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RT9728BLGQW
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Product Detailed Parameters
- Description：IC PWR SWITCH P-CHAN 1:1 6WDFN
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：USB Switch
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：P-Channel
- Interface：On/Off
- Voltage - Load：2.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：1.8A
- Rds On (Typ)：120mOhm
- Input Type：Non-Inverting
- Features：-
- Fault Protection：Current Limiting (Adjustable), Over Temperature, Reverse Current, UVLO
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Supplier Device Package：6-WDFN (2x2)
- Package / Case：6-WDFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The RT9728BLGQW is a single-channel P-MOSFET high-side power switch IC designed for USB applications. It operates with a load voltage range of 2.5 V to 5.5 V and supports a maximum output current of 1.8 A. The device features a typical on-resistance (Rds(on)) of 120 mΩ. Key protection mechanisms include adjustable current limiting, over-temperature shutdown, reverse current blocking, and under-voltage lockout (UVLO). It is housed in a compact 6-WDFN (2x2 mm) package with an exposed pad for thermal dissipation.
Feature Summary
- Integrates a P-channel MOSFET with programmable current limit control for precise load management.
- Provides comprehensive fault protection including over-temperature shutdown and reverse current blocking.
- Features low on-resistance to minimize conduction losses and improve system efficiency.
- Operates without a separate supply voltage, simplifying circuit design.
Applications
- USB port power switching and distribution
- Portable electronic device power management
- Battery-powered equipment load control
Procurement Notes
Verify the specific suffix 'BLGQW' against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the procurement source provides valid RoHS compliance documentation. Confirm that the 6-WDFN package dimensions match the target PCB footprint requirements before finalizing orders.
Selection Notes
Select this component when a single-channel high-side switch with adjustable current limiting is required for low-voltage USB applications. Consider the 120 mΩ on-resistance for thermal performance at 1.8 A loads. Evaluate the 6-WDFN package size against available board space. Verify that the operating temperature range meets the environmental conditions of the end application.
Part Context
This part belongs to the Richtek RT9728 series of power distribution switches. These devices are engineered as cost-effective solutions for managing power in USB-based systems. The series typically offers integrated protection features to safeguard both the host and connected peripherals from electrical faults.
Replacement Considerations
The RT9728BHGQW is a documented variant within the same family. Verify if the 'H' suffix indicates any functional or packaging differences compared to the 'BLGQW' version before substitution. Cross-reference pinouts and electrical specifications to ensure compatibility.
