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EL7581IRE

更新时间： 2024-11-17 22:50:59
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英特矽尔 - INTERSIL 转换器
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17页 790K
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3-Channel DC-DC Converter

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EL7581IRE 数据手册

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EL7581  
®
Data Sheet  
April 16, 2004  
FN7100.4  
3-Channel DC-DC Converter  
Features  
• TFT/LCD display supply  
- Boost regulator  
The EL7581 is a 3-channel DC-DC  
converter IC which is designed  
primarily for use in TFT/LCD  
applications. It features a PWM boost converter with 2.7V to  
14V input capability and 5V to 17V output, which powers the  
column drivers and provides up to 720mA @12V, 570mA @  
15V from 5V input. A pair of charge pump control circuits  
- V  
- V  
charge pump  
ON  
charge pump  
OFF  
• 2.7V to 14V V supply  
IN  
• 5V < V  
• 5V < V  
< 17V  
BOOST  
provide regulated outputs of V  
and V supplies at 8V  
ON  
OFF  
< 40V  
ON  
to 40V and -5V to -40V, respectively, each at up to 60mA.  
• -40V < V  
< 0V  
OFF  
The EL7581 features adjustable switching frequency,  
adjustable soft start, and a separate output V  
ON  
control to allow selection of supply start-up sequence. An  
over-temperature feature is provided to allow the IC to be  
automatically protected from excessive power dissipation.  
• V  
= 12V @ 720mA  
= 15V @ 570mA  
enable  
BOOST  
• V  
BOOST  
• High frequency, small inductor DC-DC boost circuit  
• Over 90% efficient DC-DC boost converter capability  
• Adjustable frequency  
The EL7581 is available in a 20-pin HTSSOP package and  
is specified for operation over the full -40°C to +85°C  
temperature range.  
• Adjustable soft-start  
Ordering Information  
• Adjustable outputs  
• Small parts count  
PART  
TAPE &  
REEL  
NUMBER  
PACKAGE  
PKG. DWG. #  
MDP0048  
MDP0048  
MDP0048  
MDP0048  
Applications  
• TFT-LCD panels  
• PDAs  
EL7581IRE  
20-Pin HTSSOP  
20-Pin HTSSOP  
20-Pin HTSSOP  
-
7”  
13”  
-
EL7581IRE-T7  
EL7581IRE-T13  
EL7581IREZ  
(Note)  
20-Pin HTSSOP  
(Pb-Free)  
Pinout  
EL7581  
(20-PIN HTSSOP)  
TOP VIEW  
EL7581IREZ-T7  
(Note)  
20-Pin HTSSOP  
(Pb-Free)  
7”  
MDP0048  
MDP0048  
EL7581IREZ-T13 20-Pin HTSSOP  
(Note) (Pb-Free)  
13”  
VSSB  
SS  
1
2
3
4
5
6
7
8
9
20 ROSC  
19 ENP  
NOTE: Intersil Pb-Free products employ special Pb-free material  
sets; molding compounds/die attach materials and 100% matte tin  
plate termination finish, which is 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-020B.  
FBB  
VDDB  
LX  
18 ENBN  
17 VREF  
16 PGND  
15 PGND  
14 DRVP  
13 VDDP  
12 FBP  
THERMAL  
PAD*  
LX  
LX  
DRVN  
VDDN  
FBN 10  
11 VSSP  
*Refer to PCB layout guideline.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.  
All other trademarks mentioned are the property of their respective owners.  
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