Analog Devices / Maxim Integrated MAX16832A/MAX16832C High-Brightness LED Drivers

Analog Devices MAX16832A/MAX16832C Step-Down Constant-Current High-Brightness LED (HB LED) Drivers provide a cost-effective design solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other LED illumination applications. The Analog Devices MAX16832A/MAX16832C operates from a +6.5V to +65V input voltage range and can provide an output current of up to 700mA. They can be operated up to a temperature of +125°C or up to a 1A if operated up to a temperature of +105°C. A high-side current-sense resistor adjusts the output current, and a dedicated pulse-width modulation (PWM) input enables pulsed LED dimming over a wide range of brightness levels. The Maxim MAX16832A/MAX16832 are well suited for applications requiring a wide input voltage range. The high-side current sensing and an integrated current-setting circuitry minimize the number of external components while delivering an average output current with ±3% accuracy.

Features

  • Cost-effective solution for a wide range of LED lighting applications
    • 6.5V to 65V input voltage range
    • Output current up to 1A
    • ±3% LED current accuracy
    • Selectable dimming options (linear or PWM)
  • Minimal component count saves cost and space
    • Onboard 65V, 0.45Ω power MOSFET
    • Resistor-programmable constant LED current
    • Integrated high-side current sense with 200mV current-sense reference
    • Hysteretic control (up to 2MHz switching frequency)
  • Protection features and a wide operating temperature range improve lighting fixture reliability
    • Thermal-foldback protection dims LEDs to minimize overheating
    • Thermal-shutdown protection
    • Available in a thermally enhanced 8-pin SO package
    • Operation over -40°C to +125°C temperature range

Applications

  • Architectural, industrial, and ambient lighting
  • Automotive RCL, DRL, and fog lights
  • Heads-up displays
  • Indicator and emergency lighting
  • MR16 and MR111 LED lights

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Published: 2015-11-11 | Updated: 2023-04-12