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A6902D 数据表(PDF) 1 Page - STMicroelectronics |
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A6902D 数据表(HTML) 1 Page - STMicroelectronics |
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1 / 12 page ![]() November 2007 Rev 2 1/12 12 A6902D Up to 1A step down switching regulator with adjustable current limit for automotive applications Features ■ Qualified following the AEC-Q100 requirements (temperature Grade 3), see PPAP for more details. ■ Temperature range -40°C to 85°C ■ Up to 1A DC output current ■ Operating input voltage from 8V to 36V ■ Output voltage adjustable from 1.235V to 35V ■ Precise 3.3V (±2%) reference voltage ■ 250kHz Internally fixed frequency ■ Voltage feedforward ■ Zero load current operation ■ Internal current limiting ■ Protection against feedback disconnection ■ Thermal shutdown Applications ■ Dedicated to automotive applications ■ Adjustable current generator ■ Simple step-down converters with adjustable current limit Figure 1. Typical application Description The A6902D is a complete and simple step down switching regulator with adjustable current limit, capable to deliver up to 1A at output voltages from 1.2V to 35V. The internal robust P-channel DMOS transistor with a typical of 250m Ω assures high efficiency and a minimum dropout even at high output current level. The internal fixed switching frequency of 250kHz, and the SO-8 package pin allow to built an ultra compact DC/ DC converter with a minimum board space. SO-8 R1 5.6kO R2 3.3kO R3 5.1kO Rsense 100mO C1 10µF 35V C2 22nF C3 220pF C4 100µF 10V L1 22µH D1 STPS340U L6902D VCC VREF COMP GND FB OUT CS+ CS- VIN=8V to 36V VOUT=3.3V VIN=8V to 36V R1 5.6kO R2 3.3kO R3 5.1kO Rsense 100mO C1 10µF 35V C2 22nF C3 220pF C4 100µF 10V L1 22µH D1 STPS340U L6902D VCC VREF COMP GND FB OUT CS+ CS- VIN=8V to 36V VOUT=3.3V VIN=8V to 36V www.st.com |
类似零件编号 - A6902D |
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类似说明 - A6902D |
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