Power_Lighting

E522.46 | 8 Channel LED Driver with I²C Interface

Description

E522.46 provides eight linear high side current sources for
LED driving. Binning information for each individual LED as
well as various system configurations are stored in internal
E2PROM memory. The luminous intensity level of each LED is
adjusted by a common analog master current and an individual
PWM duty cycle, considering the stored binning information.
Supporting noise sensitive applications, external PWM
clocks can be applied up to 24kHz repetition rate.
Due to the synchronizable master-slave characteristic and
adjustable error handling with a common INTB error bus the
E522.46 is also designed to drive cluster applications and a
higher number of LED channels. For system setup and diagnostics
an I2C interface is used. An internal power management
system including a current source shut-off above
TJ=+165°C guarantees an appropriate power dissipation of
the system.

 

 

Features

  • Input voltage range 3.3V to 32V (max. 42V)
  • 8-channel I²C programmable Linear LED Driver
  • Parallel output operation for up to 200mA
  • 8Bit adjustable LED master current 1mA to 26.5mA
  • 8Bit PWM based LED luminous intensity level for LED binning calibration
  • All LED operating adjustment data and system configurations storable in E2PROM memory
  • Global PWM and configurable Analog Dimming
  • Adjustable thermal management by chip-temperature based derating of LED currents
  • Diagnostic functionalities:
    - OV/UV input voltage monitoring
    - Readable Temperature and LED Forward Voltages
    - Open/Short Load with Single-Short Detection
  • I2C interface assigned to:
    - LED parameter settings in E2PROM/Registers
    - Diagnosis feedback
  • Operating temperature range -40°C to +105°C
  • Full automotive qualification AEC-Q100

Applications

  • Automotive LED lighting, rear or stop Light
  • Multi-channel panel applications
  • Low current interior lighting
  • Turn indicator driver
  • Industrial LED applications or RGB drivers

Ordering Information

  • Samples
    Part No.TempJunc RangePackageOrder No.
    E522.46-40°C to +150°CDFN18L5040 E52246A84C

     

  • Boards
    Part No.DescriptionBoard typeOrder No.
    E522.468 Channel LED DriverEvaluation KitK52246-0001

     

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Application Diagram

8 Channel LED Driver with I²C Interface

Documentation