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LM3464

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具有动态余量控制和热控制接口的 80V LED 驱动器

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LM3464

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产品详情

Input voltage type DC Linear, DC/DC Topology Current Sink, Multi-Channel Vin (min) (V) 12 Vin (max) (V) 80 Vout (max) (V) 80 Vout (min) (V) 0.9 Iout (max) (A) 4 Iq (typ) (mA) 2.3 Features Enable/Shutdown, Thermal Foldback, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 4 Rating Catalog
Input voltage type DC Linear, DC/DC Topology Current Sink, Multi-Channel Vin (min) (V) 12 Vin (max) (V) 80 Vout (max) (V) 80 Vout (min) (V) 0.9 Iout (max) (A) 4 Iq (typ) (mA) 2.3 Features Enable/Shutdown, Thermal Foldback, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 4 Rating Catalog
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • Wide Input Voltage Range
    • 12V-80V (LM3464)
    • 12V-95V (LM3464A)
  • Dynamic Headroom Control Ensures Maximum Efficiency
  • 4 Output Channels With Individual Current Regulation
  • High Channel to Channel Accuracy
  • Digital PWM/Analog Dimming Control Interface
  • Resistor Programmable Dimming Frequency and Minimum Duty Cycle (Analog Dimming Mode)
  • Direct Interface to Thermal Sensor
  • Fault Detection
  • Over Temperature Protection
  • Thermal Shutdown
  • Under Voltage Lockout
  • Thermal Enhanced TSSOP-28 Package

All trademarks are the property of their respective owners.

  • Wide Input Voltage Range
    • 12V-80V (LM3464)
    • 12V-95V (LM3464A)
  • Dynamic Headroom Control Ensures Maximum Efficiency
  • 4 Output Channels With Individual Current Regulation
  • High Channel to Channel Accuracy
  • Digital PWM/Analog Dimming Control Interface
  • Resistor Programmable Dimming Frequency and Minimum Duty Cycle (Analog Dimming Mode)
  • Direct Interface to Thermal Sensor
  • Fault Detection
  • Over Temperature Protection
  • Thermal Shutdown
  • Under Voltage Lockout
  • Thermal Enhanced TSSOP-28 Package

All trademarks are the property of their respective owners.

The LM3464/64A is a 4-channel high voltage current regulator that provides a simple solution for LED lighting applications. The LM3464/64A provides four individual current regulator channels and works in conjunction with external N-channel MOSFETs and sense resistors to give accurate driving current for every LED string. Additionally, the Dynamic Headroom Control (DHC) output can be interfaced to the external power supply to adjust the LED supply voltage to the lowest level that is adequate to maintain all the string currents in regulation, yielding the optimal overall efficiency.

Digital PWM or analog voltage signals can be used to control the duty cycle of the all the channels. When analog control is used, the dimming frequency can be programmed via an external capacitor. A minimum duty cycle control is provided in the conditions that the analog dimming is configured as thermal feedback.

Protection features include VIN under-voltage lock-out, LED open/short circuit and over-temperature fault signaling to the system controller.

The LM3464/64A is a 4-channel high voltage current regulator that provides a simple solution for LED lighting applications. The LM3464/64A provides four individual current regulator channels and works in conjunction with external N-channel MOSFETs and sense resistors to give accurate driving current for every LED string. Additionally, the Dynamic Headroom Control (DHC) output can be interfaced to the external power supply to adjust the LED supply voltage to the lowest level that is adequate to maintain all the string currents in regulation, yielding the optimal overall efficiency.

Digital PWM or analog voltage signals can be used to control the duty cycle of the all the channels. When analog control is used, the dimming frequency can be programmed via an external capacitor. A minimum duty cycle control is provided in the conditions that the analog dimming is configured as thermal feedback.

Protection features include VIN under-voltage lock-out, LED open/short circuit and over-temperature fault signaling to the system controller.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3464/4A LED Driver w/Dynamic Headroom Control & Thermal Control Interfaces 数据表 (Rev. F) 2013年 5月 1日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
应用手册 AN-2102 LM3464 and LM5021 DHC 25W Reference Designs (Rev. A) 2013年 5月 1日
用户指南 AN-2071 LM3464A 4 Channel LED Driver Evaluation Board (Rev. C) 2011年 6月 3日
应用手册 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 最新英语版本 (Rev.A) 2007年 10月 18日

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LM3464EVAL — 4 通道 LED 驱动器评估模块

The LM3464 is a linear LED driver with Dynamic Headroom Control (DHC) technology designed to drive four serial high power / high brightness LED strings. Four individual linear current regulators with low-side N-channel MOSFETs realize regulations of LED currents. The DHC optimizes system efficiency (...)

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  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
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  • 材料成分
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