The ISL97671A is a 6-Channel 45V dual dimming capable LED driver that can be used with either SMBus/I2C or PWM signal for dimming control. The ISL97671A can drive six channels of LEDs from an input of 4. 5V~26. 5V to an output of up to 45V. It can also operate from an input as low as 3V to an output of up to 26. 5V in bootstrap configuration. The ISL97671A features optional channel phase shift control to minimize the input/output ripple characteristics, and load transients to improve efficiency and eliminate audible noise. The device can also be configured for Direct PWM Dimming with a minimum dimming duty cycle of 0. 007% at 200Hz. The ISL97671A headroom control circuit monitors the highest LED forward voltage string for output regulation, to minimize the voltage headroom and power loss in a typical multi-string operation. The ISL97671A is offered in a compact and thermally efficient 20 Ld QFN 4mmx3mm package.

特性

  • 6 x 50mA channels
  • 4.5V to 26.5V input with 45V maximum output
  • 3V to 21V input with 26.5V maximum output
  • PWM dimming with phase shift control
  • SMBus/I2C controlled PWM or DC dimming
  • Direct PWM dimming
  • PWM dimming linearity
  • PWM dimming with adjustable dimming frequency and duty cycle linear from 0.4% to 100% <30kHz
  • Direct PWM dimming duty cycle linear from 0.007% to 100% at 200Hz
  • Current matching ±0.7%
  • 600kHz/1.2MHz selectable switching frequency
  • Dynamic headroom control
  • Fault protection
  • String open/short-circuit, OVP, OTP, and optional output short-circuit fault protection
  • 20 Ld 4mmx3mm QFN package

应用

  • Tablet PC to notebook displays LED backlighting
  • LCD monitor LED backlighting
  • Field sequential RGB LED backlighting

tune产品选择

器件号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 75
Availability
Active QFN Reel 6000
Availability
Active QFN Reel 1000
Availability

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 ISL97671A Datasheet 数据手册 PDF 1.54 MB
使用指南与说明
ISL9767xAIRZ-EVAL User Guide 手册 - 开发工具 PDF 582 KB
PCN / PDN
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

file_download下载

文档标题 language 类型 文档格式 文件大小 日期
软件
ISL97671A Evaluation Kit Software v2.1 ZIP 2.83 MB