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onsemi NCV7691 电流控制器

onsemi NCV761 电流控制器设有外部 NPN 双极器件来驱动 LED. 使用具有 双极 晶体管的外部电阻器来编程 LED 亮度水平，从而增加电流范围。  NCV7691 控制器 LED 驱动器，可以灵活地向多通道系统中增加 单通道 。 特性包括脉冲宽度调制 (PWM) 控制、多个 LED 灯串控制、开路 LED 灯串以及短路 LED 灯串诊断。 该款电流控制器无铅并符合汽车级 Q100 标准。 TNCV7691 非常适合用于汽车 LED 灯、汽车组合尾灯 (RCL)、雾灯和汽车线性电流 LED 驱动器。

特性

  • Constant current output for LED string drive
  • External bipolar device for wide current range flexibility
  • BCP56 transistor can drive multiple strings concurrently
  • External programming current resistor
  • PWM control
  • Negative temperature coefficient current control option
  • Open LED string diagnostic
  • Short−circuit LED string diagnostic
  • Multiple LED string control
  • Overvoltage set back power limitation
  • SOIC−8 package
  • AEC−Q100 qualified and Production Part Approval Process (PPAP) capable
  • Pb−Free devices

规范

  • -55ºC to 150ºC of Junction temperature (TJ)
  • 4V (typical) under-voltage lockout
  • 15ºC (typical ) of thermal hysteresis
  • 100KHz (typical) of unity-gain bandwidth
  • -0.3V to 50V DC supply voltage (VS)

应用

  • Rear Combination Lamps (RCL)
  • Daytime Running (DR) lights 
  • Center High Mounted Stop Lamps (CHMSL) arrays
  • Turn signal and other externally modulated applications
  • General automotive linear current LED driver

Block Diagram

框图 - onsemi NCV7691 电流控制器

NCV7691 Negative Temperature Coefficient

onsemi NCV7691 电流控制器
发布日期: 2017-01-03 | 更新日期: 2022-03-11