1

LT1963 Series

1963fc

APPLICATIO S

FEATURES

DESCRIPTIO

1.5A, Low Noise,

Fast Transient Response

LDO Regulators

µA Quiescent Current in Shutdown

µF Output Capacitor

and 16-Lead TSSOP Packages

The LT

for fast transient response. The devices are capable of

supplying 1.5A of output current with a dropout voltage of

340mV. Operating quiescent current is 1mA, dropping to

<1

µA in shutdown. Quiescent current is well controlled; it

does not rise in dropout as it does with many other

regulators. In addition to fast transient response, the

LT1963 regulators have very low output noise which

makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1963

regulators are stable with output capacitors as low as

10

µF.Internalprotectioncircuitryincludesreversebattery

protection, current limiting, thermal limiting and reverse

current protection. The devices are available in fixed

output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an

adjustable device with a 1.21V reference voltage. The

LT1963 regulators are available in 5-lead TO-220, DD,

3-lead SOT-223, 8-lead SO, and Exposed Pad 16-lead

TSSOP packages.

3.3V to 2.5V Regulator

■

Post Regulator for Switching Supplies

IN

SHDN

10

µF

1963 TA01

OUT

SENSE

GND

LT1963-2.5

2.5V

1.5A

10

µF

+

+

OUTPUT CURRENT (A)

0

200

300

1.6

1963 TA02

100

0

0.4

0.8

1.2

0.2

0.6

1.0

1.4

400

150

250

50

350

Dropout Voltage

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

All other trademarks are the property of their respective owners. Protected by U.S. Patents,

including 6118263, 6144250.