Critical Conduction Mode PFC IC
FA1A50N
Datasheet
1. Overview
FA1A50 is power-factor correction converter IC operating in critical conduction mode. It realizes low power consumption by
using high voltage CMOS process. It is equipped with many fault protection functions such as FB short-circuit detection
circuit and double OVP function.
2. Features
ꢀ Very Low Standby Power by disusing Input Voltage Detection Resistors
ꢀ High-precision over current protection : 0.6V±2%
ꢀ Improved power efficiency at light load due to Maximum Frequency
Limitation
ꢀ Soften Audible Noise at Startup Over Shoot Reduction functions
ꢀ Low current consumption by CMOS process
ꢀ Start-up : 500µA(typ.), Operating : 1.5mA(typ.)
ꢀ Enabled to drive power MOSFET directly
ꢀ Output peak current, source : 500mA, sink : 1000mA
ꢀ Protects the output electrolytic capacitor by the double OVP function, even if
5.0±0.25
a fault happen in the output detection.
ꢀ Short protection at feedback (FB) pin
ꢀ Under-voltage Lockout
ꢀ Restart timer
1.27
ꢀ 8-pin package (SOP)
Package:SOP-8
3. Function list by types
Type
Startup Threshold
9.6V(typ.)
Double OVP function
FA1A50N
○
4. Application circuit example
L
N
VCC
GND
1
2
3
4
8
FB
VCC
7
6
5
COMP OUT
RT
GND
CS
OVP
FA1A50N
FA1A00N/01N
© Fuji Electric Co., Ltd. All rights reserved.
Sep,2016 DS-167E Rev2.0
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