1

LT1764 Series

1764fb

3A, Fast Transient

Response, Low Noise,

LDO Regulators

µA Quiescent Current in Shutdown

µF Output Capacitor

TSSOP Packages

The LT

transient response. The device is capable of supplying 3A

of output current with a dropout voltage of 340mV. Oper-

ating 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 LT1764 has very

low output voltage noise which makes the device ideal for

sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1764

regulators are stable with output capacitors as low as 10

µF.

Internal protection circuitry includes reverse battery pro-

tection, current limiting, thermal limiting and reverse cur-

rent protection. The device is 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 LT1764 regu-

lators are available in 5-lead TO-220, DD and Exposed Pad

16-lead TSSOP packages.

Dropout Voltage

■

3.3V to 2.5V Logic Power Supply

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

IN

SHDN

10

µF

1764 TA01

OUT

SENSE

GND

LT1764-2.5

2.5V

3A

10

µF

+

+

LOAD CURRENT (A)

0

0.5

1.0

2.0

1.5

2.5

3.0

1764 TA02

400

350

300

250

200

150

100

50

0

, 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 6144250, 6118263.