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www.fairchildsemi.com
KA5x03xx-SERIES
KA5H0365R, KA5M0365R, KA5L0365R KA5H0380R, KA5M0380R, KA5L0380R Fairchild Power Switch(FPS)
Features
• Precision Fixed Operating Frequency (100/67/50kHz) • Low Start-up Current(Typ. 100uA) • Pulse by Pulse Current Limiting • Over Current Protection • Over Voltage Protection (Min. 25V) • Internal Thermal Shutdown Function • Under Voltage Lockout • Internal High Voltage Sense FET • Auto-Restart Mode
Applications
• SMPS for VCR, SVR, STB, DVD & DVCD • SMPS for Printer, Facsimile & Scanner • Adaptor for Camcorder
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. Included PWM controller integrates the fixed frequency oscillator, the under voltage lock-out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shutdown protection, the over voltage protection, and the temperature compensated precision current sources for the loop compensation and the fault protection circuitry. Compared to a discrete MOSFET and a PWM controller or an RCCsolution, a Fairchild Power Switch(FPS) can reduce the total component count, design size and weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for the cost effective design in either a flyback converter or a forward converter
TO-220F-4L
Internal Block Diagram
1 1. GND 2. Drain 3. VCC 4. FB
#3 VCC #4 FB
32V 5V Internal Vref bias
Good logic
5μA
7.5V 27V
OSC
9V 1mA
S Q
R
2.5R 1R
− +
L.E.B
0.1V +
− + Thermal S/D
S Q
R
− OVER VOLTAGE S/D
Power on reset
©2003 Fairchild Semiconductor Corporation
SFET
#2 DRAIN
#1 GND Rev.1.0.7
KA5X03XX-SERIES
Absolute Maximum Ratings
(Ta=25°C, unless otherwise specified)
Characteristic KA5H0365R, KA5M0365R, KA5L0365R Drain-Gate Voltage (RGS=1MΩ) Gate-Source (GND) Voltage Drain Current Pulsed (1) Continuous Drain Current (TC=25°C) Continuous Drain Current (TC=100°C) Single Pulsed Avalanche Energy (2) Maximum Supply Voltage Analog Input Voltage Range
Total Power Dissipation
Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range.
KA5H0380R, KA5M0380R, KA5L0380R Drain-Gate Voltage (RGS=1MΩ) Gate-Source (GND) Voltage Drain Current Pulsed (1) Continuous Drain Current (TC=25°C) Continuous Drain Current (TC=100°C) Single Pulsed Avalanche Energy (2) Maximum Supply Voltage Analog Input Voltage Range
Total Power Dissipation
Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range.
Symbol
VDGR VGS IDM
ID ID EAS VCC,MAX VFB PD Derating TJ TA TSTG
VDGR VGS IDM
ID ID EAS VCC,MAX VFB PD Derating TJ TA TSTG
Note: 1. Repetitive rating: Pulse width limited by maximum junction temperature 2. L = 51mH, starting Tj = 25°C 3. L = 13μH, starting Tj = 25°C
Value
650 ±30 12.0 3.0 2.4 358 30 -0.3 to VSD 75.