®
EL7640A, EL7641A, EL7642A
Data Sheet
May 15, 2006
FN6270.0
PRELIMINARY
TFT-LCD DC/DC with Integrated
Amplifiers
The EL7640A, EL7641A, and EL7642A integrate a high
performance boost regulator with 2 LDO controllers for V
ON
and V
OFF
, a V
ON
-slice circuit with adjustable delay and
either one (EL7640A), three (EL7641A), or five amplifiers
(EL7642A) for V
COM
and V
GAMMA
applications.
The boost converter in the EL7640A, EL7641A, and
EL7642A is a current mode PWM type integrating an 18V
NHchannel MOSFET. Operating at 1.2MHz, this boost can
operate in either P-mode for superior transient response, or
in PI-mode for tighter output regulation.
Using external low-cost transistors, the LDO controllers
provide tight regulation for V
ON
, V
OFF
, as well as providing
start-up sequence control and fault protection.
The amplifiers are ideal for V
COM
and V
GAMMA
applications, with 150mA peak output current drive, 12MHz
bandwidth, and 12V/µs slew rate. All inputs and outputs are
rail-to-rail.
Available in the 32 Ld thin QFN (5mm x 5mm) Pb-free
packages, the EL7640A, EL7641A, and EL7642A are specified
for operation over the -40°C to +85°C temperature range.
Features
• Current mode boost regulator
- Fast transient response
- 1% accurate output voltage
- 18V/3A integrated FET
- >90% efficiency
• 2.6V to 5.5V V
IN
supply
• 2 LDO controllers for V
ON
and V
OFF
- 2% output regulation
- V
ON
-slice circuit
• High speed amplifiers
- 150mA short-circuit output current
- 12V/µs slew rate
- 12MHz -3dB bandwidth
- Rail-to-rail inputs and outputs
• Built-in power sequencing
• Internal soft-start
• Multiple overload protection
• Thermal shutdown
• 32 Ld 5x5 thin QFN package
• Pb-free plus anneal available (RoHS compliant)
PKG.
DWG. #
MDP0051
MDP0051
MDP0051
MDP0051
MDP0051
MDP0051
MDP0051
MDP0051
MDP0051
Ordering Information
PART NUMBER
(Note)
EL7640AILTZ
EL7640AILTZ-T7
PART
TAPE & PACKAGE
MARKING REEL
(Pb-Free)
7640AILTZ
7640AILTZ
-
7”
13”
-
7”
13”
-
7”
13”
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
32 Ld 5x5
Thin QFN
Applications
• TFT-LCD panels
• LCD monitors
• Notebooks
• LCD-TVs
EL7640AILTZ-T13 7640AILTZ
EL7641AILTZ
EL7641AILTZ-T7
7641AILTZ
7641AILTZ
EL7641AILTZ-T13 7641AILTZ
EL7642AILTZ
EL7642AILTZ-T7
7642AILTZ
7642AILTZ
EL7642AILTZ-T13 7642AILTZ
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.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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