LT3065 Series

1

3065fc

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their

respective owners.

Typical applicaTion

FeaTures

DescripTion

Linear Regulator with Programmable

Current Limit and Power Good

TheLT®3065Seriesaremicropower,lownoise,lowdropout

voltage (LDO) linear regulators that operate over a 1.8V

to 45V input voltage range. The devices supply 500mA of

output current with a typical dropout voltage of 300mV. A

singleexternalcapacitorprovidesprogrammablelownoise

reference performance and output soft-start functionality.

A single external resistor programs the LT3065’s current

limit, accurate to ±10% over a wide input voltage and tem-

perature range. A PWRGD flag indicates output regulation.

The LT3065 optimizes stability and transient response

with low ESR ceramic capacitors, requiring a minimum of

3.3µF.Internalprotectioncircuitryincludescurrentlimiting

with foldback, thermal limiting, reverse battery protection,

reverse current protection and reverse output protection.

The LT3065 is available in fixed output voltages of 1.2V,

1.5V, 1.8V, 2.5V, 3.3V, and 5V, and as an adjustable de-

vice with an output voltage range from 0.6V to 40V. The

LT3065 is available in the thermally-enhanced 10-lead

3mm × 3mm DFN and 12-lead MSOP packages.

5V Supply with 200mA Precision Current Limit

applicaTions

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Input Voltage Range: 1.8V to 45V

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Output Current: 500mA

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Dropout Voltage: 300mV

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Programmable Precision Current Limit: ±10%

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Power Good Flag

n

n

n

Output Tolerance: ±2% Over Line, Load and

Temperature

n

Stable with Low ESR, Ceramic Output Capacitors

(3.3µF Minimum)

n

Single Capacitor Soft-Starts Reference and Lowers

Output Noise

n

Current Limit Foldback Protection

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Shutdown Current: <1µA

n

Reverse Battery and Thermal Limit Protection

n

10-Lead 3mm × 3mm DFN and 12-lead MSOP

Packages

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Battery-Powered Systems

n

Automotive Power Supplies

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Industrial Power Supplies

n

Avionic Power Supplies

n

Portable Instruments

TEMPERATURE (°C)

–75

204

212

220

125

3065 TA01b

196

188

200

208

216

192

184

180

–25

25

75

–50

150

0

50

100

175

LT3065-5

GND

500k

10nF

OUT

SENSE

ADJ

IN

SHDN

PWRGD

REF/BYP

3.3µF

5.6V TO 13V

IN

5V

OUT

200mA

3.3µF

1.5k

22nF

3065 TA01a

1nF