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1
FN6270.0
PRELIMINARY
EL7640A, EL7641A, EL7642A
TFT-LCD DC/DC with Integrated
Amplifiers
The EL7640A, EL7641A, and EL7642A integrate a high
performance boost regulator with 2 LDO controllers for VON
and VOFF, a VON-slice circuit with adjustable delay and
either one (EL7640A), three (EL7641A), or five amplifiers
(EL7642A) for VCOM and VGAMMA 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 VON, VOFF, as well as providing
start-up sequence control and fault protection.
The amplifiers are ideal for VCOM and VGAMMA
applications, with 150mA peak output current drive, 12MHz
bandwidth, and 12V/
s 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 VIN supply
2 LDO controllers for VON and VOFF
- 2% output regulation
-VON-slice circuit
High speed amplifiers
- 150mA short-circuit output current
-12V/
s 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)
Applications
TFT-LCD panels
LCD monitors
Notebooks
LCD-TVs
Ordering Information
PART NUMBER
(Note)
PART
MARKING
TAPE &
REEL
PACKAGE
(Pb-Free)
PKG.
DWG. #
EL7640AILTZ
7640AILTZ
-
32 Ld 5x5
Thin QFN
MDP0051
EL7640AILTZ-T7
7640AILTZ
7”
32 Ld 5x5
Thin QFN
MDP0051
EL7640AILTZ-T13
7640AILTZ
13”
32 Ld 5x5
Thin QFN
MDP0051
EL7641AILTZ
7641AILTZ
-
32 Ld 5x5
Thin QFN
MDP0051
EL7641AILTZ-T7
7641AILTZ
7”
32 Ld 5x5
Thin QFN
MDP0051
EL7641AILTZ-T13
7641AILTZ
13”
32 Ld 5x5
Thin QFN
MDP0051
EL7642AILTZ
7642AILTZ
-
32 Ld 5x5
Thin QFN
MDP0051
EL7642AILTZ-T7
7642AILTZ
7”
32 Ld 5x5
Thin QFN
MDP0051
EL7642AILTZ-T13
7642AILTZ
13”
32 Ld 5x5
Thin QFN
MDP0051
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.
Data Sheet
May 15, 2006
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. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.