EL7520, EL7520A
®
Data Sheet
July 12, 2005
FN7318.0
4-Channel DC/DC Controller
Features
• Complete TFT-LCD supply controller
- 1MHz PWM boost controller
EL7520 and EL7520A are 4-channel DC/DC controllers that
provide a complete power supply system for TFT-LCD
applications. They consist of a 1MHz PWM boost controller,
which generates the main voltage for the column driver, and
- V
- V
LDO controller
ON
LDO controller
OFF
three LDO controllers for V , V
They also include integrated start-up sequence and start-up
delay control.
, and V supplies.
ON OFF
LOGIC
- Logic supply LDO controller
• Integrated start-up sequence for V
/V
, V
LOGIC BOOST OFF,
V
or V
, V , V , V
ON
LOGIC OFF BOOST ON
EL7520 and EL7520A operate from 3V to 5.5V. The boost
controller can drive a wide range of output current
depending on the external FET. It can be programmed to
operate in either P-mode for fast transient response or PI-
mode for improved load regulation. The EL7520 and
EL7520A also integrate fault protection for all four output
channels. When a fault is detected, the device is latched off
until either the input supply voltage or enable is cycled.
Therefore, they are ideal to use in any size of TFT-LCD
panels.
- V
permanently enabled in 'A version (EL7520A)
LOGIC
• Programmable sequence delay
• In-rush current control
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 3V to 5.5V V
DD
• 20 Ld 4x4 QFN package
The EL7520 and EL7520A are available in a 20 Ld 4x4 QFN
package with maximum height of 0.9mm and is specified for
operation of the -40°C to +85°C temperature range.
• Low cost
• Pb-Free plus anneal available (RoHS compliant)
Ordering Information
Applications
• LCD monitors (15”+)
PART NUMBER
PACKAGE
TAPE &
REEL
PKG.
(NOTE)
(Pb-FREE)
DWG. #
• LCD-TV (up to 40”+)
EL7520ILZ
20 Ld 4x4 QFN
20 Ld 4x4 QFN
20 Ld 4x4 QFN
20 Ld 4x4 QFN
20 Ld 4x4 QFN
20 Ld 4x4 QFN
-
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
EL7520ILZ-T7
EL7520ILZ-T13
EL7520AILZ
7”
• Notebook displays (up to 16”)
• Industrial/medical LCD displays
13”
-
Pinout
EL7520AILZ-T7
EL7520AILZ-T13
7”
EL7520 AND EL7520A
(20 LD 4X4 QFN)
TOP VIEW
13”
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.
CDLY
DRVB
PGND
ISAD
ISIN
1
2
3
4
5
15 FBP
14 DRVL
13 FBL
THERMAL
PAD
12 DRVN
11 FBN
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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