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KA78R09 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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KA78R09 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 8 page ©2001 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.1 Features • 1A / 9V Output low dropout voltage regulator • TO220 Full-Mold package (4PIN) • Overcurrent protection, Thermal shutdown • Overvoltage protection, Short-Circuit protection • With output disable function Description The KA78R09 is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant volt- age power source with TO-220 4 lead full mold package. Dropout voltage of KA78R09 is below 0.5V in full rated current(1A). This regulator has various function such as peak current protection, thermal shut down, overvoltage pro- tection and output disable function. TO-220F-4L 1. Vin 2. Vo 3. GND 4. Vids 1 Internal Block Diagram THERMAL SHUTDOWN BANDGAP REFERENCE OVERVOLTAGE PROTECTION SOA PROTECTION SHORTCIRCUIT PROTECTION 1 4 3 2 Vin Vdis Vo GND HIGH / LOW OUTPUT ON / OFF Q1 R1 R2 - + - + 1.4V SHORT-CIRCUIT KA78R09 Low Dropout Voltage Regulator |
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