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AP3422DNTR-G1 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited

Part # AP3422DNTR-G1
Description  Dual 1.1MHz, 800mA Synchronous DC-DC Buck Converter
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Manufacturer  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Direct Link  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited

AP3422DNTR-G1 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited

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Preliminary Datasheet
Dual 1.1MHz, 800mA Synchronous DC-DC Buck Converter
AP3422
Sep. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
1
General Description
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.
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: <1
μA
Applications
•
GPS
•
WiFi Card
•
Portable Media Player
•
Digital Still and Video Cameras
Figure 1. Package Type of AP3422
DFN-3×3-10


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