LTC1983-3/LTC1983-5

1

sn1983 1983fs

The LTC

pump DC/DC converters that produce negative regulated

outputs. The parts require only three tiny external capaci-

tors and can provide up to 100mA of output current. The

supply) or regulated output mode depending on the input

supply voltage and the output current.

The LTC1983-3/LTC1983-5 have many useful features for

portable applications including very low quiescent current

(25

µA typical) and a zero current shutdown mode pro-

grammed through the SHDN pin.

The LTC1983-3/LTC1983-5 are over-temperature and

short-circuit protected. The parts are available in a 6-pin

low profile (1mm) ThinSOT package.

s

–3V Generation in Single-Supply Systems

s

Portable Equipment

s

LCD Bias Supplies

s

GaAs FET Bias Supplies

s

s

±4% Output Voltage Accuracy

s

Low Quiesient Current: 25

µA

s

100mA Output Current Capability

s

3V to 5.5V Operating Voltage Range (LTC1983-3)

s

2.3V to 5.5V Operating Voltage Range (LTC1983-5)

s

Internal 900kHz Oscillator

s

“Zero Current” Shutdown

s

Short-Circuit and Over-Temperature Protected

s

Low Profile (1mm) ThinSOT

100mA Regulated

Charge-Pump Inverters

in ThinSOT

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

SHDN

GND

LTC1983-3

3V TO 5.5V

10

µF

10

µF

1

µF

OFF ON

1983-3 TA01

0

–3.3

–3.2

–3.1

–3.0

–2.9

–2.8

–2.7

20

40

60

80

1983 TA02

100

DESCRIPTIO

FEATURES

APPLICATIO S

TYPICAL APPLICATIO

–3V at 100mA DC/DC Converter