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RT8205B - Main Power Supply Controllers

Download the RT8205B datasheet PDF. This datasheet also covers the RT8205A variant, as both devices belong to the same main power supply controllers family and are provided as variant models within a single manufacturer datasheet.

Description

The RT8205A/B/C dual step-down, switch-mode powersupply controller generates logic-supply voltages in battery-powered systems.

The RT8205A/B/C includes two pulse-width modulation (PWM) controllers fixed at 5V/ 3.3V or adjustable from 2V to 5.5V.

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 RT8205A/B/C 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 r.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RT8205A_Richtek.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RT8205B
Manufacturer Richtek
File Size 580.30 KB
Description Main Power Supply Controllers
Datasheet download datasheet RT8205B Datasheet

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Other Datasheets by Richtek

Part Number Description
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RT8205M Main Power Supply Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
® RT8205A/B/C High Efficiency, Main Power Supply Controllers for Notebook Computers General Description The RT8205A/B/C dual step-down, switch-mode powersupply controller generates logic-supply voltages in battery-powered systems. The RT8205A/B/C includes two pulse-width modulation (PWM) controllers fixed at 5V/ 3.3V or adjustable from 2V to 5.5V. An alternative LGATE1 output LG1_CP can be used for external charge pump (RT8205B). And an optional external charge pump can be monitored through SECFB (RT8205C). This device also 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.
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