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LT1790-2.5 Datasheet

  • LT1790-2.5

  • 2.5V Micropower SOT-23 Low Dropout Reference

  • 8頁

  • LINER

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Final Electrical Specifications
LT1790-2.5
2.5V Micropower SOT-23
Low Dropout Reference
March 2000
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
High Accuracy:
A Grade鈥?.05% Max
B Grade鈥?.1% Max
Low Drift:
A Grade鈥?0ppm/
擄
C Max
B Grade鈥?5ppm/
擄
C Max
Low Supply Current: 60碌A(chǔ) Max
Sinks and Sources: 5mA Min
Low Dropout Voltage
Guaranteed Operational 鈥?0擄C to 125擄C
Wide Supply Range: 2.6V to 18V
The LT
廬
1790-2.5 is a SOT-23 micropower low dropout
series reference that combines high accuracy and low drift
with low power dissipation and small package size. This
micropower reference uses curvature compensation to
obtain a low temperature coefficient and trimmed preci-
sion thin-film resistors to achieve high output accuracy. In
addition, the LT1790-2.5 uses post-package trimming to
greatly reduce the temperature coefficient and increase
the output accuracy. Output accuracy is further assured by
excellent line and load regulation. Special care has been
taken to minimize thermally induced hysteresis.
The LT1790-2.5 is ideally suited for battery-operated
systems because of its small size, low supply current and
reduced dropout voltage. This reference provides supply
current and power dissipation advantages over shunt
references that must idle the entire load current to operate.
However, since the LT1790-2.5 can also sink current, it
can operate as a micropower negative voltage reference
with the same performance as a positive reference.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Handheld Instruments
Negative Voltage References
Industrial Control Systems
Data Acquisition Systems
Battery-Operated Equipment
TYPICAL APPLICATIO
Typical V
OUT
Distribution
50
45
167 UNITS
NUMBER OF UNITS
Positive Connection
2.6V
鈮?/div>
V
IN
鈮?/div>
18V
0.1碌F
4
LT1790-2.5
1, 2
6
1碌F
1790 TA01
40
35
30
25
20
15
10
5
0
2.498
V
OUT
= 2.5V
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
LT1790BC LIMITS
LT1790AC LIMITS
2.499 2.500
2.501
OUTPUT VOLTAGE (V)
2.502
1790 TA02
U
U
1

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