RICHTEK RT8010GQW

The RT8010/A is a high efficiency Pulse-Width-Modulated (PWM) step-down DC/DC converter. Capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the RT8010/A is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources such as cellular phones, PDAs and hand-held devices. Two operating modes are available including : PWM/LowDropout autoswitch and shutdown 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 RT8010/A enters Low Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper P-MOSFET. RT8010/A enter 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-6L 2x2 and WQFN-16L 3x3 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.

• 2.5V to 5.5V Input Range
• Output Voltage (Adjustable Output From 0.6V to VIN)
• RT8010: 1V, 1.2V, 1.5V, 1.6V, 1.8V, 2.5V and 3.3V Fixed/Adjustable Output Voltage
• RT8010A Adjustable Output Voltage Only
• 1A Output Current
• ±95% Efficiency
• No Schottky Diode Required
• 1.5MHz Fixed-Frequency PWM Operation
• Small 6-Lead WDFN and 16-Lead WQFN Package
• RoHS Compliant and 100% Lead (Pb)-Free

• Mobile Phones
• Personal Information Appliances
• Wireless and DSL Modems
• MP3 Players
• Portable Instruments