EL7640_06 Datasheet, PDF (1/19 Pages) Intersil Corporation – TFT-LCD DC/DC with Integrated Amplifiers

®
Data Sheet
EL7640, EL7641, EL7642
February 22, 2006
FN7415.2
TFT-LCD DC/DC with Integrated
Amplifiers
The EL7640, EL7641, and EL7642 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 (EL7640), three (EL7641), or five amplifiers
(EL7642) for V_COM and V_GAMMA applications.
The boost converter in the EL7640, EL7641, and EL7642 is
a current mode PWM type integrating an 18V N-channel
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 EL7640, EL7641, and EL7642 are specified
for operation over the -40°C to +85°C temperature range.
Ordering Information
PART NUMBER PART TAPE & PACKAGE PKG.
(Note)
MARKING REEL (Pb-Free) DWG. #
EL7640ILTZ
7640ILTZ
- 32 Ld 5x5 MDP0051
Thin QFN
EL7640ILTZ-T7 7640ILTZ
7” 32 Ld 5x5 MDP0051
Thin QFN
EL7640ILTZ-T13 7640ILTZ
13” 32 Ld 5x5 MDP0051
Thin QFN
EL7641ILTZ
7641ILTZ
- 32 Ld 5x5 MDP0051
Thin QFN
EL7641ILTZ-T7 7641ILTZ
7” 32 Ld 5x5 MDP0051
Thin QFN
EL7641ILTZ-T13 7641ILTZ
13” 32 Ld 5x5 MDP0051
Thin QFN
EL7642ILTZ
7642ILTZ
- 32 Ld 5x5 MDP0051
Thin QFN
EL7642ILTZ-T7 7642ILTZ
7” 32 Ld 5x5 MDP0051
Thin QFN
EL7642ILTZ-T13 7642ILTZ
13” 32 Ld 5x5 MDP0051
Thin QFN
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
• 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)
Applications
• TFT-LCD panels
• LCD monitors
• Notebooks
• LCD-TVs
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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