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
–0.05
• Drive circuit for connecting a power MOSFET
• Wide operating frequency range (5 to 600kHz)
• Pulse-by-pulse overcurrent limiting function
• Overload cutoff function (Latch or non-protection mode
selectable)
• Output ON/OFF control function by external signal
• Overvoltage cutoff function in latch mode
• Undervoltage malfunction prevention function
• Low standby current (90µA typical)
• Exclusive choices by circuits (See selection guide on page 25)
• 8-pin package (DIP/SOP)
°
0~10
0.4
±0.1
1.27
±0.2
0.6
DIP-8
8
5
s
Applications
• 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
±0.25
0.5
±0.1
0~15
˚
0~1
5˚
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 (–) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
RT
FB
IS (–)
GND
OUT
VCC
CT
CS
1
2.0max
+0.1 5
–0.0
0.20
s
Features
8.2
±0.3
5.3
FUJI [ FUJI ELECTRIC ]
