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Automotive 16-Channel 100mA Local Dimming Backlight Driver with SPI Interface

16-Channel 100mA LED Local Dimming Driver Provides Full Diagnostics through SPI

Product Details

Key Features

Parametric specs for LED Drivers
VIN (V) (min) 3
VIN (V) (max) 5.5
Max. No. of LEDs 4
# LED Channels 16
Regulation Topology Inductor Based
LED Configuration Series-Parallel
Dimming Control SPI Serial
VDROPOUT (mV) (typ) 700
POUT (W) 50
ICC (mA) (max) 10
LED String Volt. (V) (max) 17
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
3.93
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Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for LED Drivers
VIN (V) (min) 3
VIN (V) (max) 5.5
Max. No. of LEDs 4
# LED Channels 16
Regulation Topology Inductor Based
LED Configuration Series-Parallel
Dimming Control SPI Serial
VDROPOUT (mV) (typ) 700
POUT (W) 50
ICC (mA) (max) 10
LED String Volt. (V) (max) 17
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
3.93

Key Features

  • High Integration
    • Complete 16-Channel Solution with Independent Dimming and Daisy-Chain Option
    • SPI Control for Minimum Parts Count
  • Robust and Low EMI
    • Programmable Spread Spectrum On Outputs
    • Slew-Rate Controlled Switching On LED Outputs
    • Programmable Phase Shift Between Outputs
  • Relative Dimming Ratio Between Strings Up to 32768:1
  • Latch Input (RST_LAT) for Synchronization to Video Frame
  • FB Output to Control External Power Supply for Minimum System Power Dissipation
  • 1% Accurate Output Current
  • Complete Diagnostics
    • LED Open/Short Detection and Protection
    • Power Supply Overvoltage Protection
    • Thermal Warning
    • Thermal Shutdown
  • Compact 32-Pin TQFN 5mm x 5mm Package

Applications/Uses

  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters

Description

The MAX21610 is a 16-channel modular backlight driver for use with automotive displays. The integrated current outputs can sink up to 100mA LED current, each depending on the ambient temperature. Device power comes from an external 3.3V or 5V supply, while the LED current-sink outputs can operate at up to 17V.

A feedback output pin (FB) is provided to control an external DC-DC converter so that voltage headroom can be optimized and the overall system power dissipation reduced.

The global LED current for all strings is set through a serial peripheral interface (SPI), with individual PWM settings for each of the channels. The PWM frequency can be determined using the internal oscillator or by synchronizing to the external CLKIO input.

The device features a high-speed SPI interface for control. Up to 10 devices can be daisy-chained to reduce connection complexity.

The MAX21610 is available in a TQFN package and operates in the -40 to 125°C temperature range.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.