LED Driver IC 2 Output DC DC Regulator Buck, Boost PWM Dimming 1.5A 40-QFN (6x6)
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L99LD21Q6TR

DigiKey Part Number
497-18127-2-ND - Tape & Reel (TR)
497-18127-1-ND - Cut Tape (CT)
497-18127-6-ND - Digi-Reel®
Manufacturer
STMicroelectronics
Manufacturer Product Number
L99LD21Q6TR
Description
IC LED DRVR RGLTR PWM 1.5A 40QFN
Customer Reference
Detailed Description
LED Driver IC 2 Output DC DC Regulator Buck, Boost PWM Dimming 1.5A 40-QFN (6x6)
Datasheet
 Datasheet
EDA/CAD Models
L99LD21Q6TR Models
Product Attributes
Type
Description
Select All
Category
Manufacturer
STMicroelectronics
Series
-
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Part Status
Last Time Buy
Type
DC DC Regulator
Topology
Buck, Boost
Internal Switch(s)
Yes
Number of Outputs
2
Voltage - Supply (Min)
5.5V
Voltage - Supply (Max)
24V
Voltage - Output
50V
Current - Output / Channel
1.5A
Frequency
100kHz ~ 450kHz
Dimming
PWM
Applications
Lighting
Operating Temperature
-40°C ~ 150°C (TJ)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
40-TFQFN Exposed Pad
Supplier Device Package
40-QFN (6x6)
Base Product Number
L99LD21
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In-Stock: 1,956
Check for Additional Incoming Stock
Once available stock of this product has been depleted, manufacturer standard package and lead time will apply.
Last Time Buy Date: 15/08/2026
Quantity
All prices are in GBP
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1£3.36000£3.36
10£2.54700£25.47
25£2.34440£58.61
100£2.12130£212.13
250£2.01492£503.73
500£1.95074£975.37
1,000£1.89794£1,897.94
* All Digi-Reel orders will add a £4.50 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
3,000£1.77934£5,338.02
Manufacturers Standard Package
Unit Price without VAT:£3.36000
Unit Price with VAT:£4.03200