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AP1509 Arkusz danych(PDF) 2 Page - Diodes Incorporated |
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AP1509 Arkusz danych(HTML) 2 Page - Diodes Incorporated |
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2 / 13 page ![]() AP1509 150KHz, 2A PWM BUCK DC/DC CONVERTER AP1509 Document number: DS31016 Rev. 4 - 2 2 of 13 www.diodes.com June 2010 © Diodes Incorporated Typical Application Circuit (1) Fixed Type Circuit 12 8 4 3 12V DC Input CIN Capacitor FB SD D1 Schottky Diode VIN GND Output AP1509- 33 Co Capacitor Inductor L1 47uH 3.3V/2A Output Load GND GND GND 56 7 (2) Adjustable Type Circuit 12 8 4 3 12V DC Input CIN Capacitor FB SD D1 Schottky Diode VIN GND Output AP1509 Co Capacitor Inductor L1 39uH 2.5V/2A Output Load GND GND GND 56 7 R1 1K R2 1K VOUT = VFB × (1 + R2 R1 ) VFB = 1.23V R2 = 1K ~ 3K (3) Delay Start Circuit 12 8 4 3 12V DC Input CIN Capacitor FB SD D1 Schottky Diode VIN GND Output AP1509 Co Capacitor Inductor L1 39uH 2.5V/2A Output Load GND GND GND 56 7 R1 1K R2 1K CDELAY 0.1uF 10K RDELAY |
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