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ISL97671IRZ

更新时间： 2024-11-14 20:33:19
品牌 Logo 应用领域
瑞萨 - RENESAS 驱动接口集成电路
页数 文件大小 规格书
27页 654K
描述
6-Channel SMBus/I2C or PWM Dimming LED Driver with Phase Shift Control; QFN20; Temp Range: -40° to 85°C

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ISL97671IRZ 技术参数

是否Rohs认证：符合生命周期：Obsolete
零件包装代码：QFN包装说明：HVQCCN, LCC20,.12X.16,20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.69Is Samacsys：N
数据输入模式：SERIAL接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PQCC-N20JESD-609代码：e3
长度：4 mm湿度敏感等级：3
复用显示功能：NO功能数量：1
区段数：6端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC20,.12X.16,20封装形状：RECTANGULAR
封装形式：CHIP CARRIER峰值回流温度（摄氏度）：260
电源：12 V认证状态：Not Qualified
座面最大高度：1 mm子类别：Display Drivers
最大供电电压：26.5 V最小供电电压：4.5 V
标称供电电压：12 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn) - annealed
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3 mmBase Number Matches：1

ISL97671IRZ 数据手册

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6-Channel SMBus/I2C or PWM Dimming LED Driver with  
Phase Shift Control  
ISL97671  
Features  
The ISL97671 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 ISL97671 drives 6 channels of LED to  
support 78 LEDs from 4.5V to 26V or 48 LEDs from a boost  
supply of 2.7V to 26V and a separate 5V bias on the ISL97671  
VIN pin.  
• 6 Channels  
• 4.5V to 26.5V Input  
• 45V Output Max  
• Up to 40mA LED Current per Channel  
• Extensive Dimming Control  
The ISL97671 compensates for non-uniformity of the forward voltage  
drops in the LED strings with its 6 voltage controlled-current source  
channels. Its headroom control monitors the highest LED forward  
voltage string for output regulation, to minimize the voltage headroom  
and power loss in a typical multi-string operation.  
- PWM/DPST Dimming, I2C 8-bit with Equal Phase Shift, and  
0.007% Direct PWM Dimming at 200Hz  
• Optional Master Fault Protection  
• PWM Dimming Linearity 0.4%~100% <30kHz  
• 600kHz/1.2MHz Selectable Switching Frequency  
• Dynamic Headroom Control  
The ISL97671 features optional channel phase shift control to  
minimize the input, output ripple characteristics and load  
transients as well as spreading the light output to help reduce  
the video and audio interference from the backlight driver  
operation. The phase shift can be programmed with equal phase  
angle or adjustable in 7-bit resolution.  
• Protections with Flag Indication  
- String Open/Short Circuit, VOUT Short Circuit, Overvoltage  
and Over-Temperature Protections  
- Optional Master Fault Protection  
• Current Matching ±0.7%  
The ISL97671 has a full range of dimming capabilities that  
include SMBus/I2C controlled PWM dimming or DC dimming. It  
can also do direct PWM dimming with as low as 350ns pulse on  
PWM pin, which translates to a duty-cycle of 0.007% at a 200Hz  
dimming frequency.  
• 20 Ld 4mmx3mm QFN Package  
Applications  
• Notebook Displays WLED or RGB LED Backlighting  
Related Literature  
• See AN1581, “ISL97671/2/3/4IRZ-EVAL Quick Start Guide”  
• LCD Monitor LED Backlighting  
• Automotive Displays LED Backlighting  
• Automotive or Traffic Lighting  
V
= 45V*, 40mA PER STRING  
OUT  
V
= 4.5~26.5V  
IN  
ISL97671  
FAULT  
1
2
4
LX 20  
VIN  
OVP  
16  
VDC  
PGND 19  
CH0 10  
SMBCLK/SCL  
SMBDAT/SDA  
7
6
CH1  
CH2  
CH3  
CH4  
CH5  
11  
12  
13  
14  
15  
5 PWM  
3 EN  
17  
8
RSET  
FPWM  
AGND  
*V > 12V  
IN  
COMP  
9
18  
FIGURE 1. ISL97671 TYPICAL APPLICATION DIAGRAM WITH SMBus/I2C CONTROL  
August 14, 2012  
FN7631.3  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2010-2012. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
 
 
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