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AP3406_09 Datasheet, PDF (1/12 Pages) BCD Semiconductor Manufacturing Limited – 1.1MHz, 650mA SYNCHRONOUS DC-DC BUCK CONVERTER | |||
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Data Sheet
1.1MHz, 650mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406
General Description
The AP3406 is a 1.1MHz fixed frequency, current
mode, PWM synchronous buck (step-down) DC-DC
converter, capable of driving a 650mA load with high
efficiency, excellent line and load regulation. The
device 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 AP3406. This feature greatly simplifies the
design of switch-mode power supplies.
This IC is available in TSOT-23-5 and SOT-23-5
packages.
Features
⢠High Efficiency: up to 95%
⢠Output Current: 650mA
⢠Input Voltage Range: 2.5V to 5.5V
⢠Fixed 1.1MHz Frequency
⢠Current Mode Control
⢠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
TSOT-23-5
SOT-23-5
Figure 1. Package Types of AP3406
Oct. 2009 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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