ISL97651 Datasheet, PDF (1/19 Pages) Intersil Corporation – 4-Channel Integrated LCD Supply

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Data Sheet
April 24, 2009
ISL97651
FN7493.3
4-Channel Integrated LCD Supply
The ISL97651 represents a high power, integrated LCD
supply IC targeted at large panel LCD displays. The
ISL97651 integrates a high power, 4.4A 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 ISL97651 have 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 boost and 92% for buck while
operating from a 4V to 5.5V input supply. The current mode
buck offers superior line and load regulation. Available in the
36 Ld QFN package, the ISL97651 is specified for ambient
operation over the -40°C to +105°C temperature range.
Pinout
ISL97651
(36 LD TQFN)
TOP VIEW
VIN1 1
LX1 2
LX2 3
CB 4
LXL 5
VSUP 6
FBL 7
CM2 8
CTL 9
THERMAL
PAD
27 AGND
26 PGND1
25 PGND2
24 VINL
23 NOUT
22 PGND3
21 FBN
20 VREF
19 FBP
Features
• 4V to 5.5V input supply
• A_VDD boost up to 20V, with integrated 4.4A FET
• Integrated V_ON charge pump, up to 34V_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 thin QFN package (6mmx6mm)
• Pb-free (RoHS compliant)
Applications
• LCD monitors (15”+)
• LCD-TVs (40”+)
• Notebook displays (up to 16”)
• Industrial/medical LCD displays
Ordering Information
PART NUMBER
(Notes 1, 2)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL97651ARTZ-T ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
ISL97651ARTZ-TK ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish,
which is 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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