High Efficiency Constant Current Led Driver

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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.

    Key Features

    • 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

样片和购买

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max
L99LD01TR-E
批量生产
1000 1.6804 LQFP 32 7x7x1.4 Tape And Reel - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

没有经销商,请联系我们的销售办事处 立即购买
L99LD01
批量生产
1000 1.6804 LQFP 32 7x7x1.4 Tray - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

没有经销商,请联系我们的销售办事处

L99LD01TR-E

供货状态

批量生产

数量

1000

单价(US$)

1.6804*

单价(US$)

1.6804

封装

LQFP 32 7x7x1.4

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L99LD01

供货状态

批量生产

数量

1000

单价(US$)

1.6804*

单价(US$)

1.6804

封装

LQFP 32 7x7x1.4

包装类型

Tray

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L99LD01
批量生产
LQFP 32 7x7x1.4 汽车 Ecopack2
L99LD01TR-E
批量生产
LQFP 32 7x7x1.4 汽车 Ecopack2

L99LD01

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

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

(**) 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.