ISL97650B Datasheet, PDF (1/20 Pages) Intersil Corporation – 4-Channel Integrated LCD Supply

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Data Sheet
March 22, 2010
ISL97650B
FN6748.1
4-Channel Integrated LCD Supply
The ISL97650B represents a high power, integrated LCD
supply IC targeted at large panel LCD displays. The
ISL97650B integrates a high power, 3.2A 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 ISL97650B 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 4.2V to 14V input supply. The current mode
buck offers superior line and load regulation. Available in the
36 Ld TQFN package, the ISL97650B is specified for ambient
operation over the -40°C to +105°C temperature range.
Pinout
ISL97650B
(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
• 4.2V to 14V Input Supply
• A_VDD Boost up to 20V, With Integrated 3.2A 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 (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
Tape & Reel
(Pb-Free)
PKG.
DWG. #
ISL97650BIRTZ-T* ISL976 50BIRTZ 36 Ld 6x6 TQFN L36.6x6
ISL97650BIRTZ-TK* ISL976 50BIRTZ 36 Ld 6x6 TQFN L36.6x6
*Please refer to TB347 for details on reel specifications.
NOTE: 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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