General Description

The RT8026 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 2.7V to 5.5V, the RT8026 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/Low Dropout 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.

Features

• Input Voltage Range : 2.7V to 5.5V

• Adjustable Output Voltage : 1V to VIN

• Output Current : 1A

• High Efficiency : up to 95

• No Schottky Diode Required

• 1.5MHz Fixed Frequency PWM Operation

• Current Limiting Protection

• Thermal Shutdown Protection

• Small MSOP-10 Package

• RoHS Compliant and Halogen Free

Applications

• Mobile Phones

• Personal Information Appliances

• Wireless and DSL Modems

• MP3 Players

• Portable Instruments