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RT8228BGQW
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 12WQFN
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, On Time Control, Phase Control, Power Good
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：12-WFQFN Exposed Pad
- Supplier Device Package：12-WQFN (2x2)
- Grade：-
- Qualification：-
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Overview
The RT8228BGQW is a single synchronous buck PWM controller manufactured by Richtek USA Inc. It operates with an input voltage range of 4.5V to 5.5V and provides an adjustable output voltage starting from 0.5V. The device utilizes a compact 12-WQFN (2x2mm) package for surface mount installation. Designed for low voltage applications, it supports efficient step-down DC-DC conversion suitable for powering sensitive digital loads.
Feature Summary
- Single synchronous buck topology for efficient power conversion
- Adjustable output voltage capability down to 0.5V
- Compact 12-WQFN package design for space-constrained PCBs
Applications
- CPU core voltage regulation
- Chipset power supply
- DRAM memory power delivery
Procurement Notes
Verify the specific suffix 'BGQW' against the manufacturer's current datasheet to confirm pinout and thermal pad configuration. Ensure the source document explicitly lists this part as active or obsolete, as availability status may vary by region. Cross-reference the WQFN-12L footprint dimensions with your PCB library before finalizing procurement orders.
Selection Notes
Select this component when designing systems requiring a single-phase buck solution for low-voltage rails such as CPU cores or chipsets. The wide input voltage range accommodates standard 5V systems. Consider the thermal performance of the 12-WQFN package relative to the expected load current and ambient operating conditions within the target enclosure.
Part Context
Richtek Technology Corporation specializes in power management integrated circuits for consumer electronics, telecommunications, and industrial automation. The RT8228 series addresses the demand for high-efficiency, small-footprint regulators in portable devices and computing platforms where precise voltage control and minimal board space are critical requirements.
Replacement Considerations
Public sources indicate that the RT8228BGQW is obsolete and no longer manufactured. Designers should consult official substitution guides for compatible alternatives. Verify that any replacement maintains the same 12-WQFN footprint and electrical specifications to ensure mechanical and functional compatibility.
