R1211D002A-TR RICOH [RICOH electronics devices division], R1211D002A-TR Datasheet
R1211D002A-TR
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R1211D002A-TR Summary of contents
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OUTLINE The R1211X Series are CMOS-based PWM step-up DC/DC converter controllers with low supply current. Each of the R1211X Series consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a reference current unit, a ...
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BLOCK DIAGRAMS Version AMPOUT Version Chip Enable Rev. 1.10 OSC DTC Vref UVLO OSC DTC Vref UVLO Latch - 2 - EXT V IN GND Latch DELAY EXT V IN GND DELAY ...
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SELECTION GUIDE In the R1211X Series, the oscillator frequency, the optional function, and the package 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; R1211X002X-TR ...
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PIN DESCRIPTIONS Pin No. SON6 SOT23- AMPOUT ABSOLUTE MAXIMUM RATINGS Symbol V V Pin Voltage EXT Pin Output Voltage EXT V DELAY Pin Voltage DLY ...
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ELECTRICAL CHARACTERISTICS R1211X002A Symbol Item V Operating Input Voltage Voltage Tolerance Voltage Temperature Coefficient Input Current Oscillator Frequency OSC Oscillator Frequency f / OSC ...
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R1211X002B Symbol Item V Operating Input Voltage Voltage Tolerance Voltage Temperature Coefficient Input Current Oscillator Frequency OSC Oscillator Frequency f / OSC Temperature Coefficient ...
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R1211X002C Symbol Item V Operating Input Voltage Voltage Tolerance Voltage Temperature Coefficient Input Current Oscillator Frequency OSC Oscillator Frequency f / OSC Temperature Coefficient ...
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R1211X002D Symbol Item V Operating Input Voltage Voltage Tolerance Voltage Temperature Coefficient Input Current Oscillator Frequency OSC Oscillator Frequency f / OSC Temperature Coefficient ...
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TYPICAL APPLICATIONS AND TECHNICAL NOTES <R1211X002A/R1211X002C> NMOS: IRF7601 (International Rectifier) Inductor : LDR655312T-100 10 H (TDK) for R1211X002A Diode: CRS02 (Toshiba) C1: 4.7 F (Ceramic) C2: 0.22 F (Ceramic) C3 (Ceramic) C4: 680pF(Ceramic) C5: 2200pF(Ceramic) <R1211X002B/R1211X002D> ...
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Use more capacitance value of bypass capacitor between V applications above. In terms of the capacitor for setting delay time of the latch protection shown in typical applications of the previous page, connect between ...
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Output Current and Selection of External Components V IN GND Discontinuous Mode IL ILxmax ILxmin Tf Ton Toff T=1/fosc There are two modes, or discontinuous mode and continuous mode for the PWM step-up switching regulator depending on the continuous characteristic ...
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The continuous current through the inductor is described as Iconst, then /( OUT OSC IN ON OUT In this moment, the peak current, ILxmax flowing through the inductor and the ...
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When the voltage level of SS becomes the setting voltage with the ration of R1 and R2 or more, switching operation starts. V level gradually increases together with SS level. V REF cycle depends on the lowest level among AMPOUT, ...
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TEST CIRCUITS R1211X002A/R1211X002C *Oscillator Frequency, Maximum Duty Cycle, V 3.3V V EXT IN OSC ILLOSC ILLOSC ILLOSCO ILLOSC V FB GND DELAY *EXT “H” ON Resistance 3.3V EXT V IN ...
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Pin Detector Threshold Voltage Test 3. EXT OS OSC ILLOSC ILLOSC ILLOSC ILLOSC V FB GND DELAY *UVLO Detector Threshold/Hysteresis Range Test V EXT IN OSC C ...
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R1211X002B/R1211X002D *Oscillator Frequency, Maximum Duty Cycle, V 3.3V V EXT OSC ILLOSC OS OS ILLOSC ILLOSCOPE ILLOSC V FB GND DELAY *EXT “H” ON Resistance 3.3V EXT V IN OSC ILLOSC ...
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Pin Detector Threshold Voltage Test 3.3V V EXT IN CE OSC ILLOSC ILLOSC ILLOSCOPE ILLOSC V FB GND DELAY *UVLO Detector Threshold/Hysteresis Range Test EXT OSC ...
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Inductor ( (TDK LDR655312T-220) Diode (SD) : CRS02 (Toshiba) Capacitors C1: 680pF(Ceramic), C2 (Tantalum)+2.2 F (Ceramic), C3 (Tantalum)+2.2 F (Ceramic), C5 (Tantalum) NMOS Transistor : IRF7601 (International Rectifier) Resistors : ...
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R1211X002C L=22uH V =5V OUT 5 Output Current I OUT R1211X002C 15 Output Current I OUT R1211X002D 10 Output Current I Rev. 1.10 10.2 10 VIN=2.5V VIN=3.3V 9.8 ...
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Efficiency vs. Output Current R1211X002A 100 Output Current I OUT R1211X002A L=10uH V 100 Output Current I OUT R1211X002B 100 ...
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R1211X002C 100 Output Current I OUT R1211X002C L=22uH V 100 Output Current I OUT R1211X002D 100 Output Current I ...
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V Voltage vs. Input Voltage (Topt = R1211X002X 1015 1010 1005 1000 995 990 985 Input Voltage V 4) Oscillator Frequency vs. Input Voltage (Topt=25 C) R1211X002A/B 900 800 700 600 500 2 3 ...
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R1211X002C 400 300 200 100 Input Voltage Maximum Duty Cycle vs. Input Voltage (Topt=25 C) R1211X002A Input Voltage ...
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Oscillator Frequency vs. Temperature R1211X002A/B V =3.3V IN 900 800 700 600 500 -50 - Temperature Topt 9) Supply Current vs. Temperature R1211X002A V 600 500 400 300 200 100 0 -50 - Temperature Topt ...
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Maximum Duty Cycle vs. Temperature R1211X002A -50 - Temperature Topt 11) EXT”H” Output Current vs. Temperature R1211X002X -50 ...
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Soft-start Time vs. Temperature R1211X002A -50 - Temperature Topt 14) UVLO Detector Threshold vs. Temperature R1211X002X V 2300 2250 2200 2150 2100 -50 - Temperature Topt 15) AMP ...
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AMP “L” Output Current vs. Temperature R1211X002A -50 - Temperature Topt 17) DELAY Pin Charge Current vs. Temperature R1211X002A -50 -25 0 ...
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DELAY Pin Discharge Current vs. Temperature R1211X002X -50 - Temperature Topt 20) CE “L” Input Voltage vs. Temperature R1211X002B/D V 1200 1100 1000 900 800 700 600 -50 -25 0 ...
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Standby Current vs. Temperature R1211X002B 0.8 0.6 0.4 0.2 0 -0.2 -50 - Temperature Topt 23) Load Transient Response 5.6 5.0 4.4 11.2 10.0 8.8 16.8 15.0 13.2 Rev. 1.10 =6. 100 ...
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Rev. 1.10 R1211X002B V OUT I OUT Time [5ms/div] R1211X002B V OUT I OUT Time [5ms/div] R1211X002B V OUT I OUT Time [5ms/div] R1211X002C V OUT I OUT ...
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Rev. 1.10 R1211X002C V OUT I OUT Time [5ms/div] R1211X002C V OUT I OUT Time [5ms/div] R1211X002D V OUT I OUT Time [5ms/div] R1211X002D V OUT I OUT ...
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Power-on Response R1211X002A Time [5ms/div] R1211X002C L=22uH V =3. ...
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Turn-on speed with CE pin R1211X002B Time [5ms/div] Rev. 1.10 L=10uH V =3. =10mA IN OUT 16 14 (c)V =15V OUT 12 10 (b)V =10V ...