EL7584
®
Data Sheet
February 4, 2005
FN7317.2
4-Channel DC/DC Converter
Features
• TFT-LCD display supply
- Boost regulator
The EL7584 is a 4-channel DC/DC converter IC which is
designed primarily for use in TFT-LCD applications. The
boost converter has 2V to 14V input capability and provides
5V to 17V output, which powers the column drivers and
provides up to 370mA @ 15V. A pair of charge pump control
circuits provide outputs to allow the external generation of
- V
- V
- V
buffer
charge pump
charge pump
COM
ON
OFF
• 2V to 14V V supply
IN
V
and V
supplies at 5V to 40V and 0V to -40V,
= 15V. The
buffer provides up to 50mA continuous output current
ON
OFF
respectively, each at up to 60mA for V
BOOST
• 5V < V
• 2V < V
• 5V < V
< 17V
BOOST
V
COM
from 2V to 13V.
< 13V
COM
< 40V
ON
The EL7584 features adjustable switching frequency and on-
chip power sequence to simplify start-up operation. A
separate input is available to externally increase the default
delay of the positive charge pump. An over-temperature
feature is provided to allow the IC to be automatically
protected from excessive power dissipation.
• -40V < V
OFF
< 0V
• V
BOOST
= 15V @ 370mA
• High frequency, small inductor DC/DC boost circuit
• Over 90% efficient DC/DC boost converter capability
The EL7584 is available in a 24-pin TSSOP package and is
specified for operation over the full -40°C to +85°C
temperature range.
• Built-in power-up sequence with adjustable V
• Adjustable frequency
delay
ON
• Adjustable soft-start
Pinout
• Adjustable outputs
EL7584
(24-PIN TSSOP)
TOP VIEW
• Over-temperature protection
• Small parts count
• Pb-free available (RoHS compliant)
SS
FBB
1
2
3
4
5
6
7
8
9
24 VSSB
23 ROSC
22 VREF
21 PGND
20 PGND
19 VSSP
18 DRVP
17 VDDP
16 FBP
Applications
• TFT-LCD panels
• PDAs
EN
VDDB
LX1
Ordering Information
PART
LX2
NUMBER
PACKAGE
24-Pin TSSOP
24-Pin TSSOP
TAPE & REEL PKG. DWG. #
VSSN
DRVN
VDDN
EL7584IR
EL7584IR-T7
-
7”
13”
-
MDP0044
MDP0044
MDP0044
MDP0044
EL7584IR-T13 24-Pin TSSOP
EL7584IRZ
(See Note)
24-Pin TSSOP
(Pb-free)
FBN 10
DP 11
15 VSSC
14 VCOM
13 VDDC
EL7584IRZ-T7 24-Pin TSSOP
7”
MDP0044
MDP0044
(See Note)
(Pb-free)
INC 12
EL7584IRZ-
T13 (See Note)
24-Pin TSSOP
(Pb-free)
13”
NOTE: Intersil Pb-free 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 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
1
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