ISL97656 Datasheet, PDF (1/8 Pages) Intersil Corporation – Integrated 4A Switch PWM Step-Up Regulator

®
Data Sheet
April 2, 2010
ISL97656
FN6439.4
Integrated 4A Switch PWM Step-Up
Regulator
The ISL97656 is a high frequency, high efficiency step-up
voltage regulator operated at constant frequency PWM
mode. With an internal 4.0A, 120mΩ MOSFET, it can deliver
up to 2A output current at over 90% efficiency. The
selectable 640kHz and 1.2MHz allows smaller inductors and
faster transient response. An external compensation pin
gives the user greater flexibility in setting frequency
compensation allowing the use of low ESR Ceramic output
capacitors.
When shut down, it draws <1µA of current and can operate
down to 2.3V input supply. These features along with
1.2MHz switching frequency makes it an ideal device for
portable equipment and TFT-LCD displays.
The ISL97656 is available in a 10 Ld TDFN package with a
maximum height of 1.1mm. The device is specified for
operation over the full -40°C to +85°C temperature range.
Pinout
ISL97656
(10 LD TDFN)
TOP VIEW
COMP ₁
FB 2
EN 3
GND ⁴
GND 5
10 ^SS
9 FREQ
8 IN
7 _LX
6 ^LX
Features
• >90% Efficiency
• 4.0A, 120mΩ Power MOSFET
• 2.3V to 6.0V Input
• Up to 24V Output
• 640kHz/1.2MHz Switching Frequency Selection
• Adjustable Soft-Start
• Internal Thermal Protection
• 0.8mm Max Height 10 Ld TDFN Package
• Pb-Free (RoHS Compliant)
• Halogen Free
Applications
• TFT-LCD Displays
• DSL Modems
• PCMCIA Cards
• Digital Cameras
• GSM/CDMA Phones
• Portable Equipment
• Handheld Devices
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL97656IRTZ
656Z
10 Ld TDFN L10.3x3B
ISL97656IRTZ-T*
656Z
10 Ld TDFN L10.3x3B
ISL97656IRTZ-TK* 656Z
10 Ld TDFN L10.3x3B
*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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