ISL97644
®
Data Sheet
December 14, 2007
FN9228.1
Boost + LDO + V Slice + V
Features
ON
COM
The ISL97644 represents an integrated DC/DC regulator for
monitor and notebook applications with screen sizes up to
20”. The device integrates a boost converter for generating
• 3V to 5.5V Input
• 2.6A Integrated Boost for Up to 20V AVDD
• Integrated VON Slice
AVDD, a VON slice circuit, an integrated logic LDO and a high
performance VCOM amplifier.
• 350mA VLOGIC LDO
The boost converter features a 2.6A FET and has user
programmable soft-start and compensation. With efficiencies
up to 92%, the AVDD is user selectable from 7V to 20V.
- 2.5V, 2.85V, 3.3V Output Voltage Selectable
• 600kHz/1.2MHz fS
• VCOM Amplifier
- 30MHz BW
The logic LDO includes a 350mA FET for driving the low
voltage needed by the external digital circuitry.
- 50V/µs SR
The VON slice circuit can control gate voltages up to 30V.
High and low levels are programmable, as well as discharge
rate and timing.
- 400mA Peak Output Current
• UV and OT Protection
• 24 Ld 4x4 QFN
The integrated VCOM features high speed and drive
• Pb-Free (RoHS Compliant)
capability. With 30MHz bandwidth and 50V/µs slew rate, the
V
COM amplifier is capable of driving 400mA peaks, and
Applications
100mA continuous output current.
• LCD Monitors (15”+)
• Notebook Display (up to 16”)
Pinout
ISL97644
(24 LD 4x4 QFN)
TOP VIEW
Ordering Information
TEMP.
PART NUMBER
(Note)
PART
MARKING
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
24 23 22 21 20 19
ISL97644IRZ
97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
GND
1
LX
18
17
16
15
14
13
ISL97644IRZ-T* 97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
Tape & Reel
VGH_M
2
VIN_2
FREQ
COMP
SS
ISL97644IRZ-TK* 97644IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D
Tape & Reel
VFLK
VDPM
VDD_1
VDD_2
3
4
5
6
*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.
VIN_1
7
8
9
10 11
12
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2006, 2007. All Rights Reserved
1
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