LT3014B

1

3014bfb

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

20mA, 3V to 80V

Low Dropout Micropower

Linear Regulator

The LT®3014B is a high voltage, micropower low drop-

outlinear regulator. The device is capable of supplying

20mA of output current with a dropout voltage of 350mV.

Designed for use in battery-powered or high voltage sys-

tems, the low quiescent current (7µA operating) makes

the LT3014B an ideal choice. Quiescent current is also

well controlled in dropout.

OtherfeaturesoftheLT3014Bincludetheabilitytooperate

withverysmalloutputcapacitors.Theregulatorsarestable

with only 0.47µF on the output while most older devices

requirebetween10µFand100µFforstability.Smallceramic

capacitors can be used without the necessary addition of

ESR as is common with other regulators. Internal protec-

tion circuitry includes reverse-battery protection, current

limiting, thermal limiting and reverse current protection.

The device is available as an adjustable device with a 1.22V

reference voltage. The LT3014B regulator is available in

the 5-lead ThinSOT and 8-lead DFN packages.

Dropout Voltage

n

Wide Input Voltage Range: 3V to 80V

n

Low Quiescent Current: 7µA

n

Low Dropout Voltage: 350mV

n

Output Current: 20mA

n

LT3014BHV Survives 100V Transients (2ms)

n

No Protection Diodes Needed

n

Adjustable Output from 1.22V to 60V

n

Stable with 0.47µF Output Capacitor

n

Stable with Aluminum, Tantalum or Ceramic

Capacitors

n

Reverse-Battery Protection

n

No Reverse Current Flow from Output

n

Thermal Limiting

n

8-Lead DFN Packages

n

Low Current High Voltage Regulators

n

Regulator for Battery-Powered Systems

n

Telecom Applications

n

Automotive Applications

L

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

ThinSOT is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 6118263, 6144250.

5V Supply

400

350

300

250

200

150

100

50

0

3014B TA02

OUTPUT CURRENT (mA)

0

4

10 12

2

6

8

14 16 18 20

IN

LT3014B

1µF

5.4V TO

80V

OUT

ADJ

GND

3014B TA01

5V

20mA

0.47µF

3.92M

1.27M