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RT8203

Richtek
Part Number RT8203
Manufacturer Richtek
Description Main Power-Supply Controllers
Published Jun 9, 2014
Detailed Description RT8203 High-Efficiency, Quad Output, M ain Power- Supply Controllers for Notebook Computers General D escription The RT8...
Datasheet PDF File RT8203 PDF File

RT8203
RT8203

Overview
RT8203 High-Efficiency, Quad Output, M ain Power- Supply Controllers for Notebook Computers General D escription The RT8203 dual step-down, switch-mode power-supply (SMPS) controllers generate logic-supply voltages in battery-powered systems.
The RT8203 include two pulsewidth modulation (PWM) controllers, adjustable from 2V to 5.
5V or fixed at 5Vand 3.
3V .
These devices feature two linear regulators providing 5V and 3.
3V always-on outputs.
Each linear regulator provides up to 100mA output current with automatic linear regulator bootstra pping to the main SMPS outputs.
The RT8203 include on-board power-up sequencing, a power-good (PGOOD) output, internal softstart, and soft-shutdown output discharge that prevents negative voltage s on shutdown.
RichTek's proprietary Mach-PWMTM “ instant-on” response, con stant on-time PWM control scheme operates without sense resistors and provides 100n s respon se to loa d transients while maintaining a relatively con stant switching frequency .
The un...


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