概述
样片和购买
解决方案
资源
工具与软件
质量与可靠性
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  • L99LD01 is a precise constant current DC–DC converter LED driver for automotive applications, dedicated to the control of high-brightness LED headlights an housed in a LQFP32™ package.

    The device is designed to be used in Boost, Buck-Boost and Fly back converter topologies. An internal random dither oscillator works in low frequency modulation, allowing the RF spectrum of the switching frequency to spread so to reduce EMC emissions. The slope compensation ensures good converter loop stability whatever is the duty cycle needed by the application.
    The converter is able to work either in full power mode or in low frequency dimming mode.
    The device includes an internal low drop voltage regulator, that can be used to supply a microcontroller, and a reset pin, that is useful for resetting the microcontroller at the start up and every time that the regulated output voltage falls down below an established voltage threshold.

    主要特性

    • Automotive qualified
    • Constant current operation
    • Current LED settable by external sensing resistor and adjustable via SPI
    • Converter switching frequency adjustable by external resistor (RSF)
    • EMC reduction by internal spread spectrum dither oscillator
    • Low frequency PWM dimming operation.
    • Maximum input current limiter
    • Maximum switching duty cycle limiter
    • Slope compensation adjustable by external resistor (R9)
    • Battery overvoltage shut down protection (ext. R3, R4 resistors required)
    • Led chain OV detection (ext. R5, R6)
    • Multiplexed output for monitoring and control of LED temperature (external NTC resistor required), voltage of LED chain, and low frequency PWM
    • SPI communication serial interface transceiver (SDI, SDO, SCK, CSN)
    • Regulated output for micro supply 5 V ± 2 %-20 mA
    • Parameter programming and settings of internal memory registers by the dedicated SPI interface:
      • LED current reference adjusting (± 66.7 %)
      • Maximum input current limiter reference adjusting (± 55.5 %)
      • Random dither frequency sweeping, modulation frequency and deviation percentage
    • Power on reset pin output
    • ESD protection

适合您的资源

相关应用

LED照明和控制

自动数据采集系统

车身和舒适设备

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技术文档

    • 描述 版本 文档大小 操作
      DB1223
      High efficiency constant current LED driver
      2.0
      35.85 KB
      PDF
      DS9959
      High efficiency constant current LED driver for automotive applications
      3.0
      996.46 KB
      PDF
      DB1223

      High efficiency constant current LED driver

      DS9959

      High efficiency constant current LED driver for automotive applications

    • 描述 版本 文档大小 操作
      AN4501
      Design of a boost LED driver using L99LD01
      1.1
      940.79 KB
      PDF
      AN4501

      Design of a boost LED driver using L99LD01

    • 描述 版本 文档大小 操作
      TN0897
      ST SPI protocol
      2.3
      421.19 KB
      PDF
      TN0897

      ST SPI protocol

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      L99LD01 Automotive LED driver flyer 1.0
      844.36 KB
      PDF

      L99LD01 Automotive LED driver flyer

    • 描述 版本 文档大小 操作
      Smart power solutions for car body applications 4.0
      3.38 MB
      PDF

      Smart power solutions for car body applications

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L99LD01
NRND
LQFP 32 7x7x1.4 汽车应用 Ecopack2
L99LD01TR-E
批量生产
LQFP 32 7x7x1.4 汽车应用 Ecopack2

L99LD01

Package:

LQFP 32 7x7x1.4

Material Declaration**:

PDF

Marketing Status

NRND

Package

LQFP 32 7x7x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99LD01TR-E

Package:

LQFP 32 7x7x1.4

Material Declaration**:

PDF

Marketing Status

批量生产

Package

LQFP 32 7x7x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L99LD01TR-E 没有经销商,请联系我们的销售办事处 立即购买
批量生产
EAR99 NEC Tape And Reel LQFP 32 7x7x1.4 - - MALAYSIA 1.6804 / 1k
L99LD01 没有经销商,请联系我们的销售办事处
NRND
EAR99 NEC Tray LQFP 32 7x7x1.4 - - MALAYSIA 1.6804 / 1k

L99LD01TR-E

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.6804 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

LQFP 32 7x7x1.4

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.6804 / 1k

Country of Origin

MALAYSIA

L99LD01

供货状态

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.6804 / 1k

ECCN (EU)

NEC

包装类型

Tray

封装

LQFP 32 7x7x1.4

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.6804 / 1k

Country of Origin

MALAYSIA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商