Product Information

L99LD21Q6TR

L99LD21Q6TR electronic component of STMicroelectronics

Datasheet
LED Lighting Drivers High power LED driver for automotive applications
Manufacturer: STMicroelectronics
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

3000: USD 2.7619 ea
Line Total: USD 8285.7

0 - Global Stock
MOQ: 3000  Multiples: 3000
Pack Size: 3000

 More Buying Options & Price Grid(s)

Availability Price Quantity
0 - WHS 1


Ships to you between Tue. 07 May to Mon. 13 May

MOQ : 3000
Multiples : 3000

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L99LD21Q6TR
STMicroelectronics

3000 : USD 5.225
6000 : USD 5.1775
9000 : USD 5.1312
12000 : USD 5.085
15000 : USD 5.0375
24000 : USD 4.9912
30000 : USD 4.9437
75000 : USD 4.8962
150000 : USD 4.85

0 - WHS 2


Ships to you between Mon. 13 May to Wed. 15 May

MOQ : 1
Multiples : 1

Stock Image

L99LD21Q6TR
STMicroelectronics

1 : USD 7.1726
10 : USD 4.6872
25 : USD 4.428
100 : USD 3.8448
250 : USD 3.6504
500 : USD 3.2724
1000 : USD 2.9808
3000 : USD 2.97

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Additional Infomation About Product

L99LD21 High power LED driver for automotive applications Datasheet - production data Peak current control Constant VLED x TOFF architecture Protection and diagnostic Battery under voltage 4)1 / Temperature warning (2 thresholds) * * 36 Overtemperature shutdown LED voltage digital feedback through SPI Features Buck outputs short circuit and open load AEC-Q100 qualified protection General Applications ST SPI communication v4.1 5.5 to 24 V Operating battery voltage range Low Beam Load dump protected High beam QFN40L 6x6 (wettable flanks) with Daytime running light exposed pad Timeout watchdog and limp home function Turn indicator Low standby current Position light Boost Section Side marker Fixed frequency architecture, Fog light programmable by SPI Peak current mode control Description Dual phase operation supported The L99LD21 is a flexible LED driver, which is Input current limitation specifically designed for the control of two Soft start independent high brightness LED strings for Overvoltage protection (OVP) automotive front lighting applications. It consists Short feedback failure protection of a high efficiency monolithic boost controller and Constant voltage control a dual buck converter. Buck section The boost controller integrates a high current gate Integrated switching mosfets driver for an external n-channel mosfet. It delivers Lossless current sensing without need of a constant output voltage, up to 60 V, which external components supplies the inputs of the two integrated or external buck converters. Very accurate LED current setting programming inductor s peak current and The boost controller of two devices can be peak-to-peak current ripple stacked, in order to operate in dual phase for high Adjustable peak current by SPI power applications, with an interleaving pattern Adjustable current ripple by SPI for an improved input current ripple. Integrated PWM generation unit with 10-bit The buck converters integrate n-channel mosfet resolution and phase shift which is driven by a bootstrap circuit. July 2018 DS11130 Rev 5 1/73 This is information on a product in full production. www.st.comContents L99LD21 Contents 1 Introduction 8 1.1 Typical application . 9 2 Boost controller 13 2.1 General description . 13 2.2 Frequency selection . 13 2.3 Output voltage setting . 13 2.4 Overvoltage protection . 13 2.5 Feedback failure protection . 14 2.6 Operation in dual phase interleaved mode 14 2.7 Soft start 16 2.8 Slope compensation . 16 2.9 Operation together with the buck converters 16 3 Buck converters . 18 3.1 General description . 18 3.2 Bootstrap circuit 18 3.3 Peak and average current setting 18 3.4 Buck converters blank time . 20 3.5 Buck converters start-up . 21 3.6 Switching frequency . 21 4 Functional description 22 4.1 Operating modes . 22 4.1.1 Standby mode 22 4.1.2 Pre-standby mode . 23 4.1.3 Reset mode 23 4.1.4 Limp home . 23 4.1.5 Active mode 24 4.2 Programmable functions . 25 4.2.1 Activation of the buck output . 25 4.2.2 PWM dimming 25 2/73 DS11130 Rev 5

HS Compliance

Tariff Desc

8542.39.23 No ..Linear/analogue and peripheral integrated circuits, timers, voltage regulators, A/D and D/A converters, telecommunication and modem integrated circuits, other than board level products Free

Electronic integrated circuits- Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits

Stmicroelectronics may also be referenced as

C-Max
C-Max (VA)
SG3
ST
ST MICROELECTRONICS
ST2
ST7
STM
STMICRELECTRONICS
STN

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