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Automotive Infrared LED Controller

Single Channel, Automotive IR LED Driver Simplifies Design for Automotive Driver Monitoring Systems

Product Details

Key Features

Applications/Uses

Parametric specs for LED Drivers
VIN (V) (min) 5
VIN (V) (max) 48
Max. No. of LEDs 8
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 5
PWM Dimming Freq. (kHz) (max) 2
Dimming Ratio (max) 5000
Dimming Control Analog
PWM
VCURR_SENSE (mV) 200
POUT (W) 100
ICC (mA) (max) 5
LED String Volt. (V) (max) 28
Switching Frequency (kHz) 2200
Package/Pins TQFN/20
TSSOP/20
Budgetary
Price (See Notes)
$2.87 @1k
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Technical Docs

Data Sheet Automotive Infrared LED Controller Oct 13, 2020

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Parameters

Parametric specs for LED Drivers
VIN (V) (min) 5
VIN (V) (max) 48
Max. No. of LEDs 8
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 5
PWM Dimming Freq. (kHz) (max) 2
Dimming Ratio (max) 5000
Dimming Control Analog
PWM
VCURR_SENSE (mV) 200
POUT (W) 100
ICC (mA) (max) 5
LED String Volt. (V) (max) 28
Switching Frequency (kHz) 2200
Package/Pins TQFN/20
TSSOP/20
Budgetary
Price (See Notes)
$2.87 @1k

Key Features

  • High-Current IR LED Driver with Reduced Peak Current on the Battery Harness
    • Maxim Proprietary Control Architecture
  • Protection Features Increase System Reliability
    • LED Short-to-Battery, Short-to-Ground Protection
    • LED String Open Protection
    • Thermal Protection
    • Fault Diagnosis through Fault Flag
  • Automotive Ready
    • -40°C to +125°C Operating Temperature Range
    • AEC-Q100 Qualified

Applications/Uses

  • Driver Monitoring Systems
  • IR LED drivers

Description

The MAX25613 is a single-channel, high-current IR LED driver for automotive Driver Monitoring Systems (DMS). It can take an input voltage from 5V to 48V and can drive a string of LEDs with a maximum output voltage of 55V. The MAX25613 operates using a Maxim proprietary, dual-control architecture to achieve high LED drive capability while minimizing the peak current on the battery harness.

The MAX25613 senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts from the output to the ground or battery input. The PWM input provides LED dimming ratios of up to 5000:1, and the ICTRL input provides additional analog dimming capability in the device. The MAX25613 also includes a fault flag that indicates LED short to battery, LED short to ground, LED open, and thermal shutdown. The MAX25613 has built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25613 is available in a space-saving (4mm x 4mm) 20-pin side-wettable TQFN or a-20 pin TSSOP package, and is specified to operate over the -40°C to +125°C automotive temperature range

Technical Docs

Data Sheet Automotive Infrared LED Controller Oct 13, 2020

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 .