Products > Integrated Circuits (ICs) > Power Management ICs > RT9728AHZQW
  • RT9728AHZQW

Images are for reference only.


Hot Sale

Power Switch, Programmable Current Limit, High Side, Active High, 1 Output, 5.5V, 1.295A, WDFN-6

  • Package/Case :
  • WDFN-6L
  • Product Categories :
  • Hot Swap & Power Distribution
  • RoHs Status:
  • Lead free / RoHS Compliant
  • Marking Code:
  • 17x
  • In-stock:
  • 3000


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

RT9728AHZQW Product Details

The RT9728AHZQW is a cost effective, low voltage, single P-MOSFET high side power switch IC for USB application with a programmable current limit feature. Low switch-on resistance (typ.120mΩ) and low supply current (typ. 120μA) are realized in this IC.The RT9728AHZQW can offer a programmable current limit threshold between 75mA and 1.3A (typ.) via an external resistor. The ±10% current limit accuracy can be realized for all current limit settings. Besides, a flag output is available to indicate fault conditions to the local USB controller. Furthermore, the chip also integrates an embedded delay function to prevent mis-operation from happening due to high inrush current. The RT9728AHZQW is an ideal solution for USB power supply and can support flexible applications since it is functional for various current limit requirements. It is available in WDFN-6L 2x2 package.


  • ±10% Current Limit Accuracy @ 1.3A
  • Adjustable Current Limit : 75mA to 1.3A (typ.)
  • Meets USB Current Limiting Requirements
  • Operating Voltage Range : 2.5V to 5.5V
  • Reverse Input - Output Voltage Protection
  • Built-in Soft-Start
  • 120mΩ High Side MOSFET
  • 120μA Supply Current
  • RoHS Compliant and Halogen Free


  • USB Bus/Self Powered Hubs
  • USB Peripheral Ports
  • ACPI Power Distribution
  • Battery Power Equipment
  • 3G/3.5G Data Card, Set-Top Boxes

RT9728AHZQW Block Diagram
(Picture: Diagram)

Technical Parameters

  • Switch Type
  • USB Switch
  • Number of Outputs
  • 1
  • Ratio Input:Output
  • 1:1
  • 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)
  • Package / Case
  • 6-WDFN Exposed Pad
  • Supplier Device Package
  • 6-WDFN (2x2)

RT9728AHZQW Documents

RT9728AHZQW Related Products

Ratings and Reviews

  • 0 / 5
  • 5 Stars 0%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Jan 30 - Feb 04 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that RT9728AHZQW is the original manufacturer or agent of RICHTEK?
We have a professional business development department to strictly test and verify the qualifications of RICHTEK original manufacturers and agents. All RICHTEK suppliers must pass the qualification review before they can publish their RT9728AHZQW devices; we pay more attention to the channels and quality of RT9728AHZQW products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of RT9728AHZQW chips? Including RICHTEK original factory information, Hot Swap & Power Distribution application, RT9728AHZQW pictures?
You can use Jotrin's intelligent search engine, or filter by Power Switch category, or find it through Richtek Technology Corporation Information page.
Q: Are the RICHTEK's RT9728AHZQW price and stock displayed on the platform accurate?
The RICHTEK's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for RT9728AHZQW, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of RT9728AHZQW?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the RT9728AHZQW we delivered, we will accept the replacement or return of the RT9728AHZQW only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of RT9728AHZQW.
(3)The RT9728AHZQW is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as RT9728AHZQW datasheet pdf, RT9728 pin diagram?
Need any After-Sales service, please feel free contact us:

Richtek Technology Corporation

Richtek is an international analog IC design company specializing in providing customers with diverse and competitive products and complete power management solutions. Since its establishment, Richtek has focused on integrating technical capabilities, adhering to quality and positive customer ser...
  • RT9711AGB
    RT9711AGB Power Load Switch, High Side, Active High, 1 Output, 5.5V, 2.5A, SOT-2...
  • RT9715AGS
    RT9715AGS DISCHARGE IC, X CAP, 1kV, 3.5uF, 8SO; Brief Features: -; Supply Voltag...
  • RT9715GGB
    RT9715GGB Power Load Switch, High Side, Active High, 1 Output, 5.5V, 1A, SOT-23-...
  • RT9724GB
    RT9724GB Power Load Switch, Slew Rate Controlled, High Side, Active High, 1 Out...
  • RT9728AHGE
    RT9728AHGE Power Load Distribution Switch IC, Active High, 1 Output, 5.5 V in, 1....
  • RT9728AHGQW
    RT9728AHGQW 120m, 1.3A Power Switch with Programmable Current Limit

Certificates & Honor

Certificates & Honor