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AP3406 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP3406 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 2 page  Product Brief 1.1MHz, 650mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406 Jun. 2008 BCD Semiconductor Manufacturing Limited 1 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: <1 µA Applications • GPS • WiFi Card • Portable Media Player • Digital Still and Video Cameras Parametric Table Input Voltage Range (V) 2.5 to 5.5 Maximum Output Current (Min) (mA) 650 Feedback Voltage (V) 0.6 Oscillator Frequency (MHz) 1.1 VIN=4.2V, VOUT=3.3V 95 Efficiency @200mA (%) VIN=3.6V, VOUT=1.8V 92 Benefits • High Efficiency • High Output Current • Easy to Use Additional Available Materials • Samples • Preliminary Datasheet • Demo Board • Demo Board Manual • Application Note • ESD Report |
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