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LT1790-2.5

Description
2.5V Micropower SOT-23 Low Dropout Reference
File Size175KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LT1790-2.5 Overview

2.5V Micropower SOT-23 Low Dropout Reference

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—0.05% Max
B Grade—0.1% Max
Low Drift:
A Grade—10ppm/
°
C Max
B Grade—25ppm/
°
C Max
Low Supply Current: 60µA Max
Sinks and Sources: 5mA Min
Low Dropout Voltage
Guaranteed Operational –40°C to 125°C
Wide Supply Range: 2.6V to 18V
The LT
®
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
V
IN
18V
0.1µF
4
LT1790-2.5
1, 2
6
1µF
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

LT1790-2.5 Related Products

LT1790-2.5 LT1790BCS6-2.5 LT1790ACS6-2.5
Description 2.5V Micropower SOT-23 Low Dropout Reference 2.5V Micropower SOT-23 Low Dropout Reference 2.5V Micropower SOT-23 Low Dropout Reference
Brand Name - Linear Technology Linear Technology
Is it Rohs certified? - incompatible incompatible
Maker - Linear ( ADI ) Linear ( ADI )
Parts packaging code - SOT SOT
package instruction - SOT-23, 6 PIN SOT-23, 6 PIN
Contacts - 6 6
Manufacturer packaging code - S6 S6
Reach Compliance Code - _compli _compli
ECCN code - EAR99 EAR99
Analog Integrated Circuits - Other Types - THREE TERMINAL VOLTAGE REFERENCE THREE TERMINAL VOLTAGE REFERENCE
JESD-30 code - R-PDSO-G6 R-PDSO-G6
JESD-609 code - e0 e0
length - 2.95 mm 2.95 mm
Humidity sensitivity level - 1 1
Number of functions - 1 1
Output times - 1 1
Number of terminals - 6 6
Maximum operating temperature - 70 °C 70 °C
Maximum output voltage - 2.50688 V 2.503 V
Minimum output voltage - 2.49313 V 2.497 V
Nominal output voltage - 2.5 V 2.5 V
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - VSSOP VSSOP
Encapsulate equivalent code - TSOP6,.11,37 TSOP6,.11,37
Package shape - RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) - 235 235
Certification status - Not Qualified Not Qualified
Maximum seat height - 1 mm 1 mm
Maximum supply voltage (Vsup) - 18 V 18 V
Minimum supply voltage (Vsup) - 3 V 3 V
Nominal supply voltage (Vsup) - 3 V 3 V
surface mount - YES YES
technology - BIPOLAR BIPOLAR
Maximum voltage temperature coefficient - 25 ppm/°C 10 ppm/°C
Temperature level - COMMERCIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING GULL WING
Terminal pitch - 0.95 mm 0.95 mm
Terminal location - DUAL DUAL
Maximum time at peak reflow temperature - 20 20
Fine-tuning/adjustable output - NO NO
Maximum voltage tolerance - 0.1% 0.05%
width - 1.625 mm 1.625 mm
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