ISL97642 Datasheet, PDF (1/19 Pages) Intersil Corporation – TFT-LCD DC/DC with Integrated Amplifiers

®
Data Sheet
June 18, 2007
ISL97642
FN6436.0
TFT-LCD DC/DC with Integrated
Amplifiers
The ISL97642 integrates a high performance boost regulator
with 2 LDO controllers for V_ON and V_OFF, a V_ON-slice circuit
with adjustable delay and three amplifiers for V_COM and
V_GAMMA applications.
The boost converter in the ISL97642 is a current mode PWM
type integrating an 18V N-Channel MOSFET.
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 (5mmx5mm) Pb-free package,
the ISL97642 is 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/2.4A 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
Ordering Information
PART NUMBER PART
(Note)
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL97642IRTZ* 97642 IRTZ 32 Ld 5x5x0.75 TQFN L32.5x5A
*Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for
details on reel specifications.
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.
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