Products > Integrated Circuits (ICs) > RT9378AGQW
  • RT9378AGQW

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Channels 100mA x1/x1.5/x2 Charge Pump White LED Driver

  • Package/Case :
  • WQFN2X2-12
  • Product Categories :
  • LED Driver ; White LED Driver
  • RoHs Status:
  • Lead free/RoHS Compliant
  • Marking Code:
  • G1
  • In-stock:
  • 2094


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RT9378AGQW Product Details

The RT9378AGQW is a 4 CH WLED driver with auto mode selection of x1, x1.5 and x2 mode with low dropout voltage in current sources. The RT9378AGQW can power up to 4 white LEDs with regulated constant current for uniform intensity. Each channel (LED1 to LED4) can support up to 25mA. The part maintains highest efficiency by utilizing x1/x1.5/x2 fractional charge pump and low dropout current regulators. For the brightness control, user can easily use a PWM signal generated from GPIO to control the brightness of WLEDs. The RT9378AGQW is available in a WQFN-12L 2x2 package. Small 0.22μF capacitors can be used for fly capacitors. It provides the best backlighting solution with high efficiency and smallest board space for portable application.


  • Efficiency Up to 93% Over Li-ion Battery Discharge
  • Typical 85% Average Efficiency Over Li-ion Battery Discharge
  • Support Up to 4 White LEDs
  • Support Up to 25mA/Per Channel
  • Support Up to 100mA Output Current
  • PWM Brightness Control
  • 60mV Typical Current Source Dropout
  • 1% Typical LED Current Accuracy
  • 0.7% Typical LED Current Matching
  • Automatic x1/x1.5/x2 Charge Pump Mode Transition
  • Low Input Noise and EMI Charge Pump
  • 5V Over Voltage Protection
  • Power On/Mode Transition In-rush Protection
  • 1MHz Switching Frequency
  • 0.4μA Low Shutdown Current
  • RoHS Compliant and Halogen Free


  • Camera Phone, Smart Phone
  • White LED Backlighting
  • Mobile Phone
  • Tablet, Notebook, Pad

RT9378AGQW Block Diagram
(Picture: Diagram)

Technical Parameters

  • Status
  • Active
  • Vin (min) (V)
  • 2.8
  • Vin (max) (V)
  • 4.5
  • SW Freq (typ) (kHz)
  • 1000
  • Number of LEDs (max) (pcs)
  • 4
  • Iout (max)/channel (mA)
  • 25
  • Iq (typ) (mA)
  • 1
  • Dimming Control
  • PWM
  • Features
  • Enable Input;OVP
  • Package Type
  • WQFN2x2-12

RT9378AGQW Documents

RT9378AGQW Related Products

Ratings and Reviews (1)

  • 5 / 5
  • 5 Stars 100%
  • 4 Stars 0%
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  • 1 Stars 0%
  • **homa***

    Alles bestens, toller Zustand, Vielen Dank

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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 RT9378AGQW 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 RT9378AGQW devices; we pay more attention to the channels and quality of RT9378AGQW products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of RT9378AGQW chips? Including RICHTEK original factory information, LED Driver ; White LED Driver application, RT9378AGQW pictures?
You can use Jotrin's intelligent search engine, or filter by LED Driver ; White LED Driver category, or find it through Richtek Technology Corporation Information page.
Q: Are the RICHTEK's RT9378AGQW 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 RT9378AGQW, 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 RT9378AGQW?
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 RT9378AGQW we delivered, we will accept the replacement or return of the RT9378AGQW 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 RT9378AGQW.
(3)The RT9378AGQW 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 RT9378AGQW datasheet pdf, RT9378 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...
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