EL7583
®
Data Sheet
May 12, 2006
FN7335.5
3-Channel DC/DC Converter
Features
The EL7583 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 470mA @ 12V, 370mA @ 15V
from 5V supply. A pair of charge pump control circuits
• TFT-LCD display supply
- Boost regulator
- V
- V
charge pump
ON
charge pump
OFF
• 2.7V to 14V V supply
IN
provide regulated outputs of V
to 40V and -5V to -40V, respectively, each at up to 60mA.
and V supplies at 8V
• 5V < V
< 17V
ON
OFF
BOOST
• 5V < V
< 40V
ON
The EL7583 features adjustable switching frequency,
• -40V < V
< 0V
OFF
adjustable soft start, and a separate output V
ON
enable
• V
= 12V @ 470mA
= 15V @ 370mA
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.
BOOST
• V
BOOST
• High frequency, small inductor DC/DC boost circuit
• Over 90% efficient DC/DC boost converter capability
• Adjustable frequency
The EL7583 is available in a standard 20 Ld TSSOP
package and the Pb-free 20 Ld HTSSOP package. Both are
specified for operation over the full -40°C to +85°C
temperature range.
• Adjustable soft-start
Ordering Information
• Adjustable outputs
• Small parts count
PART
PART
TAPE &
PKG.
NUMBER
MARKING REEL
PACKAGE
DWG. #
• Pb-free plus anneal available (RoHS compliant)
EL7583IR
7583IR
7583IR
7583IR
7583IREZ
-
7”
13”
-
20 Ld TSSOP MDP0044
20 Ld TSSOP MDP0044
20 Ld TSSOP MDP0044
Applications
• TFT-LCD panels
• PDAs
EL7583IR-T7
EL7583IR-T13
EL7583IREZ
(See Note)
20 Ld HTSSOP MDP0048
(Pb-free)
Pinout
EL7583IREZ-T7 7583IREZ
(See Note)
7”
20 Ld HTSSOP MDP0048
(Pb-free)
EL7583
(20 LD TSSOP/HTSSOP)
TOP VIEW
EL7583IREZ-T13 7583IREZ
(See Note)
13”
20 Ld HTSSOP MDP0048
(Pb-free)
1
2
20
19
18
17
16
15
14
13
12
11
VSSB
SS
ROSC
ENP
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.
3
FBB
VDDB
LX
ENBN
VREF
PGND
PGND
DRVP
VDDP
FBP
4
5
6
LX
7
LX
8
DRVN
VDDN
FBN
9
10
VSSP
REFER TO PCB LAYOUT GUIDELINE
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. 2003, 2005-2006. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.