LT1461_15 Datasheet, PDF (1/18 Pages) Linear Technology – Micropower Precision Low Dropout Series Voltage Reference Family

LT1461
Micropower Precision
Low Dropout Series
Voltage Reference Family
Features
nn _{Trimmed to High Accuracy: 0.04% Max}
nn _{Low Drift: 3ppm/°C Max}
nn _{Low Supply Current: 50µA Max}
nn _{High Output Current: 50mA Min}
nn _{Low Dropout Voltage: 300mV Max}
nn _{Excellent Thermal Regulation}
nn _{Power Shutdown}
nn _{Thermal Limiting}
nn _{All Parts Guaranteed Functional from –40°C to 125°C}
nn _{Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V}
Applications
nn _{A/D and D/A Converters}
nn _{Precision Regulators}
nn _{Handheld Instruments}
nn _{Power Supplies}
Description
The LT^®1461 is a family of low dropout micropower band-
gap references that combine very high accuracy and low
drift with low supply current and high output drive. These
series references use advanced curvature compensation
techniques to obtain low temperature coefficient and
trimmed precision thin-film resistors to achieve high
output accuracy. The LT1461 family draws only 35µA
of supply current, making them ideal for low power and
portable applications, however their high 50mA output
drive makes them suitable for higher power requirements,
such as precision regulators.
In low power applications, a dropout voltage of less than
300mV ensures maximum battery life while maintaining
full reference performance. Line regulation is nearly im-
measurable, while the exceedingly good load and ther-
mal regulation will not add significantly to system error
budgets. The shutdown feature can be used to switch full
load currents and can be used for system power down.
Thermal shutdown protects the part from overload condi-
tions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V
and 5V options.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical Application
Basic Connection
(V_OUT + 0.3V) ≤ V_IN ≤ 20V
C_IN
1µF
LT1461
V_OUT
C_L
2µF
1461 TA01
LT1461-2.5 Load Regulation, P_DISS = 200mW
0mA
V_OUT
20mA
V_OUT LOAD REG
1mV/DIV
10ms/DIV
1461 TA02
For more information www.linear.com/LT1461
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