A7642

AiT Semiconductor Inc. www.ait-ic.com A7642 DC-DC CONVERTER/BOOST (STEP-UP) 1MHz, 2A PWM REGULATOR DESCRIPTION A7642 is an asynchronous PWM boost converter using a constant frequency peak current mode. An external Schottky diode is needed. At light load, A7642 works in the light load mode. The supply current during the light mode is 100uA , together with the 200mΩ internal NMOS power transistor guarantees high efficiency in the whole output load current range. Up to 2A peak current, Let A7642 can provide 1A output load current, which is suitable to use as MID and mobile power supply. The input voltage 3V~25V.The operating frequency is internally set at 1MHz. The A7642 is available in SOT-26 package. FEATURES  High Efficiency: Up to 92%  1.0MHz Constant Switching Frequency  Switch current up to 2A  Low RDS(ON): 0.2Ω  Accurate Reference:0.6V  Tiny External Components  Available in SOT-26 Package APPLICATION  WLED Drivers  Networking cards powered from PCI or PCI-express slots  MID and Mobile Power TYPICAL APPLICATION ORDERING INFORMATION Package Type Part Number SOT-26 A7642E6R E6 A7642E6VR V: Halogen free Package Note R: Tape & Reel SPQ: 3,000/pcs AiT provides all RoHS products Suffix “ V “ means Halogen free Package Figure 1. Basic Application Circuit with A7642 REV1.0 - JUN 2014 RELEASED - -1- AiT Semiconductor Inc. www.ait-ic.com PIN DESCRIPTION A7642 DC-DC CONVERTER/BOOST (STEP-UP) 1MHz, 2A PWM REGULATOR Pin # 1 2 3 4 5 6 Symbol SW GND FB SH...