EL7585A Datasheet, PDF (1/18 Pages) Intersil Corporation – TFT-LCD Power Supply

®
Data Sheet
September 21, 2005
EL7585A
FN7523.2
TFT-LCD Power Supply
The EL7585A represents a multiple output regulators for use
in all large panel, TFT-LCD applications. It features a single
boost converter with integrated 3.5A 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.
The EL7585A also integrates fault protection for all four
channels. Once a fault is detected, the device is latched off
until the input supply or EN is cycled. This device also
features an integrated start-up sequence for V_BOOST, V_OFF,
then V_ON or for V_OFF, V_BOOST, and V_ON sequencing. The
latter requires a single external transistor. The timing of the
start-up sequence is set using an external capacitor. The
V_LOGIC output is constantly enabled, but does shut down
when a fault condition is detected.
The EL7585A is specified for operation over the -40°C to
+85°C temperature range.
Pinout
EL7585A
(20 LD QFN)
TOP VIEW
CDLY 1
DELB 2
LX1 3
LX2 4
DRVP 5
THERMAL
PAD
15 CINT
14 VREF
13 PGND
12 PGND
11 FBN
Features
• 3.5A current limit FET options
• 3V to 5V input
• Up to 20V boost out
• 1% regulation on all outputs
• V_OFF-V_BOOST-V_ON or
V_BOOST-V_OFF-V_ON sequence control
- V_LOGIC is on from start-up for EL7585A
• Programmable sequence delay
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 20 Ld 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
PART NUMBER MARKING
TAPE & PKG.
PACKAGE REEL DWG. #
EL7585AILZ
(Note)
EL7585AIL Z 20 Ld 4x4 QFN - MDP0046
(Pb-free)
EL7585AILZ-T7 EL7585AIL Z 20 Ld 4x4 QFN 7” MDP0046
(Note)
(Pb-free)
EL7585AILZ-T13 EL7585AIL Z 20 Ld 4x4 QFN 13” MDP0046
(Note)
(Pb-free)
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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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