IS31FL3743B-QULS4-TR

$2.94

Description：IC LED DRV LIN PWM 34.5MA 40UQFN
Series：-
Mfr：Lumissil Microsystems
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:6c21444a2dc7 Category: LED Drivers IC Brand: Lumissil Microsystems

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Product introduction

Product Detailed Parameters

Description：IC LED DRV LIN PWM 34.5MA 40UQFN
Series：-
Mfr：Lumissil Microsystems
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Linear
Topology：-
Internal Switch(s)：No
Number of Outputs：11
Voltage - Supply (Min)：2.7V
Voltage - Supply (Max)：5.5V
Voltage - Output：-
Current - Output / Channel：34.5mA
Frequency：12MHz
Dimming：PWM
Applications：General Purpose
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：40-UFQFN Exposed Pad
Supplier Device Package：40-UQFN (5x5)
Grade：-
Qualification：-

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IS31FL3743B-QULS4-TR

Overview

The IS31FL3743B-QULS4-TR is a linear LED driver IC manufactured by Lumissil Microsystems. It features 11 output channels with a constant current of 34.5mA per channel. The device supports PWM dimming and operates on a supply voltage range of 2.7V to 5.5V. It is housed in a 40-UQFN (5x5) package with exposed pad, suitable for surface mount installation. The component functions within an operating temperature range of -40°C to 125°C.

Feature Summary

Supports PWM dimming control for LED brightness adjustment
Integrates open LED protection functionality
Utilizes linear topology without internal switching elements

Applications

LED display drivers
General-purpose LED lighting systems
Matrix LED applications

Procurement Notes

Verify the specific suffix QULS4 against official Lumissil documentation to confirm pinout and thermal characteristics. Ensure compatibility with the target PCB footprint for the 40-UQFN package. Confirm that the 34.5mA output current meets the load requirements. Check moisture sensitivity level handling procedures during assembly.

Selection Notes

Select this component when an 11-channel linear driver with PWM capability is required. The 34.5mA output current suits low-to-medium power LED arrays. The wide operating temperature range allows use in demanding environments. Consider the UQFN package size for space-constrained designs requiring exposed pad thermal dissipation.

Part Context

This part belongs to the IS31FL3743 series from Lumissil Microsystems. It is related to the IS31FL3743A variant, which shares similar electrical specifications but may differ in packaging or revision details. The series focuses on efficient LED driving solutions for compact electronic devices.

Replacement Considerations

The IS31FL3743A-QULS4-TR is a documented alternative within the same family. Verify if functional differences exist between the A and B revisions before substitution.

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

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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

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Mode of Transportation

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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.