L99LD01

批量生产

高效恒定电流Led驱动器

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概述
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样片和购买
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质量与可靠性
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产品概述

描述

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.
  • 所有功能

    • 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

特别推荐

相关应用

汽车应用

All tools & software

EDA符号、封装和3D模型

STMicroelectronics - L99LD01

为您的应用下载所有EDA符号、封装和3D模型,加快您的设计速度。您可以从大量CAD格式中进行选择,以匹配您的设计工具链。

Symbols

符号

Footprints

封装

3D model

3D模型

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 mm 汽车应用 Ecopack2
L99LD01TR-E
批量生产
LQFP 32 7x7x1.4 mm 汽车应用 Ecopack2

L99LD01

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF

Marketing Status

NRND

Package

LQFP 32 7x7x1.4 mm

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99LD01TR-E

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF

Marketing Status

批量生产

Package

LQFP 32 7x7x1.4 mm

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 无法联系到经销商,请联系我们的销售办事处 Buy Direct
批量生产
EAR99 NEC Tape And Reel LQFP 32 7x7x1.4 mm - - MALAYSIA 1.6804 / 1k
L99LD01 无法联系到经销商,请联系我们的销售办事处
NRND
EAR99 NEC Tray LQFP 32 7x7x1.4 mm - - 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 mm

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 mm

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