LT3014B Datasheet, PDF (1/12 Pages) Linear Technology – 20mA, 3V to 80V Low Dropout Micropower Linear Regulator

FEATURES
■ _{Wide Input Voltage Range: 3V to 80V}
■ _{Low Quiescent Current: 7µA}
■ _{Low Dropout Voltage: 350mV}
■ _{Output Current: 20mA}
■ _{LT3014BHV Survives 100V Transients (2ms)}
■ _{No Protection Diodes Needed}
■ _{Adjustable Output from 1.22V to 60V}
■ _{Stable with 0.47µF Output Capacitor}
■ _{Stable with Aluminum, Tantalum or Ceramic}
Capacitors
■ _{Reverse-Battery Protection}
■ _{No Reverse Current Flow from Output}
■ _{Thermal Limiting}
■ _{Available in 5-Lead ThinSOT}^TM _and
8-Lead DFN Packages
U
APPLICATIO S
■ _{Low Current High Voltage Regulators}
■ _{Regulator for Battery-Powered Systems}
■ _{Telecom Applications}
■ _{Automotive Applications}
TYPICAL APPLICATIO
V_IN
5.4V TO
80V
5V Supply
IN
OUT
LT3014B
1µF
ADJ
GND
3.92M
V_OUT
5V
20mA
0.47µF
1.27M
3014 TA01
LT3014B
20mA, 3V to 80V
Low Dropout Micropower
Linear Regulator
DESCRIPTIO
The LT^®3014B 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. De-
signed 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 oper-
ate 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 neces-
sary addition of ESR as is common with other regulators.
Internal protection circuitry includes reverse-battery pro-
tection, 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.
, LTC and LT 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
3014bf
1