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ISL97671AIRZ-T7

更新时间： 2024-11-14 14:51:39
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
28页 917K
描述
LED DISPLAY DRIVER

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ISL97671AIRZ-T7 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.69接口集成电路类型：LED DISPLAY DRIVER
JESD-609代码：e3湿度敏感等级：3
端子面层：Matte Tin (Sn) - annealedBase Number Matches：1

ISL97671AIRZ-T7 数据手册

 浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第2页浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第3页浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第4页浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第5页浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第6页浏览型号ISL97671AIRZ-T7的Datasheet PDF文件第7页 
6-Channel SMBus/I2C or PWM Dimming LED Driver with  
Phase Shift Control  
ISL97671A  
Features  
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 (see Figure 38).  
• 6 x 50mA channels  
• 4.5V to 26.5V input with max 45V output  
• 3V (see Figure 38) to 21V input with max 26.5V output  
• PWM dimming with phase shift control  
• SMBus/I2C controlled PWM or DC dimming  
• Direct PWM dimming  
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.  
• PWM dimming linearity  
- PWM dimming with adjustable dimming frequency and  
duty cycle linear from 0.4% to 100% <30kHz  
The device can also be configured in Direct PWM Dimming  
with minimum dimming duty cycle of 0.007% at 200Hz.  
- Direct PWM dimming duty cycle linear from 0.007% to  
100% 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.  
• Current matching ±0.7%  
• 600kHz/1.2MHz selectable switching frequency  
• Dynamic headroom control  
• Fault protection  
The ISL97671A is offered in compact and thermally efficient  
20 Ld QFN 4mmx3mm package.  
- String open/short circuit, OVP, OTP, and optional output  
short circuit fault protection  
• 20 Ld 4mmx3mm QFN package  
Applications  
• Tablet PC to notebook displays LED backlighting  
• LCD monitor LED backlighting  
• Field sequential RGB LED backlighting  
Typical Application Circuits  
45V*, 6 x 50mA  
45V*, 6 x 50mA  
45V*, 6 x 50mA  
VIN = 4.5~26.5V  
VIN = 4.5~26.5V  
VIN = 4.5~26.5V  
Q1 (OPTIONAL)  
Q1 (OPTIONAL)  
Q1 (OPTIONAL)  
ISL97671A  
1 FAULT  
ISL97671A  
FAULT  
ISL97671A  
1
2
4
FAULT  
VIN  
1
2
LX 20  
LX 20  
LX 20  
2
VIN  
VIN  
OVP  
OVP  
16  
OVP  
16  
16  
4
8
4
VDC  
VDC  
VDC  
FPWM  
PGND 19  
PGND 19  
PGND 19  
CH0 10  
7
6
7
6
SMBCLK/SCL  
SMBDAT/SDA  
7
6
SMBCLK/SCL  
SMBCLK/SCL  
SMBDAT/SDA  
CH0  
10  
11  
12  
13  
14  
15  
CH0 10  
SMBDAT/SDA  
CH1  
CH2  
CH3  
CH4  
CH5  
CH1  
CH2  
CH3  
CH4  
CH5  
CH1  
CH2  
CH3  
CH4  
CH5  
11  
12  
13  
14  
15  
11  
12  
13  
14  
15  
5
3
PWM  
EN  
5
3
PWM  
EN  
5
3
PWM  
EN  
17  
RSET  
17  
8
17  
8
RSET  
RSET  
FPWM  
FPWM  
*VIN > 12V  
COMP  
*VIN > 12V  
9
18  
AGND  
COMP  
*VIN > 12V  
COMP  
9
18  
9
AGND  
18  
AGND  
FIGURE 1A. SMBus/I2C CONTROLLED  
DIMMING AND ADJUSTABLE  
DIMMING FREQUENCY  
FIGURE 1B. PWM DIMMING WITH PWM INPUT  
AND ADJUSTABLE DIMMING  
FREQUENCY  
FIGURE 1C. DIRECT PWM DIMMING  
FIGURE 1. ISL97671A TYPICAL APPLICATION DIAGRAMS  
November 30, 2012  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011, 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.  
1
FN7709.3  
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