Data Sheet
1.5MHz, 2.5A, Step-down DC-DC Converter
AP3432
General Description
The AP3432 is a high efficiency step-do...
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...