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  • 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

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STMicroelectronics - L99LD20

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Quality and Reliability

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

L99LD20Q6

Package:

VFQFPN 6X6

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 6X6

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99LD20Q6TR

Package:

VFQFPN 6X6

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 6X6

Grade

Automotive

RoHS Compliance Grade

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L99LD20Q6TR Available at 2 distributors

Distributor availability ofL99LD20Q6TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 985 1 Order Now
Farnell Element14 EUROPE 200 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

MOUSER

Stock

985

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

200

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

Buy Direct
Active
EAR99 NEC Tape And Reel VFQFPN 6X6 - - THAILAND 1.753 / 1k
L99LD20Q6 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray VFQFPN 6X6 - - THAILAND 1.753 / 1k

L99LD20Q6TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.753 / 1k

Distributor availability ofL99LD20Q6TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 985 1 Order Now
Farnell Element14 EUROPE 200 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

MOUSER

Stock

985

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

200

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 6X6

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.753 / 1k

Country of Origin

THAILAND

L99LD20Q6

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.753 / 1k

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN 6X6

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.753 / 1k

Country of Origin

THAILAND

(*) 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