FA3675F Datasheet | Fuji Electric

Description FA3675F is a control IC for 6-channel DC-DC converter. This IC can directly drive a Nch/Pch-MOSFET. This IC is suitable to reduce converter size because it has many functions in a small package LQFP-48. CMOS IC For Switching Power Supply Control s Dimensions, mm LQFP-48 9.0±0.3 7.0 1.45 max 0.10±0.06 25 s Features - 6-channel PWM control with MOSFET direct driving : 5-channel for Pch-MOSFET, 1channel for Nch-MOSFET - Low input voltage: 2.5V to 20V - ±1.0% high accuracy bandgap reference - Low power consumption by means of CDMOS Standby mode: 20µA(max.) Operating mode: 10m A(max.) - Soft start function for each channel - ON/OFF function for each channel - Timer latch for short protection - Undervoltage lockout - Wide range of operation frequency: 50k Hz to 1MHz - Package: LQFP-48(Thin and small) 9.0±0.3 0.5±0.2 0~7 ˚ ±0.05 0.5±0.1 0.2±0.06 s Application - VTR-camera, digital-steel-camera and portable equipment FA3675F s Block diagram Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pin symbol Description Power supply for control circuit Oscillator timing resistor Oscillator timing capacitor Soft start for Ch. 3 & Ch. 4 Soft start for Ch. 6 Soft start for Ch. 5 Soft start for Ch. 1 Soft start for Ch. 2 Reference voltage output Capacitor for reference voltage output Regulated voltage output Ch. 2 inverting input to error amplifier Ch. 2 output of error amplifier Ch. 1 inverting input to error amplifier Ch. 1 output of error amplifier Ch. 5 non-inverting input to error amplifier Ch. 5 inverting input to error amplifier Ch. 5 output of error amplifier Ch. 6 inverting input to error amplifier Ch. 6 output of error amplifier Ch. 3 non-inverting input to error amplifier Ch. 3 inverting input to error amplifier Ch. 3 output of error amplifier Ch. 4 non-inverting input to error amplifier Pin No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47...