FA7630CP(E)
FA7630CP(E)
s
Description
The FA7630CP(E) is dual channel PWM-type switching power
supply control IC.
This IC can drive Pch-MOSFET directly and is optimum for
large power DC-DC converter.
This IC has all the necessary protection functions for a power
MOSFET. It is optimum for a portable equipment power
supply which uses low-voltage input to output comparably
large power.
Bipolar IC
For Switching Power Supply Control
s
Dimensions, mm
SSOP-20
20
11
s
Features
鈥?Dual channel PWM-type switching power supply control
鈥?/div>
卤2.6%
(V
REF
) and
卤3%
(V
B
) reference voltage
鈥?Low voltage operation (Vcc: 5 to 20V)
鈥?Drive circuit for connecting a Pch-MOSFET
鈥?Overload cutoff circuit with timer latch circuit
鈥?Soft start circuit
鈥?Undervoltage lockout function (UVLO)
鈥?Pulse-by-pulse overcurrent limiting function
鈥?Output ON/OFF control function for each channel
鈥?Master-slave synchronized operation without external
components
鈥?Maximum operating frequency is 500kHz
0.1
卤0.1
+0.1
7.2
0.2
鈥?.05
1
10
5.3
7.9
卤0.3
0~10藲
0.6
0.3
0.65
DIP-20
20
11
1
0.77
24.4
10
1.52
2.54min 5.1max
3.6
0.51min
6.4
2.1max
鈥?
0.25
+0.1 5
.0
7.62
藲
5藲
0~1
2.54
卤0.25
0.46
卤0.1
0~15
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
Pin
symbol
Description
Oscillator timing capacitor
Oscillator timing resistor
CT
RT
ON/OFF2
Output ON/OFF control 2
IN2+
Non-inverting input to error
amplifier
IN2
鈥?/div>
FB2
DT2
OCL2
GND
OUT2
OUT1
VCC
OCL1
DT1
FB1
IN1+
Inverting input to error amplifier
Error amplifier output
Dead time adjustment
Overcurrent limiting circuit 2
Ground
CH.2 output
CH.1 output
Power supply
Overcurrent limiting circuit
Dead time adjustment
Error amplifier output
Non-inverting input to error
amplifier
ON/OFF1
Output ON/OFF control 1
SYNC IN
CP
REF
Synchronizing signal input
Timer and latch circuit
Reference voltage output
1
1
2
3
4
5
