EL7641A Datasheet PDF - Intersil Corporation
| Part Number | EL7641A | |
| Description | (EL7640A - EL7642A) TFT-LCD DC/DC | |
| Manufacturers | Intersil Corporation | |
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®
PRELIMINARY
Data Sheet
EL7640A, EL7641A, EL7642A
May 15, 2006
FN6270.0
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/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
www.DataSheet4U.com
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. #
EL7640AILTZ
7640AILTZ - 32 Ld 5x5 MDP0051
Thin QFN
EL7640AILTZ-T7 7640AILTZ 7” 32 Ld 5x5 MDP0051
Thin QFN
EL7640AILTZ-T13 7640AILTZ 13” 32 Ld 5x5 MDP0051
Thin QFN
EL7641AILTZ
7641AILTZ - 32 Ld 5x5 MDP0051
Thin QFN
EL7641AILTZ-T7 7641AILTZ 7” 32 Ld 5x5 MDP0051
Thin QFN
EL7641AILTZ-T13 7641AILTZ 13” 32 Ld 5x5 MDP0051
Thin QFN
EL7642AILTZ
7642AILTZ - 32 Ld 5x5 MDP0051
Thin QFN
EL7642AILTZ-T7 7642AILTZ 7” 32 Ld 5x5 MDP0051
Thin QFN
EL7642AILTZ-T13 7642AILTZ 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 VIN supply
• 2 LDO controllers for VON and VOFF
- 2% output regulation
- VON-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
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. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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EL7640A, EL7641A, EL7642A
Electrical Specifications VIN = 3V, VBOOST = VSUP = 12V, VSRC = 20V, Over temperature from -40°C to 85°C.
Unless Otherwise Specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP
VON-SLICE CIRCUIT
VLO CTL Input Low Voltage
VHI CTL Input High Voltage
ILEAKCTL
CTL Input Leakage Current
tDrise
CTL to OUT Rising Prop Delay
VIN = 2.6V to 5.5V
VIN = 2.6V to 5.5V
CTL = AGND or IN
0.6VIN
-1
1kΩ from DRN to 8V, VCTL = 0V to 3V step,
no load on OUT, measured from VCTL = 1.5V
to OUT = 20%
100
tDfall
CTL to OUT Falling Prop Delay
1kΩ from DRN to 8V, VCTL = 3V to 0V step,
no load on OUT, measured from VCTL = 1.5V
to OUT = 80%
100
VSRC
ISRC
SRC Input Voltage Range
SRC Input Current
Start-up sequence not completed
150
Start-up sequence completed
150
RONSRC
RONDRN
RONCOM
SEQUENCING
SRC On Resistance
DRN On Resistance
COM to GND On Resistance
Start-up sequence completed
Start-up sequence completed
Start-up sequence not completed
5
30
350 1000
tON Turn On Delay
tDEL1
Delay Between VBOOST and VOFF
tDEL2
Delay Between VON and VOFF
tDEL3
Delay From VON to VON-slice Enabled
CDEL
Delay Capacitor
NOTE:
1. Guaranteed by design.
CDEL = 100nF (See Figure 23)
CDEL = 100nF (See Figure 23)
CDEL = 100nF (See Figure 23)
CDEL = 100nF (See Figure 23)
10
10
10
10
22 100
MAX
0.4VIN
1
30
250
250
10
60
1800
UNIT
V
V
µA
ns
ns
V
µA
µA
Ω
Ω
Ω
ms
ms
ms
ms
nF
5 FN6270.0
May 15, 2006
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for EL7641A electronic component. |
| Information | Total 19 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ EL7641A.PDF Datasheet ] | |
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