Powrót do: Analog Devices Inc.

Analog Devices / Maxim Integrated MAX16833 High Voltage HB LED Drivers

Analog Devices MAX16833C and MAX16833D high voltage HB LED drivers, with an integrated high-side current sense amplifier, provide extremely fast PWM current switching to the LEDs with no transient overvoltage or undervoltage conditions. These drivers provide analog dimming using a DC input at ICTRL. The ICs sense the LED current at the high side of the LED string. The MAX16833 features a +5V to +65V wide input voltage range with a 65V max boost output. The high-side current sensing combined with a p-channel dimming MOSFET allows the positive terminal of the LED string to be shorted to the positive input terminal or negative input terminal without any damage. This Analog Devices MAX16833 series is ideal for automotive exterior lighting as well as a variety of commercial, industrial, and architectural lighting applications.

Features

  • Boost, SEPIC, and Buck-Boost Single-Channel LED Drivers
  • +5V to +65V Wide Input Voltage Range with a 65V Max Boost Output
  • Integrated High-Side Current-Sense Amplifier
  • ICTRL Pin for Analog Dimming
  • Integrated High-Side pMOS Dimming MOSFET Driver (Allows Single-Wire Connection to LEDs)
  • Programmable Operating Frequency (100kHz to 1MHz) with Synchronization Capability
  • Frequency Dithering for Spread-Spectrum Applications (MAX16833C / MAX16833E)
  • 2% Accurate 1.64V Reference (MAX16833B / MAX16833D)
  • Full-Scale, High-Side, Current-Sense Voltage of 200mV
  • Short-Circuit, Overvoltage, and Thermal Protection
  • Fault Indicator Output
  • -40°C to +125°C Operating Temperature Range
  • Thermally Enhanced 5mm x 4.4mm, 16-Pin TSSOP Package with Exposed Pad

Applications

  • Automotive Exterior Lighting: High-Beam/Low-Beam/Signal/Position Lights, Daytime Running Lights (DRLs), Fog Light and Adaptive Front Light Assemblies
  • Commercial, Industrial, and Architectural Lighting

Operating Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX16833 High Voltage HB LED Drivers

Development Tool

MAX16833 Evaluation Kit has a proven design to evaluate the MAX16833 high-voltage HB LED driver with integrated high-side current sense. The EV kit is set up for boost and buck-boost configurations and operates from a 5V to 18V DC supply voltage. 

Opublikowano: 2011-02-14 | Zaktualizowano: 2023-04-21