LT3010_15 Datasheet, PDF (1/18 Pages) Linear Technology – 50mA, 3V to 80V Low Dropout Micropower Linear Regulator

FEATURES
n _{Wide Input Voltage Range: 3V to 80V}
n _{Low Quiescent Current: 30µA}
n _{Low Dropout Voltage: 300mV}
n _{Output Current: 50mA}
n _{Thermally Enhanced 8-Lead MSOP Package}
n _{No Protection Diodes Needed}
n _{Fixed Output Voltage: 5V (LT3010-5)}
n _{Adjustable Output from 1.275V to 60V (LT3010)}
n _{1µA Quiescent Current in Shutdown}
n _{Stable with 1µF Output Capacitor}
n _{Stable with Aluminum, Tantalum or Ceramic}
Capacitors
n _{Reverse-Battery Protection}
n _{No Reverse Current Flow from Output}
n _{Thermal Limiting}
APPLICATIONS
n _{Low Current High Voltage Regulators}
n _{Regulator for Battery-Powered Systems}
n _{Telecom Applications}
n _{Automotive Applications}
LT3010/LT3010-5
50mA, 3V to 80V
Low Dropout
Micropower Linear Regulator
DESCRIPTION
The LT^®3010 is a high voltage, micropower low dropout
linear regulator. The device is capable of supplying 50mA
output current with a dropout voltage of 300mV. Designed
for use in battery-powered or high voltage systems, the low
quiescent current (30µA operating and 1µA in shutdown)
makes the LT3010 an ideal choice. Quiescent current is
also well controlled in dropout.
Other features of the LT3010 include the ability to operate
with very small output capacitors. The regulators are stable
with only 1µF on the output while most older devices re-
quire 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 in a fixed output voltage of 5V and
as an adjustable device with a 1.275V reference voltage.
The LT3010 regulator is available in the 8-lead MSOP pack-
age with an exposed pad for enhanced thermal handling
capability.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
TYPICAL APPLICATION
5V Supply with Shutdown
V_IN
5.4V TO
80V
IN
OUT
LT3010-5
1µF
SHDN SENSE
GND
V_SHDN (PIN 5) OUTPUT
<0.3V
OFF
>2.0V
ON
30105 TA01
V_OUT
5V
50mA
1µF
350
300
250
200
150
100
50
0
0
Dropout Voltage
10
20
30
40
50
OUTPUT CURRENT (mA)
30105 TA02
30105fe
1