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L99LD21Q6TR The STMicroelectronics L99LD21Q6TR is an LED Driver IC with a 1.5A output current and PWM dimming capability. It is designed for automotive and lighting applications.
Mfr Part #:

L99LD21Q6TR

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics L99LD21Q6TR is an LED Driver IC with a 1.5A output current and PWM dimming capability. It is designed for automotive and lighting applications.
✓ Total Stock: 6,000 pcs
$ Price Range: $0.17

L99LD21Q6TR Available from 1 distributor

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✓ Non-Authorised
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6,000 pcs
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L99LD21Q6TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Dimming
Frequency
Internal Switch(s)
Mounting Type
Number of Outputs
Operating Temperature
Supplier Device Package
Topology
Type
Voltage
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L99LD21Q6TR Description

Short technical summary and product information.

The STMicroelectronics L99LD21Q6TR is an integrated circuit designed for LED driving applications. This device functions as a DC-DC regulator with both buck and boost topologies, offering flexibility in power management.

 

Key electrical specifications include an output current of 1.5A per channel and a wide operating supply voltage range from 5.5V to 24V, with an output voltage capability of up to 50V. The device supports PWM dimming for precise light control and operates within a frequency range of 100kHz to 450kHz. It features two outputs and an internal switch.

 

Designed for demanding environments, the L99LD21Q6TR operates from -40°C to 150°C (TJ). Its applications include automotive systems and general lighting solutions. The component is housed in a 40-QFN (6x6) package and is suitable for surface mounting.

 

Environmental compliance includes RoHS3 status, REACH unaffected, and an MSL rating of 3.

L99LD21Q6TR Quick Information

Product Type: LED Driver IC
Series: Automotive, AEC-Q100
Canonical Name: L99LD21Q6TR LED Driver IC
Subcategory: PMIC - LED Drivers

L99LD21Q6TR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

L99LD21Q6TR Estimated Pricing

Qty Low High
1+ $0.17 $0.17

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

L99LD21Q6TR Features

  • DC DC regulator with buck, boost topology.
  • 1.5A output current per channel.
  • Supports PWM dimming control.
  • Wide 5.5V to 24V supply voltage.
  • Surface mount 40-QFN package.

L99LD21Q6TR Applications

  • Automotive exterior lighting control systems
  • LED matrix headlight and taillight drivers
  • Industrial LED power supply regulation
  • High-brightness LED string boost converters
  • Dual-channel automotive interior dimming circuits

L99LD21Q6TR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the L99LD21Q6TR?

The input voltage range is 5.5V to 24V.

What is the output voltage of the L99LD21Q6TR?

The output voltage is 50V.

What is the output current per channel?

The output current per channel is 1.5A.

What package does the L99LD21Q6TR come in?

It comes in a 40-TFQFN Exposed Pad package, also specified as 40-QFN (6x6mm).

What is the operating temperature range?

The operating junction temperature range is -40°C to 150°C.

Does the L99LD21Q6TR support dimming?

Yes, it supports PWM dimming.

What topologies does the L99LD21Q6TR support?

It supports buck and boost topologies.

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