AP3406A Datasheet | BCD Semiconductor

Data Sheet 1.1MHz, 800m A SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A General Description The AP3406A is a 1.1MHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 800m A 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 AP3406A. This feature greatly simplifies the design of switch-mode power supplies. This IC is available in TSOT-23-5, MSOP-10 and DFN-2×2-6(1) packages. Features - - - - - - - - - - High Efficiency: up to 95% Output Current: 800m A 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 Wi Fi Card Portable Media Player Digital Still and Video Cameras TSOT-23-5 MSOP-10 DFN-2×2-6(1) Figure 1. Package Types of AP3406A Feb. 2013 Rev. 1. 5 1 BCD Semiconductor Manufacturing Limited Data Sheet 1.1MHz, 800m A SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A Pin Configuration KT Package TSOT-23-5 MM Package MSOP-10 DN Package DFN-2×2-6(1) P in 1 Mark EN GND SW 1 2 3 VIN NC...