RT8223A Datasheet Main Power Supply Controller

Manufacturer: Richtek

Overview: RT8223A/B High Efficiency, Main Power Supply Controller for Notebook.

Datasheet Details

Part number	RT8223A
Manufacturer	Richtek
File Size	449.63 KB
Description	Main Power Supply Controller
Datasheet	RT8223A_Richtek.pdf

General Description

The RT8223A/B dual step-down, switch-mode powersupply controller generates logic-supply voltages in battery-powered systems.

The RT8223A/B includes two pulse-width modulation (PWM) controllers fixed at 5V/ 3.3V or adjustable from 2V to 5.5V.

This device also

Key Features

2 linear regulators providing fixed 5V and 3.3V outputs. The linear regulator each provides up to 70mA output current with automatic linear-regulator bootstrapping to the PWM outputs. The RT8223A/B includes on-board power-up sequencing, the power good output, internal softstart, and internal soft-discharge output that prevents negative voltages on shutdown. A constant on-time PWM control scheme operates without sense resistor and provides 100ns response to load transients while maintaining a rel.

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