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RT8010B

Richtek
Part Number RT8010B
Manufacturer Richtek
Description High Efficiency PWM Step-Down DC/DC Converter
Published Aug 23, 2008
Detailed Description Preliminary RT8010B 1.5MHz, 800mA, High Efficiency PWM Step-Down DC/DC Converter General Description The RT8010B is a ...
Datasheet PDF File RT8010B PDF File

RT8010B
RT8010B

Overview
Preliminary RT8010B 1.
5MHz, 800mA, High Efficiency PWM Step-Down DC/DC Converter General Description The RT8010B is a high-efficiency Pulse-Width-Modulated (PWM) step-down DC-DC converter.
Capable of delivering 800mA output current over a wide input voltage range from 2.
5V to 4V, the RT8010B is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources such as cellular www.
DataSheet4U.
com phones, PDAs and hand-held devices.
Two operating modes are available including PWM/LowDropout autoswitch and shut-down modes.
The internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode.
No external Schottky diode is required in practical application.
The RT8010B enters Low-Dropout mode when normal PWM can not provide regulated output voltage by continuously turning on the upper PMOS.
The RT8010B enters shut-down mode and consumes less than 0.
1μA when EN pin is pulled low.
The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operating frequency of 1.
5MHz.
This along with small WDFN-8L 2x2 package provides small PCB area application.
Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.
Features +2.
5V to +4V Input Range Output Voltage (Adjustable Output From 0.
6V to VIN) 800mA Output Current 95% Efficiency No Schottky Diode Required 1.
5MHz Fixed-Frequency PWM Operation Small 8-Lead WDFN Package RoHS Compliant and 100% Lead (Pb)-Free Applications Mobile Phones Personal Information Appliances Wireless and DSL Modems MP3 Players Portable Instruments Pin Configurations (TOP VIEW) EN FB VIN LX 1 2 3 4 8 9 7 6 5 PGND PGND PGND AGND WDFN-8L 2x2 Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail.
Ordering Information RT801...


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