RT9992ZQW

Overview

The RT9992ZQW is a 5+2 channel integrated Power Management IC (PMIC) designed for Digital Video (DV) applications. It integrates five DC/DC converters: one synchronous step-up, one selectable synchronous step-up/step-down, two synchronous step-downs, and one WLED driver configurable as an asynchronous step-up or current source based on the VOUT6 initial voltage. Additionally, it includes two Low Dropout (LDO) regulators: one Real-Time Clock (RTC) LDO and one generic LDO with selectable internal feedback for a fixed 2.5V output or external feedback for custom voltages. Both low-voltage synchronous boost converters feature load disconnect functionality. All power MOSFETs and compensation networks are integrated internally.

Feature Summary

• Integrates five DC/DC converters and two LDO regulators in a single package for DV applications
• Features flexible control allowing channels CH1 to CH5 to be enabled independently or via preset sequences
• Includes a power good indicator to monitor the status of FB2, FB3, and FB4 voltage states
• Provides configurable WLED driver operation selectable between asynchronous step-up and current source modes

Applications

• Digital Video (DV) devices
• Portable video recording equipment
• Integrated camera modules requiring multi-rail power management

Procurement Notes

Verify the specific suffix ZQW against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Ensure the component matches the required automotive or industrial temperature ratings if applicable, as standard versions may differ. Confirm RoHS compliance status through the official Richtek Technology documentation before finalizing procurement specifications.

Selection Notes

Select this PMIC when a compact solution for digital video systems is required, consolidating multiple power rails into one component. The device is suitable for designs needing both high-efficiency switching regulators and precise LDO outputs. Consider the integrated WLED driver capability if backlighting control is necessary within the same power architecture.

Part Context

The RT9992 belongs to Richtek's portfolio of integrated power management solutions tailored for consumer electronics. As a multi-channel PMIC, it simplifies board space constraints by replacing discrete components. The ZQW designation typically refers to the specific WDFN32 package variant used for this integration level.

FAQ

How is the WLED driver mode determined?

The WLED driver operates in either asynchronous step-up or current source mode, which is selectable based on the initial voltage at the VOUT6 pin.

Can the generic LDO output voltage be customized?

Yes, the generic LDO can utilize an external feedback loop for customized output voltages or an internal feedback loop for a fixed 2.5V output.