Diodes AUR9716 Manuel d'utilisateur télécharger pdf

Data Sheet

1.0MHz to 1.4MHz, 2A, STEP DOWN DC-DC CONVERTER AUR9716

Apr. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

General Description

The AUR9716 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 MOS switchers. It is

automatically switching between the normal PWM

mode and LDO mode to offer improved system

power efficiency covering a wide range of loading

conditions.

Switching frequency during 1.0MHz to 1.4MHz is set

by an external resistor and integrated soft-start (SS),

under-voltage-lock-out (UVLO), thermal shutdown

detection (TSD) and short circuit protection are

designed to provide reliable product applications.

The device is available in adjustable output voltage

versions ranging from 0.8V to V

when input

voltage range is from 2.5V to 5.5V , and is able to

deliver up to 2A.

The AUR9716 is available in DFN-3×3-8 package.

Features

• High efficiency Buck Power Converter

• Low Quiescent Current

• 2A Output Current

• Low R

DS(ON)

Internal Switches: 110mΩ

• Adjustable Output Voltage from 0.8V to V

• Wide Operating Voltage Range: 2.5V to 5.5V

• Built-in Power Switches for Synchronous

Rectification with high Efficiency

• 800mV Feedback Voltage Allows output

• Programmable Frequency: 1.0MHz to 1.4MHz

• Thermal Shutdown Protection

• Low Drop-out Operation at 100% Duty Cycle

• No Schottky Diode Required

Applications

• LCD TV

• Post DC-DC Voltage Regulation

• PDA and Notebook Computers

Figure 1. Package Type of AUR9716

DFN-3×3-8

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