output-voltage-fixed type regulators which function as a linear regulator when input voltage is high, and as step-up DC/DC converter+linear regulator when input voltage is low, by using an inductor, a diode and a capacitor as external parts for the ICs ...
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... VD OUT VD SELECTION GUIDE In the RS5RM Series, the output voltage, the detector threshold, the version symbols, and the taping type for the ICs can be selected at the user's request. The selection can be made by designating the part number as shown below: RS5RMxxxxx –xx ↑ ↑ ↑ ↑ ...
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... Voltage Detector Output Pin.Nch Open Drain Output OUT 4 VD Detection Input Pin of Voltage Detector Output Pin for Regulator OUT 6 V Step-up Output Pin.Power Supply Pin DD 7 EXT External Transistor Drive Pin 8 L External Inductor Drive Pin Pin Description RS5RM 3 ...
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... RS5RM ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage EXT Output Voltage V OUT VD OUT V CE Input Voltage Inductor Drive Output Current I EXT P Power Dissipation D Topt Operating Temperature Range Tstg Storage Temperature Range Tsolder Lead Temperature (Soldering) Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions ...
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... RL 2. =5mA =Vss –0 –0 CE=V –0.5 DD CE=Vss –0.5 V =3V, L=100µH, IN C=22µF, CE=Vss, No load V =3V, L=100µH, IN C=22µF, CE load RS5RM Topt=25˚C Typ. Max. Unit Note 10 V 4.10 4.21 V 0.9 1 kHz 0.5 V 0.01 10.00 µA 0 0.5 V 3.60 3.69 V 0.3 V ...
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... RS5RM RS5RM5045A,B • Symbol Item V Operation Input Voltage IN V Step-up Output Voltage DD Voscst Oscillator Start-up Voltage Vhold Hold-on Voltage fosc Oscillator Frequency Maxdty Oscillator Maximum Duty Cycle V Lx Output Voltage Leakage Current Voltage Limit lim LX V EXT Output Pch ON Voltage ...
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... ILmin does not reach zero, and IL (=i1) increases from ILmin (>0). In the case of PWM control system, with the oscillator frequency (fosc) maintained constant, the output volt- age is maintained constant by controlling the on-time period (ton OUT V OUT CL RS5RM < Current through L > IL min IL max topen t ton toff T=1/ fosc 7 ...
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... RS5RM OPERATION V IN 100µF FIG. A Diagram of RS5RM including external circuits 1. V Output Voltage DD V output voltage is shown in Fig (1) In the case of V –Vf≥ Area B, LxTr is maintained in an OFF state, so that V step-up operation. (2) In the case of V –Vf< Area A, this IC functions as Step-up DC/DC converter ...
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... Note1 EXT OUT 1µF C OUT Test Circuit EXT OUT OPEN Digitizing Oscilloscope RS5RM V IN Oscilloscope 22µF C VDD Oscilloscope CE EXT VD V OUT OUT Test Circuit EXT VD ...
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... OUT 22µF 100Ω 1µF Pulse Generator Test Circuit 6 100µH 220Ω 100Ω OUT Pulse 1µF Generator VD IN Test Circuit RS5RM Rb NPN Tr EXT OUT Test Circuit VDD C OUT ...
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... Typical Characteristics 6) Test Circuit 5: Typical Characteristics 15) Test Circuit 6: Typical Characteristics 17) Test Circuit 7: Typical Characteristics 18) Test Circuit 8: Typical Characteristics 19) 20) In the present IC, input current at no load is defined as supply current.(CE=V And when CE=V , the input current (no load) is defired as standby current. DD × RS5RM ). SS 11 ...
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... IN RS5RM4036A 4.5 4.0 I =10mA OUT I =20mA OUT 3.5 I =30mA OUT I =40mA OUT 3 Input Voltage V (V) IN RS5RM3531A 4.0 3.5 I =10mA OUT I =20mA OUT 3.0 I =30mA OUT I =40mA OUT 2 Input Voltage V (V) IN RS5RM3027A 3.5 3.0 I =10mA OUT I =20mA OUT 2 ...
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... IN 3.0 2.5 0 150 (mA) 3.5 3.0 2.5 2.0 80 100 0 (mA) RS5RM RS5RM4036A 150 100 Output Current I (mA) OUT RS5RM3531A V = 100 Output Current I (mA) OUT RS5RM3027A V = 100 Output Current I (mA) OUT 13 ...
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... OUT L=100µH C =47µF OUT Tantalum 3.0V 4. (mA) OUT L=100µH C =100µF OUT 3.0V 4. (mA) OUT L=47µH C =22µF RS5RM5045A OUT Tantalum 45 40 4. =1. Output Current I (mA) OUT L=220µH C =22µF ...
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... RS5RM RS5RM4036A I =40mA OUT I =30mA OUT I =20mA OUT I =10mA OUT Input Voltage V (V) IN RS5RM3531A I =40mA OUT I =30mA OUT I =20mA OUT I =10mA OUT Input Voltage V (V) IN RS5RM3027A I =40mA OUT I =30mA OUT I =20mA OUT ...
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... OUT RS5RM4036A 100 = = = 100 Output Current I (mA) OUT RS5RM3531A 100 = = 100 80 Output Current I (mA) OUT RS5RM3027A 100 =3V ...
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... Output Voltage (V 4.3 4.1 3.9 3.7 –40 – 100 RS5RM RS5RM5045B C =22µF VDD C =47µF OUT 10mA 40mA I =1mA OUT Input Voltage V (V) IN RS5RM3624A 100 Temperature Topt (˚C) ) vs.Temperature DD RS5RM3624A 100 Temperature Topt (˚C) 17 ...
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... Supply Current vs. Input Voltage (V) IN 15) VD Input Current vs. VD Input Voltage B version A version 100 RS5RM3624A 2.6 2.4 2.2 2.0 –40 –20 80 100 Temperature Topt (˚C) RS5RMxxxxA 300 200 5045 4036 3624 3531 100 3329 3027 Input Voltage V (V) IN RS5RM5045A V =5. ...
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... Start-up/Hold-on Voltage vs. Output Current RS5RM5045A 1.6 1.4 1.2 1.0 Vstart 0.8 0.6 0.4 Vhold 0 Output Current I OUT 15 20 (mA) RS5RM 19 ...
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... RS5RM5045A Output Voltage Output Current Time t (ms) RS5RM5045A Output Voltage Output Current Time t(ms) RS5RM5045A Output Voltage Output Current Time t (ms) V =3. =1µF OUT 180 150 120 1mA ...
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... Output Current 1 0 – RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM V =5. =47µF OUT 180 150 120 1mA =3. =100µF OUT 180 150 120 90 60 ...
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... RS5RM5045A Output Voltage Input Voltage Time t (ms) RS5RM5045A Output Voltage Input Voltage Time t (ms) RS5RM5045A Output Voltage Input Voltage Time t (ms) I =1mA OUT C =1µF OUT =1mA OUT C =1µF OUT ...
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... Output Voltage 5.0 4.9 4.8 Input Voltage 4.7 4.6 4.5 4.4 – RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM I =30mA OUT C =1µF OUT =1mA OUT C =47µF OUT =1mA OUT C =47µF ...
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... RS5RM5045A Output Voltage Input Voltage Time t (ms) RS5RM5045A Output Voltage Input Voltage Time t (ms) RS5RM5045A Output Voltage Input Voltage Time t (ms) I =30mA OUT C =47µF OUT =30mA OUT C =47µF ...
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... Output Voltage 5.0 4.9 4.8 Input Voltage 4.7 4.6 4.5 4.4 – RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM5045A Time t (ms) RS5RM I =1mA OUT C =100µF OUT =30mA OUT C =100µF OUT =30mA OUT C =100µF ...
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... V DD 5.5 5.4 5.3 5.2 3.0V 4.0V 2.0V 5.1 V OUT 5.0 4.9 4.8 V =1.2V IN 4.7 4.6 100 200 300 400 500 600 700 0 V Output Current I (mA) DD DDOUT Output Current DD RS5RM5045A I =20mA OUT 100 4.0V 60 3. =1. 100 200 300 400 500 600 700 0 V Output Current I (mA) DD DDOUT RS5RM5045A I =60mA ...
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... BASIC CIRCUIT Examples of Parts : Inductor Diode Capacitor : 22µF (Tantalum type Inductor Vss Lx Diode CE EXT OUT DD + Capacitor OUT : RCR-664D (100µH) ; Sumida Electric Co., Ltd. : MA721 (Schottky type) ; Matsushita Electronics Corporation RS5RM 27 ...
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... PNP Tr :2SA1213 Rb :220Ω Rbe :12Ω D Rb1 V DD EXT C VDD RS5RM Vss (NOTE) High efficiency current boost circuit,using RS5RM5045x with RN5RG50A(RICOH Voltage Regulator). C :0.01µF D NPN Tr :2SD1628 PNP Tr :2SA1213 Rb1 :220Ω Rb2 :330Ω Rbe :10kΩ V PNP Tr OUT C ...
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... PCB patterns and the IC do not exceed their respective rated values. APPLICATION HINTS Pin, make minimum connection OUT Pin by switching. When the impedance of the SS exceeds the absolute maximum ratings at the LX RS5RM 29 ...