L99LD20

The L99LD20 is a flexible LED driver, which is specifically designed for the control of two independent high brightness LED strings for automotive front lighting applications. It consists of a high efficiency monolithic dual buck converter.

The buck converters integrate n-channel MOSFET which is driven by a bootstrap circuit.

When more than two LED channels are required on one module, then more devices L99LD20 can be combined; also with L99LD21 device - incorporating Boost Controller - from which L99LD20 derivate.

Key Features

AEC-Q100 qualified
General
- ST SPI communication v4.1
- 5.5 to 24 V Operating battery voltage range
- Load dump protected
- QFN40L 6x6 (wettable flanks) with exposed pad
- Timeout watchdog and limp home function
- Low standby current
Buck section
- Integrated switching mosfets
- Lossless current sensing without need of external components
- Very accurate LED current setting programming inductor's peak current and peak-to-peak current ripple
- Adjustable peak current by SPI
- Adjustable current ripple by SPI
- Integrated PWM generation unit with 10-bit resolution and phase shift
- Peak current control
- Constant VLED x TOFF architecture
Protection and diagnostic
- Battery under voltage
- Temperature warning (2 thresholds)
- Overtemperature shutdown
- LED voltage digital feedback through SPI
- Buck outputs short circuit and open load protection

Resources

Technical Documentation

Product Specifications

	Description	Version	Size
	DS11366: High power LED driver for automotive applications	2.0	1 MB

Publications and Collaterals

Selection Guides

	Description	Version	Size
	Smart power solutions for car body applications	4.0	3 MB

Sample & Buy

Part Number	Marketing Status	Quantity	Unit Price (US$) *	Package	Packing Type	Operating Temperature (°C) (min)	Operating Temperature (°C) (max)	ECCN (US)	Country of Origin	More info	Order from ST	Order from Distributors
L99LD20Q6TR	Active : Product is in volume production	1000	1.753	VFQFPN 6X6	Tape And Reel	-	-	EAR99	MALAYSIA	MORE INFO		No availability reported, please contact our Sales office
L99LD20Q6	Active : Product is in volume production	1000	1.753	VFQFPN 6X6	Tray	-	-	EAR99	MALAYSIA	MORE INFO		No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors

Quality & Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade	Material Declaration**
L99LD20Q6TR	Active	VFQFPN 6X6	Automotive	Ecopack2
L99LD20Q6	Active	VFQFPN 6X6	Automotive	Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Resources

Technical Documentation

Publications and Collaterals

Featured Videos

Sample & Buy

Quality & Reliability

No availability reported, please contact our Sales office