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HX1001D
Synchronous Buck DC/DC Converter
Feature
Up to 95% Efficiency
Current Mode Operation for Excellent Line and Load Transient Response
1.2A Output Current
Low Quiescent Current: 300μA
Output Voltage: 0.6V ～ 5.5V
Automatic PWM/PFM Mode Switching
No Schottky Diode Required
Frequency Operation: 1.3MHz
Short-Circuit Protection
Shutdown Quiescent Current: <1μA
Low Profile SOT-23-5L Package (lead-free packaging is now available)
Application
Car Charger / Adaptor
Pre-Regulator for Linear Regulators
Distributed Power Systems
Battery Charger
Description
The HX1001D is high efficiency synchronous, PWM step-down DC/DC converters working under an input voltage range from 2.2V to 5.5V. This feature makes the HX1001D suitable for single Li-Lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 300μA with no load, and drops to <1μA in shutdown.
The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1.3MHz switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint.
The HX1001D converters are available in the industry standard SOT-23-5L power packages (or upon request)
Typical Application Circuit
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