FA531X series
FA531X series
Bipolar IC
For Switching Power Supply Control
s
Dimensions, mm
SOP-8
8
5
FA5310BP(S), FA5314P(S), FA5316P(S)
FA5311BP(S), FA5315P(S), FA5317P(S)
s
Description
The FA531X series are bipolar ICs for switching power supply
control that can drive a power MOSFET.
These ICs contain many functions in a small 8-pin package.
With these ICs, a high-performance and compact power
supply can be created because not many external discrete
components are needed.
1
6.05
4
+0.1
鈥?.05
鈥?Drive circuit for connecting a power MOSFET
鈥?Wide operating frequency range (5 to 600kHz)
鈥?Pulse-by-pulse overcurrent limiting function
鈥?Overload cutoff function (Latch or non-protection mode
selectable)
鈥?Output ON/OFF control function by external signal
鈥?Overvoltage cutoff function in latch mode
鈥?Undervoltage malfunction prevention function
鈥?Low standby current (90碌A typical)
鈥?Exclusive choices by circuits (See selection guide on page 25)
鈥?8-pin package (DIP/SOP)
擄
0~10
0.4
鹵0.1
1.27
鹵0.2
0.6
DIP-8
8
5
s
Applications
鈥?Switching power supply for general equipment
1
9.3
1.5
4
6.5
3.0min 4.5max
3.4
0.3
7.6
s
Block diagram
FA5310BP(S)/FA5311BP(S)/FA5316P(S)/FA5317P(S)
2.54
鹵0.25
0.5
鹵0.1
0~15
藲
0~1
5藲
Pin
No.
1
2
3
4
5
6
7
8
Pin
symbol
Description
Oscillator timing resistor
Feedback
Overcurrent (+) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
RT
FB
IS (+)
GND
OUT
VCC
CT
CS
FA5314P(S)/FA5315P(S)
Pin
No.
1
2
3
4
5
6
7
8
Pin
symbol
Description
Oscillator timing resistor
Feedback
Overcurrent (鈥? detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
RT
FB
IS (鈥?
GND
OUT
VCC
CT
CS
1
2.0max
+0.1 5
鈥?.0
0.20
s
Features
8.2
鹵0.3
5.3