RT8223B - Main Power Supply Controller

Product Overview

Richtek

Part number	RT8223B
Manufacturer	Richtek
File Size	449.63 KB
Description	Main Power Supply Controller
Datasheet	RT8223B Datasheet
Note	This datasheet PDF includes multiple part numbers: RT8223B, RT8223A. Please refer to the document for exact specifications by model.
Additional preview pages of the RT8223B datasheet.

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

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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Published: Jan 28, 2013 |