ISL97644
®
Data Sheet
April 11, 2006
FN9228.0
Boost + LDO + V Slice + V
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
Features
• 3V to 5.5V Input
ON
COM
• 2.6A Integrated Boost for Up to 20V AVDD
• Integrated VON Slice
A
VDD, 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
- 50V/µs SR
The logic LDO includes a 350mA FET for driving the low
voltage needed by the external digital circuitry.
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
capability. With 30MHz bandwidth and 50V/µs slew rate, the
• Pb-Free Plus Anneal Available (RoHS Compliant)
V
COM amplifier is capable of driving 400mA peaks, and
Applications
100mA continuous output current.
• LCD Monitors (15”+)
Pinout
• Notebook Display (up to 16”)
ISL97644
(24 LD 4x4 QFN)
TOP VIEW
Ordering Information
TEMP.
PART NUMBER
(Note)
PART
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
MARKING
DWG. #
24 23 22 21 20 19
ISL97644IRZ
97644IRZ -40 to +85 24 Ld 4x4 QFN
L24.4x4D
L24.4x4D
GND
1
LX
18
17
16
15
14
13
ISL97644IRZ-T 97644IRZ -40 to +85 24 Ld 4x4 QFN
6k pc Tape & Reel
VGH_M
2
VIN_2
FREQ
COMP
SS
ISL97644IRZ-TK 97644IRZ -40 to +85 24 Ld 4x4 QFN
1k pc Tape & Reel
L24.4x4D
VFLK
VDPM
VDD_1
VDD_2
3
4
5
6
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.
VIN_1
7
8
9
10 11
12
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.