Vishay Siliconix

SiP1759

Document Number: 72949

S09-1453-Rev. D, 03-Aug-09

www.vishay.com

1

Buck-Boost Regulator

DESCRIPTION

The SiP1759 is a buck-boost regulating charge pump. It is

designed to provide a regulated output from 1 cell Li Ion or 2/

3 cell NiMH voltages found in handheld portable equipment,

1.6 V to 5.5 V. SiP1759 allows the option of a fixed 3.3 V

output voltage, or an adjustable output which can be set from

2.5 V to 5.5 V. The output current is up to 100 mA.

For flexibility in application, SiP1759 has a shutdown pin

(SD) and an ERROR output to indicate when the output

voltage is in regulation.

SiP1759 is available in a 10 pin MSOP package and is rated

over the industrial temperature range of - 40 °C to 85 °C.

FEATURES

•

Output voltage - fixed 3.3 V or adjustable from 2.5 V to 5.5 V

•

1.6 V to 5.5 V input voltage range

•

100 mA output current

•

60 µA quiescent current

•

Shutdown current < 1 µA

•

Short circuit crotection

•

Thermal shutdown

APPLICATIONS

•

1 cell Li ion battery powered equipment

•

2 to 3 cell NiMH battery powered equipment

•

2 to 3 cell alkaline battery powered equipment

•

Backup battery boost converters

TYPICAL APPLICATION CIRCUIT

SiP1759

Adjustable Output Voltage

R

FB

PGND

GND

Fixed Output

SiP1759

R

FB

PGND

GND

PGND

ERROR

SD

SD

ERROR