Features

?  Up to 94% Efficiency

?  Current Mode Operation for Excellent Line and Load Transient Response

?  Up to 700mA Load Current

?  Low Quiescent Current (one Channel) : 200μA

?  Output Voltage: 0.6V 5.5V

?  Automatic PWM/PFM Mode Switching

?  No Schottky Diode Required

?  1.4MHz Constant Frequency Operation

?  Short-Circuit Protection

?  Shutdown Quiescent Current: < 1μA

?  DFN3*3-10L Package

Description

The HX1006 is a high efficiency synchronous, dual channel PWM step-down DC/DC converter working under an input voltage range from 2.5V to 5.5V. It integrates two PWM synchronous step-down DC-DC converters. 100% duty cycle capability extends battery life in portable devices, while the quiescent current (one channel) is 200μA with no load, and drops to <1μA in shutdown.

Each DC-DC converter has independent enable input and short-circuit protection allowing versatile power sequence combination.

The HX1006 converters are available in the industry standard DFN3*3-10L packages (or upon request).

Applications

?  Digital cameras and MP3

?  Palmtop computers / PDAs

?  Cellular phones

Typical Application Circuit

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