MAXIM MAX25611CAUD/V+

MAX25611A/MAX25611B/MAX25611C/MAX25611D are single-channel high-brightness LED drivers designed for automotive headlight applications, including high beam, low beam, daytime running lights (DRL), turn signals, fog lights, and other LED lighting. They accept input voltages 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 protects against short circuits from the output to ground or battery input. This also provides the most flexible solution for driving LEDs, supporting boost, high-side buck, SEPIC, or buck-boost mode configurations. The PWM input enables LED dimming ratios of up to 5000:1, and the REFI input provides additional analog dimming capability for the MAX25611A/B/C/D. The MAX25611A/B/C/D feature built-in spread-spectrum modulation to improve EMC. Where required by specific applications, the MAX25611A/B/C/D can also be configured as zeta or Cuk converters. The MAX25611A/B/C/D are housed in a space-saving 12-pin SwTQFN-EP package and are specified for operation over the automotive temperature range of -40°C to +125°C. The switching frequency of the MAX25611A/MAX25611C is internally set to 350kHz, while the MAX25611B/MAX25611D operate at 2.2MHz.

• Automotive-grade: AEC-Q100 qualified
• Integrated design minimizes BOM for high-brightness LED drivers
• Integrated pMOS dimming FET gate driver, allowing single-wire connection to LED string
• Supports 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, maximum boost output 65V
• Supports boost, buck-boost, high-side buck, SEPIC, Zeta, and Cuk single-channel LED driving
• Protection features and wide temperature range for enhanced system reliability
• Short-circuit, overvoltage, and thermal protection
• -40°C to +125°C operating temperature range

• Automotive exterior lighting
• High beam / Low beam / Signal lights / Position lights
• Daytime Running Lights (DRL)
• Fog lights and adaptive headlight assemblies
• Head-Up Display (HUD)