FA7611CP(E)
FA7611CP(E)
s
Description
The FA7611CP(E) is a bipolar IC containing basic circuit
necessary for PWM-type switching power supply control.
Bipolar IC
For Switching Power Supply Control
s
Dimensions, mm
SSOP-16
16
9
s
Features
鈥?Low-voltage operation (V
CC
= 3.6 to 22V)
鈥?Predrivers: Totem-pole output or open-collector for CH1 and
open-collector output for CH2
鈥?Latch-mode short-circuit protection function (no malfunction
due to electrical noise)
鈥?soft-start function
鈥?Undervoltage lock-out function
鈥?One capacitor shared for short circuit protection and for soft start
to minimize the number of external discrete components
5.3
7.9
卤0.3
1
0.1
卤0.1
6.2
+0.1
8
0.2
鈥?.05
0~10藲
s
Applications
鈥?Battery power supply for portable equipment
0.6
0.3
0.65
DIP-16
16
9
1
0.81
19.4
1.5
8
3.1min 4.3max
0.2min
3.4
6.5
.0
0.3
鈥?
+0.1 5
7.6
2.54
卤0.25
0.5
卤0.1
0~15
藲
0~1
5藲
s
Block diagram
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin
symbol
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)
CT
CS
DT2
IN2 (+)
IN2 (鈥?
FB2
GND
OUT2
VCC
OUT1R
OUT1
FB1
IN1 (鈥?
IN1 (+)
15
16
DT1
REF
1
2.1max
1
2
3
4
5
6
