GENERAL DESCRIPTION
The PW2058/PW2059 is a c***tant frequency, current mode step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The output voltage can be regulated as low as 0.6V. The PW2058/PW2059 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.
FEATURES
- High Efficiency: Up to 96%
- 1.5MHz C***tant Frequency Operation
- 800mA Output Current
- No Schottky Diode Required
- 2V to 6V Input Voltage Range
- Output Voltage as Low as 0.6V
- PFM Mode for High Efficiency in Light Load
- 100% Duty Cycle in Dropout Operation
- Low Quiescent Current: 20μA
- Slope Compensated Current Mode Control for Excellent Line and Load Transient Resp***e
- Short Circuit Protection
- Thermal Fault Protection
- Inrush Current Limit and Soft Start
- <1μA Shutdown Current
- SOT23-5 package
APPLICATI***
- Cellular and ***art Phones
- Wireless and DSL Modems
- PDAs
- Portable Instruments
- Digital Still and Video Cameras
- DTV
