LT1461
Micropower Precision
Low Dropout Series
Voltage Reference Family
Features
Description
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
The LT®1461 is a family of low dropout micropower bandgap 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.
nn
Applications
In low power applications, a dropout voltage of less than
300mV ensures maximum battery life while maintaining
full reference performance. Line regulation is nearly immeasurable, while the exceedingly good load and thermal 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 conditions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V
and 5V options.
A/D and D/A Converters
Precision Regulators
nn Handheld Instruments
nn Power Supplies
nn
nn
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
(VOUT + 0.3V) ≤ VIN ≤ 20V
CIN
1µF
LT1461-2.5 Load Regulation, PDISS = 200mW
LT1461
CL
2µF
1461 TA01
VOUT
0mA
VOUT
20mA
VOUT LOAD REG
1mV/DIV
10ms/DIV
1461 TA02
1461fb
For more information www.linear.com/LT1461
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