Description
ADV AD4021 2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop General .
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 excelle.
Features
* Wide 4.5V to 40V Input Voltage Range
* Output Adjustable from 1.235V to 37V
* Minimum Drop Out 1.5V
* Fixed 150kHz Switching Frequency
* 2A Constant Output Current Capability
* Internal Optimize Power Transistor
* Excellent line and load regulation
* TTL shutdown ca
Applications
* Car Charger
* Battery Charger
* LED Constant Current Driver
Figure1. Package Type of AD4021
1/6
www. advsemi. com
Ver.0.10
ADV
Pin Configurations
SW
1
8
VIN
SW
2
7
VIN
AD4021
GND
3
6
EN
FB
4
5
CS
AD4021
Figure2. Pin Configuration of AD4021 (Top View)
Table 1 Pin