
FA7610CP(N)/FA7612CP(N)/FA7617CP(N)
1
s Description
The FA7610CP(N), 7612CP(N) and 7617CP(N) are bipolar
ICs containing basic circuits necessary for PWM-type
switching power supply control.
To minimize the number of external discrete components, the
FA7610CP(N) is provided for a flyback or step-up power-
supply circuit, the FA7612CP(N) for a step-down power-supply
circuit and FA7617CP(N) for a flyback power supply circuit.
s Features
FA7610CP(N)
For flyback transformer-type or step-up power-supply circuit
(maximum output duty = 64% typical)
Totem-pole predriver
PWM-type switching power supply control
Low-voltage operation (VCC = 3.6 to 22V)
Latch-mode short-circuit protection function (no malfunction
by noise)
Soft-start function
Undervoltage lockout function
One capacitor shared for short circuit protection and for soft-
start to minimize the number of external discrete components
FA7612CP(N)
For step-down power-supply circuit
(maximum output duty = up to 100%)
Open collector output
PWM-type switching power supply control
Low-voltage operation (VCC = 3.6 to 22V)
Latch-mode short-circuit protection function (no malfunction
by noise)
Soft-start function
Undervoltage lockout function
One capacitor shared for short circuit protection and for soft-
start to minimize the number of external discrete components
FA7617CP(N)
For flyback transformer-type power-supply circuit (maximum
output duty = 67% typical)
Open collector output
PWM-type switching power supply control
Low-voltage operation (VCC = 3.6 to 22V)
Latch-mode short-circuit protection function (no malfunction
by noise)
Soft-start function
Undervoltage lockout 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
SOP-8
4.9
3.9
6.0
±0.2
0.4±0.1
1.27±0.2
0.20
+0.1
–0.05
0~8
°
1
4
8
5
1.7max
DIP-8
Bipolar IC
For Switching Power Supply Control
FA7610CP(N)/12CP(N)/17CP(N)
1
8
5
4
9.3
6.5
7.6
3.4
4.5max
1.5
3.0min
0~15
0.5±0.1
2.54±0.25
0.3
+0.1
–0.05