EL7584 Datasheet, PDF (1/16 Pages) Intersil Corporation – 4-Channel DC:DC Converter

®
Data Sheet
February 4, 2005
EL7584
FN7317.2
4-Channel DC/DC Converter
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_ON and V_OFF supplies at 5V to 40V and 0V to -40V,
respectively, each at up to 60mA for V_BOOST = 15V. The
V_COM buffer provides up to 50mA continuous output current
from 2V to 13V.
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.
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.
Pinout
EL7584
(24-PIN TSSOP)
TOP VIEW
SS 1
FBB 2
EN 3
VDDB 4
LX1 5
LX2 6
VSSN 7
DRVN 8
VDDN 9
FBN 10
DP 11
INC 12
24 VSSB
23 ROSC
22 VREF
21 PGND
20 PGND
19 VSSP
18 DRVP
17 VDDP
16 FBP
15 VSSC
14 VCOM
13 VDDC
Features
• TFT-LCD display supply
- Boost regulator
- V_COM buffer
- V_ON charge pump
- V_OFF charge pump
• 2V to 14V V_IN supply
• 5V < V_BOOST < 17V
• 2V < V_COM < 13V
• 5V < V_ON < 40V
• -40V < V_OFF < 0V
• V_BOOST = 15V @ 370mA
• High frequency, small inductor DC/DC boost circuit
• Over 90% efficient DC/DC boost converter capability
• Built-in power-up sequence with adjustable V_ON delay
• Adjustable frequency
• Adjustable soft-start
• Adjustable outputs
• Over-temperature protection
• Small parts count
• Pb-free available (RoHS compliant)
Applications
• TFT-LCD panels
• PDAs
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL PKG. DWG. #
EL7584IR
24-Pin TSSOP
-
MDP0044
EL7584IR-T7 24-Pin TSSOP
7”
MDP0044
EL7584IR-T13 24-Pin TSSOP
13”
MDP0044
EL7584IRZ
24-Pin TSSOP
-
(See Note)
(Pb-free)
MDP0044
EL7584IRZ-T7 24-Pin TSSOP
7”
(See Note)
(Pb-free)
MDP0044
EL7584IRZ- 24-Pin TSSOP
13”
T13 (See Note) (Pb-free)
MDP0044
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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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