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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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