LT3014_15 Datasheet, PDF (1/16 Pages) Linear Technology – 20mA, 3V to 80V Low Dropout Micropower Linear Regulator

FEATURES
n _{Wide Input Voltage Range: 3V to 80V}
n _{Low Quiescent Current: 7µA}
n _{Low Dropout Voltage: 350mV}
n _{Output Current: 20mA}
n _{LT3014HV Survives 100V Transients (2ms)}
n _{No Protection Diodes Needed}
n _{Adjustable Output from 1.22V to 60V}
n _{1µA Quiescent Current in Shutdown}
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}
■ _{Available in 5-Lead ThinSOT}^TM _and
8-Lead DFN Packages
APPLICATIONS
n _{Low Current High Voltage Regulators}
n _{Regulator for Battery-Powered Systems}
n _{Telecom Applications}
n _{Automotive Applications}
TYPICAL APPLICATION
5V Supply with Shutdown
V_IN
5.4V TO
1μF
80V
V_SHDN OUTPUT
<0.3V OFF
>2.0V ON
IN
OUT
LT3014
SHDN ADJ
GND
3.92M
V_OUT
5V
20mA
0.47μF
1.27M
3014 TA01
LT3014
20mA, 3V to 80V
Low Dropout Micropower
Linear Regulator
DESCRIPTION
The LT^®3014 is a high voltage, micropower low dropout
linear 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 systems, the low
quiescent current (7μA operating and 1μA in shutdown)
makes the LT3014 an ideal choice. Quiescent current is
also well controlled in dropout.
Other features of the LT3014 include the ability to operate
with very small output capacitors. The regulators are stable
with only 0.47μF on the output while most older devices
require between 10μF and 100μF for stability. Small ceramic
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 LT3014 regulator is available in the
5-lead ThinSOT and 8-lead DFN packages.
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.
Dropout Voltage
400
350
300
250
200
150
100
50
0
0 2 4 6 8 10 12 14 16 18 20
OUTPUT CURRENT (mA)
3014 TA02
3014fd
1