The RT8099 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 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 enters low-dropout mode when normal PWM
cannot provide regulated output voltage by continuously
turning on the high-side P-MOSFET. The RT8099 enters
shut-down mode and consumes less than 0.1μA when
the EN pin is pulled low. The switching ripple is easily
smoothed-out by small package filtering elements due to
1.5MHz high switching frequency. Other features include
soft-start, auto discharge, lower internal reference voltage,
over-temperature protection, and over-current protection.
The RT8099 is available in the small UDFN-6L 1.6x1.6
package for saving PCB space.资料下载
