Texas Instruments TPS62005DGSR

Description
The TPS6200x family of low-noise synchronous step-down DC-DC converters is designed for systems powered by a 1-cell Li-ion battery or a 2- to 3-cell NiCd, NiMH, or alkaline battery. The devices operate typically down to an input voltage of 1.8 V, with a specified minimum input voltage of 2 V.

Features
High-efficiency synchronous step-down converter with greater than 95% efficiency
2 V to 5.5 V operating input voltage range
Adjustable output voltage range from 0.8 V to V1
Fixed output voltage options available in 0.9 V, 1 V, 1.2 V, 1.5 V, 1.8 V, 1.9 V, 2.5 V, and 3.3 V
Synchronizable to external clock signal up to 1 MHz
Up to 600 mA output current
Pin-programmable current limit
High efficiency over a wide load current range in power save mode
100% maximum duty cycle for lowest dropout
Low-noise operation antiringing switch and PFM/PWM operation mode
Internal softstart
50-μA quiescent current (TYP)
Available in the 10-pin Microsmall Outline Package (MSOP)
Evaluation module available

Applications
Low-power CPUs and DSPs
Cellular phones
Organizers, PDAs, and handheld PCs
MP-3 portable audio players
Digital cameras
USB-based DSL modems and other network interface cards