ISL97650 Datasheet, PDF (1/20 Pages) Intersil Corporation – 4-Channel Integrated LCD Supply

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Data Sheet
November 28, 2006
ISL97650
FN9198.3
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
A_VDD generation, an integrated V_ON charge pump, a V_OFF
charge pump driver, V_ON 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
A_VDD -> V_OFF -> V_ON and A_VDD/V_OFF -> V_ON 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 QFN 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
• A_VDD boost up to 20V, with integrated 2.8A FET
• Integrated V_ON charge pump, up to 35V out
• V_OFF charge pump driver, down to -18V
• V_LOGIC buck down to 1.2V, with integrated 2A FET
• Automatic start-up sequencing
- A_VDD -> V_OFF -> V_ON or A_VDD/V_OFF -> V_ON
- Independent logic enable
• V_ON slicing
• Thermally enhanced 6x6 Thin QFN package
• Pb-free plus anneal available (RoHS compliant)
Applications
• LCD monitors (15”+)
• LCD-TVs (up to 40”)
• Notebook displays (up to 16”)
• Industrial/medical LCD displays
Ordering Information
PART NUMBER
PART
(Note)
MARKING
TAPE & PACKAGE PKG.
REEL (Pb-Free) DWG. #
ISL97650ARTZ-T ISL97650ARTZ 13” (4k pcs) 36 Ld 6x6 L36.6x6
Thin QFN
ISL97650ARTZ-TK ISL97650ARTZ 13” (1k pcs) 36 Ld 6x6 L36.6x6
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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2006. All Rights Reserved
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