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RT9728ALZQW
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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)：1.3A
- Rds On (Typ)：120mOhm
- Input Type：Non-Inverting
- Features：Status Flag
- Fault Protection：Current Limiting (Adjustable), Over Temperature, UVLO
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：6-WDFN (2x2)
- Package / Case：6-WDFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The RT9728ALZQW is a single P-channel high-side power switch IC designed for USB applications. It features a low on-resistance of 120 milliohms and supports an output current up to 1.8 amperes with an adjustable current limit ranging from 75 milliamperes to 1.8 amperes. The device operates within a supply voltage range of 2.5 volts to 5.5 volts and functions reliably across temperatures from -40°C to +85°C. Packaged in a compact 6-WDFN exposed pad format, it integrates protection mechanisms suitable for portable electronics and battery-powered systems requiring efficient power distribution.
Feature Summary
- Integrates a single P-MOSFET high-side switch optimized for USB load management
- Provides adjustable current limiting capability to protect downstream circuits
- Features low on-resistance for improved power efficiency and reduced heat generation
Applications
- USB power distribution switches
- Portable electronic devices
- Battery-powered load management systems
Procurement Notes
Verify the specific suffix ZQW against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the selected variant matches the required current limit adjustment range and operating temperature grade for your design. Cross-reference the RoHS compliance status with the latest production documentation before finalizing procurement orders.
Selection Notes
Select this component when a single-channel high-side switch with adjustable current limiting is required for USB or similar low-voltage applications. Compare the 120 milliohm on-resistance and 1.8 ampere maximum current rating against system load requirements. Consider the 6-WDFN package constraints for PCB layout and thermal dissipation needs relative to alternative SOT-23-6 options.
Part Context
This part belongs to the Richtek RT9728 series of power distribution switches. The series includes variants such as RT9728AHGE and RT9728BHGE, which share similar functional characteristics but differ in package types like SOT-23-6. The ALZQW designation specifically denotes the WDFN-6 package configuration, distinguishing it from other form factors within the same product family.
Replacement Considerations
Direct substitutes include RT9728AHGE and RT9728BHGE if the SOT-23-6 package is acceptable. Verify pin compatibility and electrical parameters before swapping packages. No other direct pin-to-pin replacements are confirmed in public documentation.
