EL7520 Datasheet, PDF (1/18 Pages) Intersil Corporation – 4-Channel DC/DC Controller

®
Data Sheet
EL7520, EL7520A
July 12, 2005
FN7318.0
4-Channel DC/DC 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
three LDO controllers for V_ON, V_OFF, and V_LOGIC supplies.
They also include integrated start-up sequence and start-up
delay control.
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.
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.
Ordering Information
PART NUMBER
(NOTE)
PACKAGE
(Pb-FREE)
TAPE &
REEL
PKG.
DWG. #
EL7520ILZ
20 Ld 4x4 QFN
-
MDP0046
EL7520ILZ-T7
20 Ld 4x4 QFN
7”
MDP0046
EL7520ILZ-T13
20 Ld 4x4 QFN 13”
MDP0046
EL7520AILZ
20 Ld 4x4 QFN
-
MDP0046
EL7520AILZ-T7
20 Ld 4x4 QFN
7”
MDP0046
EL7520AILZ-T13
20 Ld 4x4 QFN 13”
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.
Features
• Complete TFT-LCD supply controller
- 1MHz PWM boost controller
- V_ON LDO controller
- V_OFF LDO controller
- Logic supply LDO controller
• Integrated start-up sequence for V_LOGIC/V_BOOST, V_OFF,
V_ON or V_LOGIC, V_OFF, V_BOOST, V_ON
- V_LOGIC permanently enabled in 'A version (EL7520A)
• 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
• Low cost
• 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
Pinout
EL7520 AND EL7520A
(20 LD 4X4 QFN)
TOP VIEW
CDLY 1
DRVB 2
PGND 3
ISAD 4
ISIN 5
THERMAL
PAD
15 FBP
14 DRVL
13 FBL
12 DRVN
11 FBN
1
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.