The ISL97672A is an integrated 6-channel power LED driver for LCD backlight applications. The ISL97672A is capable of driving LEDs with input from 4. 5V to 26. 5V and maximum output up to 45V. The ISL97672A employs an adaptive boost switching architecture that allows Direct PWM dimming with dimming duty cycle as low as 0. 007% at 200Hz or 0. 8% at 20kHz. PWM Dimming frequency can be as high as 30kHz. The ISL97672A employs the dynamic headroom control that monitors the highest LED forward voltage string for output regulation to minimize headroom voltage and power loss in a typical multi-string operation. Typical current matching between channels is ±0. 7%. The ISL97672A incorporates extensive protection functions that flag whenever a fault occurs. The protections include string-open and short-circuit detections, OVP, OTP, and an optional output short-circuit protection with external fault disconnect switch. The ISL97672A is offered in a compact 20 Ld QFN 3x4 package and can operate in ambient temperatures of -40°C to +85°C.

特性

  • 6 x 50mA Channels
  • 4.5V to 26.5V Input
  • 45V Output Max
  • Adaptive Boost Switching Architecture
  • Direct PWM Dimming with Dimming Linearity of 0.007%~100% at 200Hz or 0.8%~100% <20kHz
  • Adjustable 200kHz to 1.4MHz Switching Frequency
  • Dynamic Headroom Control
  • Fault Protections with Latched Flag Indication
  • String Open/Short Circuit
  • OVP
  • OTP
  • Optional Output Short-Circuit Fault Protection Switch
  • Current Matching ±0.7%
  • 20 Ld 3x4 QFN Package

应用

  • Notebook Displays LED Backlighting
  • LCD Monitor LED Backlighting
  • Multi-Function Printer Scanning Light Source

description文档

文档标题 language 类型 文档格式 文件大小 日期
数据手册与勘误表
star ISL97672A Datasheet 数据手册 PDF 1.10 MB
使用指南与说明
ISL9767xAIRZ-EVAL User Guide 手册 - 开发工具 PDF 582 KB
PCN / PDN
PLC21035 - End of Life Notice Product Life Cycle Notice PDF 1.17 MB
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products 产品变更通告 PDF 327 KB
PCN13005 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - Carsem (CAS) Ipoh, Malaysia 产品变更通告 PDF 84 KB