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RT8811BGQW
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Product Detailed Parameters
- Description：IC PWM CTRLR BUCK WQFN-24
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 13.2V
- Frequency - Switching：150kHz ~ 600kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Phase Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-WQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The RT8811BGQW is a synchronous buck PWM controller manufactured by Richtek USA Inc. It operates within an input voltage range of 4.5V to 5.5V and provides four adjustable output channels with voltages ranging from 400mV to 2.5V. The device supports switching frequencies between 100kHz and 1MHz, delivering up to 1.5A per phase. It features a maximum duty cycle of 80% and functions reliably across temperatures from -40°C to +85°C. The component is housed in a compact 24-WQFN (4x4) package.
Feature Summary
- Integrated dual-phase synchronous buck architecture for efficient power conversion
- Adjustable switching frequency allows optimization for size and performance
- Supports multiple low-voltage outputs suitable for CPU core regulation
Applications
- CPU core voltage regulation
- DDR memory power supply systems
- General-purpose DC-DC step-down conversion
Procurement Notes
Verify the specific suffix against official datasheets to confirm pinout and thermal pad configurations. Ensure compatibility with existing PCB footprints before integration. Confirm moisture sensitivity levels and reflow soldering profiles to prevent damage during assembly. Cross-reference ordering information with authorized distributors to avoid counterfeit components.
Selection Notes
Select this controller for designs requiring multi-output low-voltage regulation from a standard 5V rail. Evaluate the required current load against the 1.5A per phase limit. Consider the operating temperature range to ensure reliability in the target environment. Verify that the external inductor and capacitor selections support the chosen switching frequency.
Part Context
This component belongs to the Richtek RT8811 series of power management ICs. It is designed as a dedicated switch controller for high-efficiency DC-DC applications. The series targets portable electronics and computing hardware where space constraints and thermal efficiency are critical design factors.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for direct replacements or compatible alternatives.
