FN6474 Rev 1.00

Page 1 of 11

February 22, 2008

FN6474

Rev 1.00

February 22, 2008

ISL97701

Boost Regulator with Integrated Schottky and Input Disconnect Switch

DATASHEET

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.

Pinout

ISL97701

(10 LD 3X3 DFN)

TOP VIEW

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

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.

1

2

3

4

10

9

8

7

5

6

THERMAL

PAD

GND

VDDOUT

VDD

NSYNC

LX

VOUT

NEN

GND

NC

FB

VDDOUT

NEN

NSYNC

GND

5µF

3.3µF

390k



39k



6.8µH

LX

VOUT

FB

NOTE: VOUT = (390k + 39k)/39k*1.15V = 12.65V

VDD

2.3V TO 5.5V