LT1764AMPQ Linear Technology, LT1764AMPQ Datasheet

LT1764AMPQ

Manufacturer Part Number

LT1764AMPQ

Description

IC,VOLT REGULATOR,ADJUSTABLE,+1.21 TO +20V,BIPOLAR,SIP,5PIN,PLASTIC

Manufacturer

Linear Technology

Datasheets

1.LT1764AMPQ.pdf (20 pages)

2.LT1764AMPQ.pdf (20 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LT1764AMPQ#PBF

Manufacturer:

LINEAR/凌特

Quantity:

20 000

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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*

Stable with Ceramic Capacitors*

Reverse Battery Protection

No Reverse Current

Thermal Limiting

> 3V

10µF*

3.3V

RMS

to 2.5V

SHDN

LT1764A-2.5

(10Hz to 100kHz)

GND

OUT

SENSE

1764 TA01

OUT

Regulator

*TANTALUM,

CERAMIC OR

ALUMINUM ELECTROLYTIC

10µF*

2.5V

DESCRIPTIO

The LT

fast transient response. The device is capable of supplying

3A of output current with a dropout voltage of 340mV.

Operating 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 LT1764A 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 LT1764A

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 LT1764A regu-

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

16-lead FE packages.

All other trademarks are the property of their respective owners.

*See Applications Information Section.

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

1764A is a low dropout regulator optimized for

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

LT1764A Series

2.0

2.5

1764 TA02

3.0

1764afb

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