For Switching Power Supply Control
FA3675F FA3675F
s Description
FA3675F is a control IC for 6-channel DC-DC converter. This IC can directly drive a Nch/Pc...
Description
FA3675F FA3675F
s 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: 10mA(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: 50kHz to 1MHz Package: LQFP-48(Thin and small)
37
36
24
9.0±0.3
8.0
48
1
12
13
7.0
7.8
0.5±0.2
0.127
0~7 ˚
±0.05
0.5±0.1
0.2±0.06
s Application
VTR-camera, digital-steel-camera and portable equipment
122
FA3675F
s Block diagram
123
FA3675F
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...
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