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ISL97650 Datasheet PDF : 20 Pages
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Data Sheet
April 17, 2009
ISL97650
FN9198.4
4-Channel Integrated LCD Supply
The ISL97650 represents a high power, integrated LCD
supply IC targeted at large panel LCD displays. The
ISL97650 integrates a high power, 2.6A boost converter for
AVDD generation, an integrated VON charge pump, a VOFF
charge pump driver, VON slicing circuitry and a buck
regulator with 2A switch for logic generation.
The ISL97650 has been designed for ease of layout and low
BOM cost. Supply sequencing is integrated for both
AVDD -> VOFF -> VON and AVDD/VOFF -> VON sequences.
The TFT power sequence uses a separate enable to the
logic buck regulator for maximum flexibility.
Peak efficiencies are >90% for both the boost and buck while
operating from a 4V to 14V input supply. The current mode
buck offers superior line and load regulation. Available in the
36 Ld TQFN package, the ISL97650 is specified for ambient
operation over the -40°C to +105°C temperature range.
Pinout
ISL97650
(36 LD TQFN)
TOP VIEW
LX1 1
LX2 2
CB 3
LXL 4
NC 5
VSUP 6
FBL 7
CM2 8
CTL 9
THERMAL
PAD
27 AGND1
26 PGND1
25 PGND2
24 VINL
23 NOUT
22 PGND3
21 FBN
20 VREF
19 FBP
Features
• 4V to 14V Input Supply
• AVDD Boost Up to 20V, with Integrated 2.8A FET
• Integrated VON Charge Pump, Up to 35VOUT
• VOFF Charge Pump Driver, Down to -18V
• VLOGIC Buck Down to 1.2V, with Integrated 2A FET
• Automatic Start-up Sequencing
- AVDD -> VOFF -> VON or AVDD/VOFF -> VON
- Independent Logic Enable
• VON Slicing
• Thermally Enhanced 6x6 Thin QFN Package
• Pb-free (RoHS compliant)
Applications
• LCD Monitors (15”+)
• LCD-TVs (up to 40”)
• Notebook Displays (up to 16”)
• Industrial/Medical LCD Displays
Ordering Information
PART NUMBER
(Note)
PART
MARKING
PACKAGE PKG.
(Pb-Free) DWG. #
ISL97650ARTZ-T*
ISL976 50ARTZ 36 Ld 6x6 L36.6x6
Thin TQFN
ISL97650ARTZ-TK*
ISL976 50ARTZ 36 Ld 6x6 L36.6x6
Thin TQFN
*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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All other trademarks mentioned are the property of their respective owners.
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