KA5S1265

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KA5S-SERIES

KA5S0765C/KA5S0965/KA5S12656/KA5S1265 Fairchild Power Switch(FPS)

Features
Wide Operating Frequency Range Up to 150kHz Lowest Cost SMPS Solution Lowest External Components Low Start-up Current (Max:170 A) Low Operating Current (Max:12mA) Internal High Voltage SenseFET Over Voltage Protection With Latch Mode (Min23V) Over Load Protection With Latch Mode Over Current Protection With Latch Mode Internal Thermal Protection With Latch Mode Pulse By Pulse Over Current Limiting Under Voltage Lockout With Hysteresis External Sync. Terminal
TO-220-5L

TO-3P-5L

1. Drain 2. Gnd 3. VCC 4. FeedBack 5. Sync.

Internal Block Diagram

VCC 3 VCC UVLO 15/9V Soft Start Sync 5 VREF Feedback 4 0.95mA 2.5V R VREF VCC 4 A OLP (Vfb 7.5V) TSD (Tj 160 C) OVP (VCC 25V) 1 s Window Open Circuit OCP (VS 1.1V) S Q R Shutdown Latch Vth.sy 7V 6V Voffset R S Q Bias Vref 2.5V OSC CLK VREF UVLO

Drain 1

SenseFET

VS Rsense 2 GND

Power-on Reset (VCC 6.5V)

Rev.1.0.5
2003 Fairchild Semiconductor Corporation