BCD Semiconductor Manufacturing Limited AP3422
The AP3422 contains two independent 1.1MHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converters, each of them is capable of driving a 800mA load with high efficiency, excellent line and load regulation. Each converter integrates a main switch and a synchronous switch without an external Schottky diode. It is ideal for powering portable equipment that runs from a single Li-ion battery.| Part No. | AP3422 |
|---|---|
| Datasheet | AP3422 Download |
| Manufacturer |  BCD Semiconductor Manufacturing Limited |
| Description | 800mA Synchronous DC-DC Buck Converter |
| Buy | Stock & Price |
GENERAL DESCRIPTION
A standard series of inductors are available from several different manufacturers optimized for use with the AP3422. This feature greatly simplifies the design of switch-mode power supplies. This IC is available in DFN-3×3-10 package.FEATURES
● High Efficiency: up to 95%● Output Current on Each Channel: 800mA
● Input Voltage Range: 2.5V to 5.5V
● Fixed 1.1MHz Frequency
● 100% Duty Cycle in Dropout
● Built-in Short Circuit Protection
● Built-in Thermal Shutdown Function
● Built-in Current Limit Function
● Shutdown Current: <1µA
APPLICATIONS
● GPS● WiFi Card
● Portable Media Player
● Digital Still and Video Cameras Feb. 2013 Rev. 1. 2 DFN-3×3-10 Figure 1. Package Type of AP3422 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet Dual 1.1MHz, 800mA Synchronous DC-DC Buck Converter Pin Configuration DN Package (DFN-3×3-10) Pin 1 Mark AP3422 1 10 29 38 47 56 Pin
DESCRIPTION
Figure 2. Pin Configuration of AP3422 (Top View) Pin Number Pin Name Function Channel 1 enable control input.
