The RT8099/A is a Pulse-Width-Modulated (PWM) DC/
DC step-down converter, and is capable of delivering 0.6A
output current over a wide input voltage range from 2.7V
to 5.5V. The RT8099/A is ideally suited for portable
electronic devices that are powered from 1-cell Li-ion
battery such as cellular phones, PDAs and handyterminals.
Internal synchronous rectifier with low RDS(ON)
dramatically reduces conduction loss at PWM mode. No
external schottky barrier diode is required in practical
application.
The RT8099/A enters low-dropout mode when normal
PWM cannot provide regulated output voltage by
continuously turning on the high-side P-MOSFET.
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