LT3014
20mA, 3V to 80V
Low Dropout Micropower
Linear Regulator
FEATURES
DESCRIPTION
The LT®3014 is a high voltage, micropower low dropout
linearregulator.Thedeviceiscapableofsupplying20mAof
output current with a dropout voltage of 350mV. Designed
foruseinbattery-poweredorhighvoltagesystems,thelow
quiescent current (7μA operating and 1μA in shutdown)
makes the LT3014 an ideal choice. Quiescent current is
also well controlled in dropout.
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Wide Input Voltage Range: 3V to 80V
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Low Quiescent Current: 7µA
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Low Dropout Voltage: 350mV
Output Current: 20mA
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LT3014HV Survives 100V Transients (2ms)
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No Protection Diodes Needed
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Adjustable Output from 1.22V to 60V
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1µA Quiescent Current in Shutdown
Other features of the LT3014 include the ability to operate
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.
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Stable with 0.47µF Output Capacitor
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Stable with Aluminum, Tantalum or Ceramic
Capacitors
Reverse-Battery Protection
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No Reverse Current Flow from Output
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Thermal Limiting
Available in 5-Lead ThinSOTTM and
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8-Lead DFN Packages
Thedeviceisavailableasanadjustabledevicewitha1.22V
reference voltage. The LT3014 regulator is available in the
5-lead ThinSOT and 8-lead DFN packages.
APPLICATIONS
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Low Current High Voltage Regulators
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.
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Regulator for Battery-Powered Systems
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Telecom Applications
Automotive Applications
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TYPICAL APPLICATION
5V Supply with Shutdown
Dropout Voltage
400
V
OUT
350
300
250
200
150
100
50
IN
OUT
ADJ
5V
20mA
V
IN
LT3014
3.92M
1.27M
5.4V TO
80V
0.47μF
1μF
SHDN
GND
3014 TA01
V
OUTPUT
SHDN
<0.3V
>2.0V
OFF
ON
0
0
2
4
6
8
10 12 14 16 18 20
OUTPUT CURRENT (mA)
3014 TA02
3014fd
1