MAX25611A

Automotive High-Voltage, HB-LED Controller

Compact and Flexible LED Driver Controller for Automotive LED Lighting Applications


Please check latest availability status for a specific part variant.

Description

The MAX25611A/MAX25611B/MAX25611C/MAX25611D are single-channel HBLED drivers for automotive front light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and other LED lights. It can take an input voltage from 5V to 36V and can drive a string of LEDs with a maximum output voltage of 65V.

The MAX25611A/B/C/D sense output current at the high side of the LED string. High-side current sensing is required to protect for shorts from the output to the ground or battery input. It is also the most flexible scheme for driving LEDs, allowing boost, high-side buck, SEPIC mode, or buck-boost mode configurations. The PWM input provides LED dimming ratios of up to 5000:1, and the REFI input provides additional analog dimming capability in the MAX25611A/B/C/D. The MAX25611A/B/C/D have built-in spread-spectrum modulation for improved electromagnetic compatibility performance. The MAX25611A/B/C/D can also be used in zeta and Cuk converter configurations if it is necessary in some applications.

The MAX25611A/B/C/D are available in a space-saving 12-pin SWTQFN-EP package. They are specified to operate over the -40°C to +125°C automotive temperature range. The switching frequency is internally set at 350kHzfor the MAX25611A/MAX25611C and 2.2MHz for theMAX25611B/MAX25611D.

Design Solution: Light the Way with a Flexible, High-Dimming Ratio Automotive LED Driver ›

MAX25611A, MAX25611B, MAX25611C, MAX25611D: Simplified Application Circuit MAX25611A, MAX25611B, MAX25611C, MAX25611D: Simplified Application Circuit Enlarge+

Key Features

  • Automotive Ready: AEC-Q100 Qualified
  • Integration Minimizes BOM for High-Brightness LED Driver
    • Integrated pMOS Dimming FET Gate Driver Allows Single-Wire Connection to LED String
    • PWM, Analog-to-PWM and Analog Dimming
    • Integrated High-Side, Current-Sense Amplifier
    • 12-Pin SWTQFN-EP Package
  • Flexible Application Configurations
    • +5V to +36V Wide Input Voltage Range with a Maximum +65V Boost Output
    • Boost, Buck-Boost, High-Side Buck, SEPIC, Zeta, and Cuk Single-Channel LED Drivers
  • Protection Features and Wide Temperature Range Increase System Reliability
    • Short-Circuit, Overvoltage, and Thermal Protection
    • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automotive Exterior Lighting
  • Commercial, Industrial, and Architectural Lighting
  • Daytime Running Lights (DRLs)
  • Fog Lights and Adaptive Front Light Assemblies
  • Head-Up Displays
  • High Beam/Low Beam/Signal/Position lights
Part NumberRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
(A)
PWM Dimming Freq.
(kHz)
Dimming RatioDimming ControlVCURR_SENSE
(mV)
POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Oper. Freq.
(kHz)
Package/PinsBudgetary
Price
maxmaxmaxminmaxmaxmaxSee Notes
MAX25611A NEW!Inductor Based151Series1.525000
Analog
Analog Controlled PWM
PWM
20050536565350
TQFN-CU/12
TSSOP-CU/14
$1.24 @1k
MAX25611B NEW!362200
TQFN-CU/12
TSSOP-CU/14
$1.24 @1k
MAX25611C NEW!48350
TQFN-CU/12
TSSOP-CU/14
-
MAX25611D NEW!482200
TQFN-CU/12
TSSOP-CU/14
-
See All LED Drivers (78)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX25611EVKIT: Evaluation Kit for the MAX25611A/MAX25611B

CAD Symbols and Footprints

  • MAX25611AATC/VY+
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
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    Temperature:

    Related Resources


    MAX20056B
    Integrated, 6-Channel High-Brightness LED Driver with Very Wide PWM Dimming Ratio and Phase Shifting for Automotive Displays

    • Robust with Respect to EMC and Automotive Battery Transients
    • Spread-Spectrum Mode Reduces Emission at the Switching Frequency and its Harmonics
    • Phase-Shift Dimming of LED Strings

    MAX25612
    Automotive Synchronous High Voltage LED Controller

    • Integration Minimizes BOM and Cost
    • Simple to Optimize for Efficiency, Board Space, and Input Operating Range
    • Protection Features Increase System Reliability

    MAX25600
    Synchronous High Voltage 4 Switch Buck Boost LED Controller

    • Automotive Ready: AEC-Q100 Qualified
    • Integration Minimizes BOM for High-Brightness LED Driver, Saving Space and Reducing Cost
    • Wide Dimming Ratio allows High Contrast Ratio