A7642中文資料創(chuàng)瑞科技數(shù)據(jù)手冊PDF規(guī)格書

FEATURES

? Wide input range: 3~12V, 20VOUT max

? 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

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~12V. The operating frequency is internally set at

1MHz.

The A7642 is available in SOT-26 package.