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FA7700V Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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FA7700V Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 13 page  FA7700V, FA7701V 1 s Block diagram FA7700V FA7701V FA7700V, FA7701V s Dimensions, mm TSSOP-8 ±0.3 3.1 ±0.1 0.22 ±0.2 0.5 0.65 0.575 typ s Description FA7700V/FA7701V are the PWM type DC to DC converter control ICs with 1ch output that can directly drive power MOSFETs. CMOS devices with high breakdown voltage are used in these ICs and low power consumption is achieved. These ICs have not only the functions equivalent to those of FA76XX series but also the functions of directly driving Nch/Pch MOSFETs, lower power consumption, higher frequency operation, and less external components. s Features • Wide range of supply voltage: VCC=2.5 to 20V • FA7700V: For boost, flyback converter (Maximum output duty cycle is 80%) • FA7701V: For buck converter (Maximum output duty cycle is 100%) • Output stage consist of CMOS push-pull circuit, and achieves a high speed switching of external MOSFETs. (FA7700V: For Nch-MOSFET driving, FA7701V: For Pch-MOSFET driving) • High accuracy reference voltage (Error amplifier): 0.88V ±2% • Soft start function • Adjustable built-in timer latch for short-circuit protection • Output ON/OFF control function • Less external discrete components needed (2 components less than conventional version of the equivalent products) • Low power consumption Stand-by current: 40 µA typ. Operating current: 1.2mA typ. (Including error amplifier output current and oscillator current) • High frequency operation: 50kHz to 1MHz • Package: TSSOP-8, thin and small Pin No. Pin symbol Description 1 RT Oscillator timing resistor 2 REF Internal bias voltage 3 IN (–) Error amplifier inverting input 4 FB Error amplifier output 5 GND Ground 6 OUT Output for driving switching device 7 VCC Power supply 8 CS ON/OFF, soft start, timer latched short circuit protection RT REF VREF OSC BIAS UVLO 5.5V – + OFF 4 FB IN– + – + PWM – + ON/OFF S.C.DET 0.3V 1.5V 1.5V – + S.C.P 2.2V VREF Power Good Signal ON/OFF 1 2 3 8 7 6 5 CS VCC OUT GND – + 0.88V ER.AMP + 2.2V + – + PWM – + ER.AMP ON/OFF VREF OSC BIAS UVLO 5.5V – + – + ON/OFF S.C.DET 0.3V 1.5V 1.5V – + S.C.P 2.2V OFF RT REF 4 FB IN– 1 2 3 8 7 6 5 CS VCC OUT GND 0.88V Power Good Signal VREF 2.2V CMOS IC For Switching Power Supply Control |
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