Automotive-grade 12-channel LED driver with open detection, local dimming, busdriven and standalone operations

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  • The ALED1262ZT is a monolithic 12 output LED driver designed for automotive exterior and interior lighting applications. The ALED1262ZT guarantees 19 V output driving capability allowing users to connect several LEDs in series. In the output stage, twelve regulated current sources provide from 6 mA to 60 mA constant current to drive LEDs. The current is programmed by a single external resistor. In the ALED1262ZT, LED open error detection is available.

    The brightness can be adjusted separately for each channel through a 7-bit grayscale control. A slow turn-on and turn-off time improves the system low noise generation performance. Moreover the gradual output delay reduces the inrush current. To further increase EMI performance, this device implements an internal clock dithering to have a spread spectrum noise reduction.
    Thermal management is equipped with overtemperature data alert and the output thermal shutdown (170 °C). The I²C high clock frequency, up to 400 kHz, makes the device suitable for high data rate transmissions. The supply voltage range is between 5.5 V and 38 V avoiding any external pre-regulation or additional load dump protection on the power supply stage.
    This device can operate in bus-driven mode (BDM) using I²C interface or in standalone mode (SAM) using internal custom configuration by OTP.

    Key Features

    • Designed for automotive applications
    • 12 constant current output channels
    • 19 V current generator rated voltage
    • Output current: from 6 mA to 60 mA
    • Current programmable by a single external resistor
    • 7-bit PWM local brightness control
    • Slow turn-on/off time, gradual output delay and dithered clock for EMI reduction
    • Error detection for open LEDs
    • Supply voltage: from 5.5 V to 38 V
    • Thermal shutdown and overtemperature alert
    • Standalone and bus-driven mode
    • Custom configuration by OTP with Redundancy and ECC
    • 400 kHz fast I²C interface with selectable extended Hamming encoding
    • Wired-OR error flag connection

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Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
Temperature (°C) ECCN (US)
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ALED1262ZTTR
Active
10000 1 HTSSOP24 Tape And Reel -40 150 EAR99
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Country of Origin:

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Distributor availability ofALED1262ZTTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 963 1 Order Now
AVNET AMERICA 1000 0 Order Now
Farnell Element14 EUROPE 100 1 Order Now
RUTRONIK EUROPE 50 2500 Order Now

Distributor reported inventory date: 2019-11-19

Distributor Name

DIGIKEY

Stock

963

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

100

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

50

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-19

ALED1262ZTTR

Marketing Status

Active

Quantity

10000

Unit Price (US$)

1.0*

Distributor availability ofALED1262ZTTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 963 1 Order Now
AVNET AMERICA 1000 0 Order Now
Farnell Element14 EUROPE 100 1 Order Now
RUTRONIK EUROPE 50 2500 Order Now

Distributor reported inventory date: 2019-11-19

Distributor Name

DIGIKEY

Stock

963

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

100

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

50

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-19

Unit Price (US$)

1

Package

HTSSOP24

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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      Evaluation kit for automotive rear lights with pattern animations based on ALED1262ZT and STM8AF6266

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12631
      Automotive-grade 12-channel LED driver with open detection, local dimming, bus driven and standalone operations
      4.0
      3.29 MB
      PDF
      DS12631

      Automotive-grade 12-channel LED driver with open detection, local dimming, bus driven and standalone operations

Publications and Collaterals

    • Description Version Size Action
      Automotive-grade 12-Channel LED Driver for advanced rear lighting solutions 1.0
      1.33 MB
      PDF

      Automotive-grade 12-Channel LED Driver for advanced rear lighting solutions

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ALED1262ZTTR
Active
HTSSOP24 Automotive Ecopack2

ALED1262ZTTR

Package:

HTSSOP24

Material Declaration**:

Marketing Status

Active

Package

HTSSOP24

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.

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