LT3592

• Product Introduction

The LT3592 is a step-down LED driver with a 10:1 dimming ratio of 500mA wide input voltage range

peculiarity

• 3.6V 至 36V 的宽输入电压范围运作
• 可利用电阻器来调节的 400kHz 至 2.2MHz 开关频率
• 短路和开路 LED 保护功能
• 内部开关电流检测电阻器
• 外部电阻器用于设置 LED 电流，引脚选择 10:1 调光比
• 50mA/500mA LED 电流设定值
• 箝位二极管电流检测用于防止在高 V_IN 条件下发生失控现象
• 小外形耐热增强型 10 引脚 DFN (2mm x 3mm) 和 MSOP-10 封装

• description

  ®The LT 3592 is a fixed-frequency step-down DC/DC converter designed to act as a constant current source. An external sense resistor monitors the output current, providing accurate current regulation and is ideal for driving high-current LEDs. An external signal can be used to reduce the output current by a factor of 10 to meet the needs of the night brake light. The high switching frequency allows for the use of small inductors and small ceramic capacitors, thus providing many advantages. The combination of small components and the LT3592's 10-pin DFN leadless surface-mount package saves footprint and cost compared to alternative solutions. The constant switching frequency combined with the low impedance ceramic capacitors creates a low and predictable output ripple. The wide input voltage range of 3.6V to 36V makes the LT3592 suitable for a wide range of applications. The current-mode PWM architecture provides fast transient response and cycle-by-cycle current limiting. The thermal shutdown feature provides additional protection.

• apply

  • 汽车信号照明
  • 工业照明
  • 恒定电流、恒定电压电源