LT1764EQPBF Linear Technology Corporation, LT1764EQPBF Datasheet

LT1764EQPBF

Manufacturer Part Number

LT1764EQPBF

Description

TO263

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1764EQPBF.pdf (20 pages)

2.LT1764EQPBF.pdf (20 pages)

Specifications of LT1764EQPBF

Date_code

07+

Current page: 1 of 20
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FEATURES

TYPICAL APPLICATIO

■

APPLICATIO S

■

3.3V to 2.5V Logic Power Supply

Post Regulator for Switching Supplies

Optimized for Fast Transient Response

Output Current: 3A

Dropout Voltage: 340mV at 3A

Low Noise: 40

1mA Quiescent Current

Wide Input Voltage Range: 2.7V to 20V

No Protection Diodes Needed

Controlled Quiescent Current in Dropout

Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V

Adjustable Output from 1.21V to 20V

< 1µA Quiescent Current in Shutdown

Stable with 10µF Output Capacitor

Reverse Battery Protection

No Reverse Current

Thermal Limiting

Available in 5-Lead TO-220, DD and 16-Lead

TSSOP Packages

> 3V

10µF

3.3V

RMS

to 2.5V

SHDN

LT1764-2.5

(10Hz to 100kHz)

GND

OUT

SENSE

OUT

Regulator

10µF

1764 TA01

2.5V

DESCRIPTIO

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 < 1µA 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 10µF.

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.

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

including 6144250, 6118263.

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

1764 is a low dropout regulator optimized for fast

400

350

300

250

200

150

100

Response, Low Noise,

0.5

3A, Fast Transient

Dropout Voltage

LOAD CURRENT (A)

1.0

LDO Regulators

1.5

2.0

LT1764 Series

2.5

1764 TA02

3.0

1764fb

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