ISL12022M-R5421 datasheet(13/20 Pages) INTERSIL

13 / 20 page

INTERSIL SELECTION GUIDE | INDUSTRIAL PROCESS CONTROL SOLUTIONS

PLC

www.intersil.com/industrial_process_control | 13

HV Dual Supply Power Solution

Integrated FET Boost Regulator: ISL97701

Boost Regulator

for Positive and

Negative Supplies

• Up to 87% Efficiency

• 2.3V to 5.5V Input

• Up to 28V Output

• Integrated Boost Schottky Diode

• Input Voltage Disconnect Switch for Micro Power

Shutdown

• Synchronization Input

• 10 Ld 3x3 DFN Package

• Pb-free (RoHS Compliant)

• Up to 2.5W Output Power

Key Features

VDDOUT

NEN

NSYNC

GND

5µF

4.7µF

383kΩ

22.2kΩ

6.8µH

VOUT

20.99V

VDD

4.7µF

100kΩ

4.7µF

- 20.99V

100kΩ

33.2kΩ

VOUT(positive)

20V

VOUT(negative)

-20V

ISL97701

ISL28108

V-

V+

VDDOUT

NEN

NSYNC

GND

5µF

3.3µF

390kΩ

39kΩ

6.8µH

VOUT

VDD+2V TO 30V

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

VDD

2.3V TO 5.5V

ISL97701

Internally

compensated boost

requires only a small

3.3µF output cap for

stability.

Integrated

Schottky diode

Integrated input

disconnect switch

enables true micro

power shutdown.

Synchronization input

to lock to preferred

switching frequency to

reduce unwanted noise

in the system.

Up to 2.5W Output Power Delivered in a 3x3mm TDFN Package

Highly Integrated Design Reduces External Components

VIN (V)

2.3

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

3.2

2.9

2.6

2.3

2.0

1.7

1.4

1.1

0.8

0.5

RECOMMENDED MAXIMUM OUTPUT POWER vs INPUT VOLTAGE

For more information, refer to AN1673 “Application Circuit to generate

Positive and Negative Supplies Using ISL97701 Boost Regulator”.

Analog Input

Analog Output

Control

Sensors

Power

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