‧+2.5V to +5.5V Input Range
‧Adjustable Output From 0.5V to VIN
‧1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V and 3.3V Fixed/ Adjustable Output Voltage
‧400mA Output Current
‧No Schottky Diode Required
‧1.25MHz Fixed-Frequency PWM Operation
‧Small SOT-23-5 and TSOT-23-5 Package
‧RoHS Compliant and Halogen Free
1.25MHz, 400mA, High Efficiency PWM Step-Down
‧Personal Information Appliances
‧Wireless and DSL Modems
【文字介绍】The RT8025 is a high-efficiency pulse-width-modulated (PWM) step-down DC-DC converter. Capable of delivering 400mA output current over a wide input voltage range from 2.5 to 5.5V, the RT8025 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals.
Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application. The RT8025 automatically turns off the synchronous rectifier while the inductor current is low and enters discontinuous PWM mode. This can increase efficiency at light load condition.