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ISL97634 PDF预览

ISL97634

更新时间: 2024-09-26 04:44:59
品牌 Logo 应用领域
英特矽尔 - INTERSIL 驱动器
页数 文件大小 规格书
10页 472K
描述
White LED Driver with Wide PWM Dimming Range

ISL97634 数据手册

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ISL97634  
®
Data Sheet  
April 10, 2007  
FN6264.2  
White LED Driver with Wide PWM  
Dimming Range  
Features  
• Drives Up to 6 LEDs in Series  
The ISL97634 represents an efficient and highly integrated  
PWM boost LED driver that is suitable for 1.8” to 3.5” LCDs  
that employ 2 to 6 white LEDs for backlighting. With  
integrated Schottky diode, OVP, and wide range of PWM  
dimming capability, the ISL97634 provides a simple, reliable,  
and flexible solution to the backlight designers.  
• OVP (14V, 18V, and 26V for 3, 4 and 6 LEDs Applications)  
• PWM Dimming Control From DC to 32kHz  
• Output Disconnect Switch  
• Integrated Schottky Diode  
• 2.4V to 5.5V Input  
The ISL97634 features a wide range of PWM dimming  
control capability. It allows dimming frequency as low as DC  
to 32kHz beyond audible spectrum. The ISL97634 also  
features a feedback disconnect switch to prevent the output  
from being modulated by the PWM dimming signal that  
minimizes system disturbance.  
• 85% Efficiency  
• 1.4MHz Switching Frequency Allows Small LC  
• 1µA Shutdown Current  
• Internally Compensated  
The ISL97634 is available in the 8 Ld TDFN (2mmx3mm)  
package. There are 14V, 18V, and 26V OVP options that are  
suitable for 3 LEDS, 4 LEDs, and 6 LEDs backlight  
applications respectively. The ISL97634 is specified for  
operation over the -40°C to +85°C ambient temperature at  
input voltage from 2.4V to 5.5V.  
• 8 Ld TDFN (2mmx3mm)  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
Applications  
• LED Backlighting for:  
- Cell phones  
Pinout  
- Smartphones  
- MP3  
ISL97634  
(8 LD TDFN)  
TOP VIEW  
- PMP  
- Automotive Navigation Panel  
- Portable GPS  
GND  
LX  
1
2
3
4
8
7
6
5
VIN  
PWM/EN  
NC  
VOUT  
FBSW  
FB  
Ordering Information  
PART  
NUMBER  
(Note)  
TAPE &  
REEL  
MARKING (QTY)  
PART  
PACKAGE  
(Pb-free)  
PKG.  
DWG. #  
ISL97634IRT14Z-T ELE  
ISL97634IRT14Z-TK ELE  
ISL97634IRT18Z-T ELF  
ISL97634IRT18Z-TK ELF  
ISL97634IRT26Z-T ELG  
ISL97634IRT26Z-TK ELG  
13”  
(6k pcs.)  
8 Ld 2x3 TDFN L8.2x3A  
8 Ld 2x3 TDFN L8.2x3A  
8 Ld 2x3 TDFN L8.2x3A  
8 Ld 2x3 TDFN L8.2x3A  
8 Ld 2x3 TDFN L8.2x3A  
8 Ld 2x3 TDFN L8.2x3A  
Typical Application Circuit  
13”  
(1k pcs.)  
10µH or 22µH  
VIN  
13”  
(6k pcs.)  
LX  
VIN  
13”  
(1k pcs.)  
PWM/EN  
NC  
VOUT  
13”  
(6k pcs.)  
FBSW  
FB  
13”  
(1k pcs.)  
GND  
NOTE: Intersil Pb-free plus anneal products employ special Pb-free  
material sets; molding compounds/die attach materials and 100% matte  
tin plate termination finish, which are RoHS compliant and compatible  
with both SnPb and Pb-free soldering operations. Intersil Pb-free  
products are MSL classified at Pb-free peak reflow temperatures that  
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2006-2007. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  

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