Mfr Part #:

TL4242DRJR

The TL4242DRJR is an adjustable, constant-current LED driver from Texas Instruments, capable of driving loads up to 500 mA. It features a wide input voltage range and integrated protection circuits.

✓ Total Stock: 5,956 pcs

$ Price Range: $0.62

TL4242DRJR Available from 9 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Optech Co.,Limited ✓ Non-Authorised Inventory information	3,535 pcs On Request	3535 pcs	On Request	1	On Request	On Request	22+	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,543 pcs On Request	1543 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
ACK ELEKTRONIK ✓ Non-Authorised Inventory information	344 pcs On Request	344 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	195 pcs On Request	195 pcs	On Request	1	On Request	On Request	16+	On Request	On Request
PROSOFT ELECTRONICS ✓ Non-Authorised Inventory information	109 pcs On Request	109 pcs	On Request	1	On Request	On Request	22+	On Request	On Request
MW.FEP S.p.A. ✓ Non-Authorised Inventory information	107 pcs On Request	107 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Bristol Electronics ✓ Non-Authorised Inventory information	90 pcs On Request	90 pcs	On Request	1	On Request	On Request	2026-02-25 06:16:38	On Request	On Request
Chanetech ✓ Non-Authorised Inventory information	33 pcs On Request	33 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
HK XINYUANXIN ELECTRONIC TECH LIMITED ✓ Non-Authorised Inventory information	On Request On Request	On Request	On Request	1	On Request	On Request	On Request	On Request	On Request

TL4242DRJR Description

Short technical summary and product information.

The TL4242DRJR is an integrated, adjustable, constant-current LED driver designed by Texas Instruments to supply high-power LEDs. It can drive loads up to 500 mA, with the output current level adjustable via an external resistor. The device operates within a wide input voltage range, up to 42 V, and features a low drop voltage.

Key features include PWM brightness regulation, open-load detection, overtemperature protection, short-circuit proofing, and reverse-polarity protection. The connected LEDs are also protected against reverse polarity and excess voltages up to 45 V. The TL4242DRJR is characterized for operation from -40°C to 150°C.

This LED driver is supplied in a 8-WSON (4x4) package with surface mount mounting type. It is suitable for applications requiring precise current control for LED illumination and display backlighting.

TL4242DRJR Quick Information

Product Type: LED Driver

Canonical Name: TL4242DRJR Adjustable Constant-Current LED Driver

Subcategory: Linear LED Driver

TL4242DRJR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TL4242DRJR Estimated Pricing

Qty	Low	High
1+	$0.62	$0.62

Estimated market price range - modelled values for guidance only, not live distributor offers.

TL4242DRJR Features

Adjustable constant current up to 500mA.
Wide input voltage range up to 42V.
PWM brightness regulation capability.
Integrated overtemperature protection.
Short-circuit and reverse-polarity proof.

TL4242DRJR Applications

Ideal for high-power LED driving.
Suitable for LED display backlighting.
Used in automotive LED applications.
General purpose LED current control.

TL4242DRJR FAQs

7 frequently asked questions generated from this part’s specifications.

What is the maximum output current of the TL4242DRJR?

The TL4242DRJR provides adjustable constant current up to 500 mA.

Does the TL4242DRJR support PWM brightness regulation?

Yes, it supports PWM brightness regulation.

What protections are integrated in the TL4242DRJR?

It includes open-load detection, overtemperature protection, short-circuit proof, and reverse-polarity proof.

What is the operating temperature range?

-40°C to 150°C junction temperature.

What package is the TL4242DRJR offered in?

8-WDFN exposed pad surface-mount package, also known as WSON (DRJ).

What is the package quantity for the TL4242DRJR?

It is supplied in large tape and reel packaging with 3,000 units per reel.

How many outputs does the TL4242DRJR have?

It has 1 output.

Category	LED Drivers
Manufacturer Name	Texas Instruments
Current	500mA
Features	Adjustable Constant Current up to 500 mA (±5%); PWM Brightness Regulation; Wide Input Voltage Range up to 42 V; Low Drop Voltage; Open-Load Detection; Overtemperature Protection; Short-Circuit Proof; Reverse-Polarity Proof; Wide Temperature Range: -40°C to 150°C
Internal Switch(s)	Yes
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature	-40°C to 150°C
Supplier Device Package	DRJ
Type	Linear
Voltage	4.5V