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EL7581 Datasheet(PDF) 1 Page - Intersil Corporation

Part No. EL7581
Description  3-Channel DC/DC Converter
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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EL7581 Datasheet(HTML) 1 Page - Intersil Corporation

 
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1
®
FN7100.5
EL7581
3-Channel DC/DC Converter
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 provide
regulated outputs of VON and VOFF supplies at 8V to 40V
and -5V to -40V, respectively, each at up to 60mA.
The EL7581 features adjustable switching frequency,
adjustable soft start, and a separate output VON enable
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.
The EL7581 is available in a 20 Ld HTSSOP package and is
specified for operation over the full -40°C to +85°C
temperature range.
Features
• TFT/LCD display supply
- Boost regulator
-VON charge pump
-VOFF charge pump
• 2.7V to 14V VIN supply
•5V < VBOOST < 17V
•5V < VON < 40V
• -40V < VOFF < 0V
•VBOOST = 12V @ 720mA
•VBOOST = 15V @ 570mA
• High frequency, small inductor DC/DC boost circuit
• Over 90% efficient DC/DC boost converter capability
• Adjustable frequency
• Adjustable soft-start
• Adjustable outputs
• Small parts count
• Pb-free plus anneal available (RoHS compliant)
Applications
• TFT-LCD panels
•PDAs
Pinout
EL7581
(20 LD HTSSOP)
TOP VIEW
Ordering Information
PART
NUMBER
PART
MARKING
TAPE &
REEL
PACKAGE
PKG.
DWG. #
EL7581IRE
7581IRE
-
20 Ld HTSSOP MDP0048
EL7581IRE-T7
7581IRE
7”
20 Ld HTSSOP MDP0048
EL7581IRE-T13
7581IRE
13”
20 Ld HTSSOP MDP0048
EL7581IREZ
(Note)
7581IREZ
-
20 Ld HTSSOP
(Pb-Free)
MDP0048
EL7581IREZ-T7
(Note)
7581IREZ
7”
20 Ld HTSSOP
(Pb-Free)
MDP0048
EL7581IREZ-T13
(Note)
7581IREZ
13”
20 Ld HTSSOP
(Pb-Free)
MDP0048
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.
THERMAL
PAD*
ROSC
ENP
ENBN
VREF
PGND
PGND
DRVP
VDDP
FBP
VSSP
VSSB
SS
FBB
VDDB
LX
LX
LX
DRVN
VDDN
FBN
*Refer to PCB layout guideline.
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Data Sheet
March 9, 2006
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. 2004, 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.


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