回到顶部

4-Channel, Low-Voltage, 120mA LED Backlight Drivers with Integrated Boost Converter

Industry Best Efficiency, Integrated Boost Converter LED Driver

产品详情

主要特征

简化框图

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

主要特征

  • Operate down to 3V on Battery Input after Start-Up
    • Wide Boost Duty Cycle to Support Low Input Voltage
  • Boost or SEPIC Current-Mode DC-DC Controller
    • 400kHz to 2.2MHz Operating Frequency Range
    • Spread Spectrum Available
    • Can Be Synchronized to an External Clock
  • LED Current Sinks
    • Up to 120mA Output Current per String
    • Low OUT_ Regulation Voltage for Best Efficiency
    • Optional Phase-Shifting of Outputs
  • 16667:1 Dimming Ratio at 200Hz
  • NTC Input for LED Current Foldback
  • Analog Dimming Capable
  • Built-In Automatic Fading Functionality
  • FLTB Output Provides Diagnostic Information
    • Shorted or Open LEDs
    • Thermal Shutdown
    • Output Undervoltage
  • Compact, 4mm x 4mm TQFN Package
  • AEC-Q100 Grade 1

应用/用途

  • 汽车中心显示器
  • 汽车抬头显示
  • 汽车仪表盘

描述

The MAX25510/MAX25511 are 4-channel, white-LED backlight drivers with an integrated current-mode boost converter that operate over a switching frequency range of 400kHz to 2.2MHz and incorporate spread spectrum. Phase-shifting of the output channels is included as an option to further reduce EMI.

The devices provide up to 120mA per channel and include a control output for an external nMOS series switch. These devices are capable of operating down to 3V after start-up.

The MAX25510 has a boost current limit of 3A (min), while the MAX25511 implements a higher minimum current limit of 4.5A for increased output power.

The MAX25510/MAX25511 are available in a compact TQFN package and operate over the temperature range -40°C to +125°C.

简化框图

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心