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FA7611CP fiches techniques PDF

Fuji Electric - Bipolar IC For Switching Power Supply Control

Numéro de référence FA7611CP
Description Bipolar IC For Switching Power Supply Control
Fabricant Fuji Electric 
Logo Fuji Electric 





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FA7611CP fiche technique
FFAA76171C6P(1E)1CP(E)
Bipolar IC
For Switching Power Supply Control
s Description
The FA7611CP(E) is a bipolar IC containing basic circuit
necessary for PWM-type switching power supply control.
s Features
• Low-voltage operation (VCC = 3.6 to 22V)
• Predrivers: Totem-pole output or open-collector for CH1 and
open-collector output for CH2
• Latch-mode short-circuit protection function (no malfunction
due to electrical noise)
• soft-start function
• Undervoltage lock-out function
• One capacitor shared for short circuit protection and for soft start
to minimize the number of external discrete components
s Applications
• Battery power supply for portable equipment
s Dimensions, mm
SSOP-16
16 9
1 6.2 8
0.3 0.65
DIP-16
16
9
0.6
1 19.4
8
0.81
1.5
2.54±0.25
0.5±0.1
7.6
0~15˚
0.3+–00.1.05
0~15˚
s Block diagram
1
Pin Pin
No. symbol
1 CT
2 CS
3 DT2
4 IN2 (+)
5 IN2 (–)
6 FB2
7 GND
8 OUT2
9 VCC
10 OUT1R
11 OUT1
12 FB1
13 IN1 (–)
14 IN1 (+)
15 DT1
16 REF
Description
Oscillator timing capacitor
Capacitor for soft-start, short-
circuit protection and delay
Dead time adjustment
Non-inverting input to error
amplifier
Inverting input to error amplifier
Error amplifier output
Ground
CH. 2 Output
Power supply
CH. 1 Current limiting resistor
CH. 1 Output
Error amplifier output
Inverting input to error amplifier
Non-inverting input to error
amplifier
Reference voltage (0.5V)
Dead time adjustment
Reference voltage output (2.5V)

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