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RT6576B - Dual-Channel Synchronous DC/DC Step-Down Controller

Download the RT6576B datasheet PDF. This datasheet also covers the RT6576A variant, as both devices belong to the same dual-channel synchronous dc/dc step-down controller family and are provided as variant models within a single manufacturer datasheet.

Description

The RT6576A/B is a dual-channel step-down controller generating supply voltages for battery-powered systems.

It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators.

Features

  • include on-board power-up sequencing, a powergood output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown. A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient. For maximizing power efficiency, the RT6576A/B automatically switches to the diode-emulation mode in light load.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RT6576A-Richtek.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RT6576B
Manufacturer Richtek
File Size 305.63 KB
Description Dual-Channel Synchronous DC/DC Step-Down Controller
Datasheet download datasheet RT6576B Datasheet

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Other Datasheets by Richtek

Part Number Description
RT6576A Dual-Channel Synchronous DC/DC Step-Down Controller
RT6576C Dual-Channel Synchronous DC/DC Step-Down Controller
RT6576D Dual-Channel Synchronous DC/DC Step-Down Controller
RT6576E Dual-Channel Synchronous DC/DC Step-Down Controller
RT6575 Dual-Channel Synchronous DC-DC Step-Down Controller

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
Sample & Buy ® RT6576A/B Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs General Description The RT6576A/B is a dual-channel step-down controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA. The RT6576A/B has an oscillator output to drive the external charge pump application. Other features include on-board power-up sequencing, a powergood output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown.
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