AP3432

Data Sheet 1.5MHz, 2.5A, Step-down DC-DC Converter AP3432 General Description The AP3432 is a high efficiency step-down DC-DC voltage converter. The chip operation is optimized by peak-current mode architecture with built-in synchronous power MOSFET switchers. The oscillator and timing capacitors are all built-in providing an internal switching frequency of 1.5MHz that allows the use of small surface mount inductors and capacitors for portable product implementations. Additional features including Soft Start (SS), Under Voltage Lock Out (UVLO), Thermal Shutdown Detection (TSD) and short circuit protection are integrated to provide reliable product applications. The device is available in adjustable output voltage versions ranging from 0.8V to VIN when input voltage range is from 2.7V to 5.5V, and is able to deliver up to 2.5A. The AP3432 is available in DFN-3×3-6 package. Features High Efficiency Buck Power Converter Low RDS(ON) Internal Switches : 100m Output Current: 2.5A Adjustable Output Voltage from 0.8V to VIN Wide Operating Voltage Range: 2.7V to 5.5V 4Built-in Power Switchers for Synchronous Rectification with High Efficiency Feedback Voltage Allows Output: 800mV 1.5MHz Switching Frequency Thermal Shutdown Protection Low Drop-out Operation at 100% Duty Cycle No Schottky Diode Required Input Over Voltage Protection Applications LCD TV Set Top Box Post DC-DC Voltage Regulation PDA and Notebook Computer DFN-3×3-6 Figure 1. Package Ty...