KA5Q0765RTHYDTU Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – Quasi Resonant Converter Controller, Internal Burst Mode Controller for Stand-by Mode

KA5Q0765RTH
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Quasi Resonant Converter Controller
• Internal Burst Mode Controller for Stand-by Mode
• Pulse by Pulse Current Limiting
• Over Current Latch Protection
• Over Voltage Protection (Vsync: Min. 11V)
• Internal Thermal Shutdown Function
• Under Voltage Lockout
• Internal High Voltage Sense FET
• Auto-Restart Mode
• Primary Side Regulation
Description
The Fairchild Power Switch(FPS) product family is specially
designed for an off-line SMPS with minimal external
components. The Fairchild Power Switch(FPS) consists of a
high voltage power SenseFET and a current mode PWM IC.
The integrated PWM controller includes the fixed oscillator,
the under voltage lock out, the leading edge blanking, the
optimized gate turn-on/turn-off driver, the thermal shut down
protection, the over voltage protection, and the temperature
compensated precision current sources for loop compensation
and fault protection circuitry. Compared to a discrete
MOSFET and a controller or a RCC switching converter
solutions, a Fairchild Power Switch(FPS) can reduce the total
number of components, design size, and weight, so it will
improve efficiency, productivity, and system reliability. It has
a basic platform well suited for cost-effective design in a
quasi-resonant converter as a C-TV power supply.
TO-220F-5L
Internal Block Diagram
1. Drain 2. GND 3. VCC
4. Feedback 5. Sync
VCC DRAIN
31
SYNC 5
FEEDBACK 4
Burst Mode
3.5V/1.25V
Normal Mode
4.6V/2.6V
VREF
Ifb
+
-
32V +_-1%
-
11V on
+
12V off
-
+
+
OSC
-
-
2.5R
R
+
Internal
BIAS
VREF
S _QB
R
LEB
450ns
+
-
UVLO
15V/9V
Rn_Ro_on
R^{Rf o}o^f ff
7.5V
Sync
12V
Idelay _1V
+
-
OLP
+
-
OVP
+
-
Power
on
Reset
S
Q
R
Offset
Delay
80ns
+
-
OCL
Rsense
1V
Q
S
R
Power on Reset
(VCC=6.5V)
Thermal
Shut Down
2 SOURCE
©2003 Fairchild Semiconductor Corporation
Rev.1.0.2