LED Driver IC 2 Output DC DC Regulator Buck, Boost PWM Dimming 1.5A 40-QFN (6x6)
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

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
Product Questions and Answers

See what engineers are asking, ask your own questions, or help out a member of the DigiKey engineering community

In-Stock: 1 956
Check for Additional Incoming Stock
Last Time Buy Date: 15.08.2026
Quantity
All prices are in EUR
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1€ 3,73000€ 3,73
10€ 2,83200€ 28,32
25€ 2,60640€ 65,16
100€ 2,35810€ 235,81
250€ 2,23972€ 559,93
500€ 2,16840€ 1 084,20
1 000€ 2,10972€ 2 109,72
* All Digi-Reel orders will add a € 5,50 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
3 000€ 2,03724€ 6 111,72
Manufacturers Standard Package
Unit Price without VAT:€ 3,73000
Unit Price with VAT:€ 4,55060