FSDH0165 Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – Fairchild Power Switch(FPS)

FSDH0165
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Single Chip 650V 1A SenseFET PowerSwitch
• Precision Fixed Operating Frequency (100kHz)
• Internal Start-up Switch
• UVLO with Hysterisis (6.7V/8.7V)
• Over Load Protection (typ. 4.5V)
• Over Current Protection (typ. 0.6A)
• Internal Thermal Shutdown Function
• Secondary Side Regulation
• Auto-restart mode
• No load consumption <250mW at 265VAC input
Applications
• Charger & Adaptor for Mobile Phone, PDA & MP3
• Auxiliary Power for PC
Description
The FSDH0165 is specially designed for an off-line SMPS with
minimal external components. The FSDH0165 is a monolithic
high voltage power switching regulator that combine the
SenseFET(LDMOS) with voltage mode PWM control block.
Included PWM controller features integrated fixed oscillator,
under voltage lock out, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shut down protection and
temperature compensated precision current sources for loop
compensation and fault protection circuitry. compared to
discrete MOSFET and controller or RCC switching converter
solution, a FSDH0165 can reduce total component count,
design size, weight and at the same time increase efficiency,
productivity, and system reliability. It has a basic platform well
suited for cost effective design in a flyback converter.
8-DIPH
1
1.Vstr 2.Vfb 3.4.5.6.GND 7.Vcc 8.Drain
Internal Block Diagram
#7 : Vcc
#2 : Vfb
UVLO
VREG(5.8V)
4.5V
VREF
OSC
5.8V
5 uA
0.45 mA
PWM
OLP
+
_
4.5V
TSD
UVLO ≤ 6.7V
#1 : Vstr
UVLO ≥ 8.7V
INTERNAL
BIAS
SFET
S
Q
R
L.E.B
S
Q
R
÷4
OCP
Vth
©2001 Fairchild Semiconductor Corporation
#8 : Drain
#3,#4,#5,#6
GND
Rev.1.0.4