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LT1461-2.5 Datasheet

  • LT1461-2.5

  • Micropower Precision Low Dropout Series Voltage Reference

  • 12頁

  • LINER

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LT1461-2.5
Micropower Precision
Low Dropout Series
Voltage Reference
FEATURES
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Trimmed to High Accuracy: 0.04% Max
Low Drift: 3ppm/
擄
C Max
Low Supply Current: 50
碌
A Max
Temperature Coefficient Guaranteed to 125擄C
High Output Current: 50mA Min
Low Dropout Voltage: 300mV Max
Excellent Thermal Regulation
Power Shutdown
Thermal Limiting
Operating Temperature Range: 鈥?40擄C to 125擄C
Available in SO-8 Package
APPLICATIO S
s
s
s
s
A/D and D/A Converters
Precision Regulators
Handheld Instruments
Power Supplies
The LT
廬
1461 is a low dropout micropower bandgap refer-
ence that combines very high accuracy and low drift with low
supply current and high output drive. This series reference
uses advanced curvature compensation techniques to obtain
low temperature coefficient and trimmed precision thin-film
resistors to achieve high output accuracy. The LT1461 draws
only 35碌A(chǔ) of supply current, making it ideal for low power and
portable applications, however its high 50mA output drive
makes it 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 immeasur-
able, 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Basic Connection
V
IN
鈮?/div>
2.8V
LT1461-2.5
C
IN
1碌F
C
L
2碌F
1461 TA01
Load Regulation, P
DISS
= 200mW
2.5V
0mA
I
OUT
20mA
V
OUT
LOAD REG
1mV/DIV
U
10ms/DIV
1461 TA02
U
U
1

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