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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 2.5V R VREF VCC 4µA OLP (Vfb=7.5V) TSD (Tj=160°C) OVP (VCC=25V) 1µs 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 KA5S-SERIES Absolute Maximum Ratings (Ta=25°C, unless otherwise specified) Characteristic KA5S0765C Drain-Gate Voltage(RGS=1M) 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 = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current (Energy Maximum Supply Voltage Input Voltage Range Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. KA5S0965 Drain-Gate Voltage(RGS=1M) Gate-Source(GND) Voltage Drain Current Pulsed(1) Continuous Drain Current (Tc = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current(3)(Energy (2)) Maximum Supply Voltage Input Voltage Range Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. (3) ) IAS(EAS) VCC,MAX VFB VSS PD (Watt H/S) Darting TJ TA TSTG VDGR VGS IDM ID ID IAS(EAS) VCC,MAX VFB VSS PD (Watt H/S) Darting TJ TA TSTG 650 ±30 36 9.0 5.8 25(950) 30 -0.3 to VCC -0.3 to 8 170 1.33 +160 -25 to +85 -55 to +150 V V ADC ADC ADC A(mJ) V V V W W/°C °C °C °C 2 KA5S-SERIES Absolute Maximum Ratings (Continued) (Ta=25°C, unless otherwise specified) Characteristic KA5S12656 Drain-Gate Voltage(RGS=1M) Gate-Source(GND) Voltage Drain Current Pulsed (1) Symbol VDGR VGS IDM ID ID (2) Value 650 ±30 48 12 8.4 25(785) 30 -0.3 to VCC -0.3 to 8 160 1.28 +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 = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current (Energy Maximum Supply Voltage Input Voltage Range Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. KA5S1265 Drain-Gate