ISL97701 Datasheet, PDF (1/10 Pages) Intersil Corporation – Boost Regulator with Integrated Schottky and Input Disconnect Switch

®
Data Sheet
February 22, 2008
ISL97701
FN6474.1
Boost Regulator with Integrated Schottky
and Input Disconnect Switch
The ISL97701 represents a high efficiency boost converter
with integrated boost FET, boost diode and input disconnect
FET.
With an input voltage of 2.3V to 5.5V the ISL97701 has an
output capability of up to 50mA at 18V using integrated
500mA switches. Efficiencies are up to 87%. The
integrated protection FET is used to disconnect the boost
inductor from the input supply whenever an output fault
condition is detected, or when the device is disabled. This
gives 0 output current in the disabled mode, compared to
standard boost converters where current can still flow when
the device is disabled.
The ISL97701 comes in the 10 Ld 3x3 DFN package and is
specified for operation over the -40°C to +85°C temperature
range.
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL97701IRZ
977 01IRZ 10 Ld 3x3 DFN MDP0047
ISL97701IRZ-T7* 977 01IRZ 10 Ld 3x3 DFN MDP0047
ISL97701IRZ-T13* 977 01IRZ 10 Ld 3x3 DFN MDP0047
*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.
Pinout
ISL97701
(10 LD 3X3 DFN)
TOP VIEW
GND ₁
VDDOUT ₂
VDD ₃
NSYNC ₄
FB ₅
THERMAL
PAD
10 ^LX
9 ^VOUT
8 ^NEN
7 ^GND
6 ^NC
Features
• Up to 87% efficiency
• 2.3V to 5.5V input
• Up to 28V output
• 50mA at 18V
• Integrated boost Schottky diode
• Input voltage disconnect switch
• Synchronization input
• Chip enable
• 10 Ld 3x3 DFN package
• Pb-free (RoHS compliant)
Applications
• OLED display power
• LED display power
• Adjustable power supplies
Typical Application Diagram
VDDOUT
2.3V TO 5.5V
VDD
C₀
5µF
NEN
NSYNC
GND
L₁
6.8µH
LX
VOUT
V_DD+2V TO 30V
C₁ R₁
3.3µF _390kΩ
FB
R₂
39kΩ
NOTE: VOUT = (390k + 39k)/39k*1.15V = 12.65V
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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