LT3014B_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 _{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 _{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}
LT3014B
20mA, 3V to 80V
Low Dropout Micropower
Linear Regulator
DESCRIPTION
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.
Other features of the LT3014B 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 LT3014B 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.
TYPICAL APPLICATION
5V Supply
V_IN
5.4V TO
80V
IN
OUT
LT3014B
1µF
ADJ
GND
3.92M
1.27M
3014B TA01
V_OUT
5V
20mA
0.47µF
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)
3014B TA02
For more information www.linear.com/LT3014B
3014bfb
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