LA5S0765C
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KA5S-SERIES
KA5S0765C/KA5S0965/KA5S12656/KA5S1265 Fairchild Power Switch(FP...
Description
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www.fairchildsemi.com
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:170µA) 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
1
TO-3P-5L
1
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 4µA OLP (Vfb=7.5V) TSD (Tj=160°C) OVP (VCC=25V) 1µs Window Open Circuit OCP (VS=1.1V) 2.5V R VREF VCC Vth.sy + 7V 6V + Voffset R S Q Bias Vref 2.5V OSC CLK + VREF UVLO
Drain 1
SenseFET
VS S Q R Shutdown Latch Rsense 2 GND
Power-on Reset (VCC=6.5V)
Rev.1.0.5
©2003 Fairchild Semiconductor Corporation
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KA5S-SERIES
Absolute Maximum Ratings
(Ta=25°C, unless otherwise specified) Characteristic KA5S0765C Drain-Gate Voltage(RGS=1MΩ) Gate-Source(GND) Voltage Drain Current Pulsed
(1)
Symbol VDGR VGS IDM ID ID
(2)
Value 650 ±30 28 7.0 5.6 27(570) 30 -0.3 to VCC -0.3 to 8 140 1.11 +160 -25 to +85 -55 to +150
Unit V V ADC ADC ADC A(mJ) V V V W W/°C °C °C °C
Continuous Drain Current (Tc = 2...
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