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1
FN9210.1
EL7586, EL7586A
TFT-LCD Power Supply
The EL7586 and EL7586A represent multiple output
regulators for use in all large panel, TFT-LCD applications.
Both feature a single boost converter with an integrated 2A
FET, two positive LDOs for V
ON
and V
LOGIC
generation,
and a single negative LDO for V
OFF
generation. The boost
converter can be programmed to operate in either P-mode
or PI-mode for improved load regulation.
Both EL7586 and EL7586A also integrate fault protection for
all four channels. Once a fault is detected, the device is
latched off until the input supply or EN is cycled. EL7586
also features an integrated start-up sequence for
V
BOOST
/V
LOGIC,
V
OFF
, then V
ON
or for V
LOGIC
, V
OFF
,
V
BOOST
, and V
ON
. The latter requires a single external
transistor. The timing of the start-up sequence is set using
an external capacitor.
EL7586A features an immediately-enabled V
LOGIC
output
which is independent of EN input. The V
LOGIC
output will be
switched off if a fault is detected and the power supply needs
to be recycled to reset this condition.
Both the EL7586 and EL7586A are pin-compatible, come in
the 20 Ld 4x4 QFN package, and are specified for operation
over the -40°C to +85°C temperature range.
Features
2A current limit FET options
3V to 5V input
Up to 20V boost out
1% regulation on all outputs
V
LOGIC
-V
OFF
-V
BOOST
-V
ON
or
V
BOOST
/V
LOGIC
-V
OFF
-V
ON
sequence control
- V
LOGIC
is on from start-up for EL7586A
Programmable sequence delay
Fully fault protected
Thermal shutdown
Internal soft-start
20 Ld 4x4 QFN packages
Pb-free plus anneal available (RoHS compliant)
Applications
LCD monitors (15”+)
LCD-TV (up to 40”+)
Notebook displays (up to 16”)
Industrial/medical LCD displays
Ordering Information
PART NUMBER
PART
MARKING
TAPE &
REEL
PACKAGE
PKG.
DWG. #
EL7586ILZ
(Note)
7586ILZ
-
20 Ld 4x4 QFN
(Pb-free)
MDP0046
EL7586ILZ-T7
(Note)
7586ILZ
7”
20 Ld 4x4 QFN
(Pb-free)
MDP0046
EL7586ILZ-T13
(Note)
7586ILZ
13”
20 Ld 4x4 QFN
(Pb-free)
MDP0046
EL7586AILZ
(Note)
7586AIL Z
-
20 Ld 4x4 QFN
(Pb-free)
MDP0046
EL7586AILZ-T7
(Note)
7586AIL Z
7”
20 Ld 4x4 QFN
(Pb-free)
MDP0046
EL7586AILZ-T13
(Note)
7586AIL Z
13”
20 Ld 4x4 QFN
(Pb-free)
MDP0046
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.
Pinout
EL7586, EL7586A
(20 LD 4X4 QFN)
TOP VIEW
1
2
3
4
15
14
13
12
6
7
8
9
2
1
1
1
CDLY
DELB
LX1
LX2
F
D
F
S
P
V
E
S
CINT
VREF
PGND
PGND
THERMAL
PAD
5
DRVP
1
D
11 FBN
1
Data Sheet
October 7, 2005
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. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.