FA5540 Fuji Electric holdings CO.,Ltd, FA5540 Datasheet - Page 4

• Manufacturer Part Number: FA5540
• Description: Fuji Switching Power Supply Control Ic
• Manufacturer: Fuji Electric holdings CO.,Ltd

2. Features
Function list for each type
3. Outline
Rev.0 July-2007
1. Description
2.54
FA5540/41/42 is a quasi-resonant type switching power supply control IC possible to drive a power
MOSFET directly. Low power consumption is achieved by using high-voltage CMOS process. Though it is a
small package with 8 pins, it has a lot of functions and enables to decrease external parts. Therefore it is
possible to realize a small space and high cost-performance power supply.
・ Low power consumption by using high-voltage CMOS process.
・ Low power consumption with built-in startup circuit.
・ Low current consumption, in operation : 1mA(FA5540), 1.2mA(FA5541/42)
・ Maximum frequency limitation function : 60kHz(FA5540), 120kHz(FA5541/42)
・ Burst function at light load.
・ Drive circuit possible to connect to a power MOSFET directly.
・ Over load protection function (FA5540/41 : auto restart , FA5542 : timer latch)
・ Over voltage shutdown circuit in latch mode.
・ Under voltage lockout circuit
・ Package : DIP-8/SOP-8
FA5540
FA5541
FA5542
8
1
Type
Output current: 0.5A (sink) 0.25A (source)
2.54×3=7.62
9.4±0.3
4
5
0.5±0.1
Maximum frequency
DIP-8
120kHz(typ)
120kHz(typ)
60kHz(typ)
0.25 ±0.1
7.6
FA5540/5541/5542
Over load protection
Auto restart
Auto restart
Timer latch
1 PIN MARK
4
1.27
operating voltage
Recommended
12 to 14.5V
12 to 26V
12 to 26V
5.0±0.25
0.4±0.1
SOP-8
Fuji Electric Device Technology
protection（VCC）
Over voltage
16V(typ)
28V(typ)
28V(typ)