RT9728BLGE

Description：IC PWR SWITCH P-CHAN 1:1 SOT23-6
Series：-
Mfr：Richtek USA Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:aa8dbe3df25d Category: Power Distribution Switches, Load Drivers Brand: Richtek USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC PWR SWITCH P-CHAN 1:1 SOT23-6
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：SOT-23-6
Package / Case：SOT-23-6
Grade：-
Qualification：-

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RT9728BLGE

Overview

The RT9728BLGE is a single-channel P-Channel power distribution switch from Richtek USA Inc., housed in an SOT-23-6 surface-mount package. It operates within a voltage range of 2.5V to 5.5V and supports a maximum output current of 1.3A with a typical on-resistance of 120mΩ. The device features a programmable current limit adjustable between 75mA and 1.3A, alongside comprehensive fault protection including over-temperature, reverse current, and under-voltage lockout. It functions as a high-side switch with an active-low control interface.

Feature Summary

Programmable current limiting capability for flexible load protection
Integrated reverse current blocking to prevent backflow
Active-low logic interface for straightforward system integration

Applications

USB port power switching and protection
Peripheral device power distribution
Battery-powered equipment load management

Procurement Notes

Verify the specific suffix 'BLGE' against official Richtek documentation to confirm the 1.3A current rating and programmable limit configuration. Ensure the ordering part number matches the required thermal and electrical specifications for your design. Cross-reference datasheet revisions to confirm pinout compatibility and feature sets before finalizing procurement.

Selection Notes

Select this component when a compact high-side switch with adjustable current limits is required. It is suitable for applications needing precise load protection without external sensing components. Consider the SOT-23-6 footprint constraints and the 1.3A continuous current capability relative to the expected load profile and ambient temperature conditions.

Part Context

This device belongs to the RT9728 family of power switches, which includes variants like the RT9728BHGE (1.8A fixed limit) and RT9728AHGE (1.3A programmable). The BLGE variant specifically offers the 1.3A programmable current limit option, providing design flexibility compared to fixed-limit counterparts within the same series.

Replacement Considerations

The TPS2552DBVR from Texas Instruments is a documented alternative offering similar programmable current limit functionality in a comparable small outline package.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.