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EL7581 Datasheet

  • EL7581

  • 3-Channel DC-DC Converter

  • 836.00KB

  • 17頁

  • INTERSIL   INTERSIL

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廬
EL7581
Data Sheet
April 16, 2004
FN7100.4
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 V
ON
and V
OFF
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 V
ON
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-pin HTSSOP package and
is specified for operation over the full -40擄C to +85擄C
temperature range.
Features
鈥?TFT/LCD display supply
- Boost regulator
- V
ON
charge pump
- V
OFF
charge pump
鈥?2.7V to 14V V
IN
supply
鈥?5V < V
BOOST
< 17V
鈥?5V < V
ON
< 40V
鈥?-40V < V
OFF
< 0V
鈥?V
BOOST
= 12V @ 720mA
鈥?V
BOOST
= 15V @ 570mA
鈥?High frequency, small inductor DC-DC boost circuit
鈥?Over 90% efficient DC-DC boost converter capability
鈥?Adjustable frequency
鈥?Adjustable soft-start
鈥?Adjustable outputs
Ordering Information
PART
NUMBER
EL7581IRE
EL7581IRE-T7
EL7581IRE-T13
EL7581IREZ
(Note)
EL7581IREZ-T7
(Note)
EL7581IREZ-T13
(Note)
PACKAGE
20-Pin HTSSOP
20-Pin HTSSOP
20-Pin HTSSOP
20-Pin HTSSOP
(Pb-Free)
20-Pin HTSSOP
(Pb-Free)
20-Pin HTSSOP
(Pb-Free)
TAPE &
REEL
-
7鈥?/div>
13鈥?/div>
-
7鈥?/div>
13鈥?/div>
PKG. DWG. #
MDP0048
MDP0048
MDP0048
MDP0048
MDP0048
MDP0048
鈥?Small parts count
Applications
鈥?TFT-LCD panels
鈥?PDAs
Pinout
EL7581
(20-PIN HTSSOP)
TOP VIEW
VSSB 1
SS 2
FBB 3
VDDB 4
LX 5
LX 6
LX 7
DRVN 8
VDDN 9
FBN 10
20 ROSC
19 ENP
18 ENBN
17 VREF
16 PGND
15 PGND
14 DRVP
13 VDDP
12 FBP
11 VSSP
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.
THERMAL
PAD*
*Refer to PCB layout guideline.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 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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