AD4021
Description
The AD4021 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external ponents, the regulator is simple to use and include internal frequency pensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function is built inside. An internal pensation block is built in to minimize external ponent count.
Features
- Wide 4.5V to 40V Input Voltage Range
- Output Adjustable from 1.235V to 37V
- Minimum Drop Out 1.5V
- Fixed 150k Hz Switching Frequency
- 2A Constant Output Current Capability
- Internal Optimize Power Transistor
- Excellent line and load regulation
- TTL shutdown capability
- ON/OFF pin with hysteresis function
- With output constant current loop
- Built in thermal shutdown function
- Built in current limit...
