This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.


LED Lighting Drivers 18 W Universal Input

Inquiry Add To Bom

LYT7503D General Description

LYTSwitch™-7 family phase-cut dimmable single-stage LED driver IC with combined PFC and constant current output for buck topology is ideal for single-stage, high PF, constant current LED dimmable applications. The family incorporates a high-voltage MOSFET with a variable on-time CrM controller. Extensive protection features with minimum external components provide industry leading power density and functionality. The CrM operation results in low turn-on losses and reduces cost of output diode (slower reverse-recovery type can be used). LYTSwitch-7 devices are suitable for applications from 4W to 22W. LYTSwitch-7 peak current mode operation is suitable for TRIAC applications without the need for an active bleeder. Over-temperature shutdown provides protection during fault conditions. Thermal foldback ensures that light continues to be delivered at elevated temperatures.

Key Features

  • Comprehensive protection features with auto-restart
  • Single-stage PFC + accurate CC output, design flexibility, highest reliability
  • ±3% CC regulation in single line input voltage applications, power factor>0.9, high efficiency>85%
  • Robust 725V MOSFET for increased line voltage surge resistance, critical conduction mode (CrM) buck
  • Low EMI, excellent line noise and transient rejection Fast turn-on (<500ms), low pop-on
  • Better than 10:1 dimming ratio, simple passive R-C damper, monotonic dimming profile
  • Wide input (90VAC - 308VAC) and output voltage range operation, requires no inductor bias winding
  • 2 family members cover power range for optimum device selection
  • Industry's lowest component count dimming solution
  • Advanced thermal control, input/output overvoltage protection, output short-circuit protection


Manufacturer Power Integrations Product Category LED Lighting Drivers
RoHS Details Series LYTSwitch-6
Mounting Style SMD/SMT Package / Case SOIC-8
Number of Outputs 1 Output Output Current 125 mA
Input Voltage, Min 90 V Input Voltage, Max 308 V
Topology Buck Operating Frequency 20 kHz
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 150 C
Brand Power Integrations Input Voltage 90 VAC to 308 VAC
Number of Channels 1 Channel Output Type Constant Current
Pd - Power Dissipation 18 W Product LED Drivers
Product Type LED Lighting Drivers Factory Pack Quantity 100
Subcategory Driver ICs Supply Current - Max 785 uA
Tradename LYTSwitch-7 Type Dimmable LED Driver
Unit Weight 0.022505 oz


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


You need to log in to reply. Sign In | Sign Up

Buying Guide

  • What is the lifespan of LYT7503D?

    The lifespan of LYT7503D depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of LYT7503D?

    You can find it with PDF Datasheet for LYT7503D on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of LYT7503D?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of LYT7503D or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.