Dropout Reference. LT1790 Datasheet

LT1790 Reference. Datasheet pdf. Equivalent

LT1790 Datasheet
Recommendation LT1790 Datasheet
Part LT1790
Description Micropower SOT-23 Low Dropout Reference
Feature LT1790; LT1790 Micropower SOT-23 Low Dropout Reference Family FEATURES DESCRIPTION n High Accuracy: A.
Manufacture Linear
Datasheet
Download LT1790 Datasheet





Linear LT1790
LT1790
Micropower SOT-23
Low Dropout Reference Family
FEATURES
DESCRIPTION
n High Accuracy:
A Grade—0.05% Max
B Grade—0.1% Max
n Low Drift:
A Grade—10ppm/°C Max
B Grade—25ppm/°C Max
n Low Thermal Hysteresis 40ppm (Typical) –40°C to 85°C
n Low Supply Current: 60µA Max
n Sinks and Sources Current
n Low Dropout Voltage
n Guaranteed Operational –40°C to 125°C
n Wide Supply Range to 18V
n Available Output Voltage Options: 1.25V, 2.048V,
2.5V, 3V, 3.3V, 4.096V and 5V
n Low Profile (1mm) ThinSOT™ Package
APPLICATIONS
n Handheld Instruments
n Negative Voltage References
n Industrial Control Systems
n Data Acquisition Systems
n Battery-Operated Equipment
The LT®1790 is a family of SOT-23 micropower low dropout
series references that combine high accuracy and low drift
with low power dissipation and small package size. These
micropower references use curvature compensation to
obtain a low temperature coefficient and trimmed preci-
sion thin-film resistors to achieve high output accuracy. In
addition, each LT1790 is post-package trimmed 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 LT1790s are ideally suited for battery-operated
systems because of their small size, low supply current
and reduced dropout voltage. These references provide
supply current and power dissipation advantages over
shunt references that must idle the entire load current to
operate. Since the LT1790 can also sink current, it can
operate as a micropower negative voltage reference with
the same performance as a positive reference.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Positive Connection for LT1790-2.5
2.6V ≤ VIN ≤ 18V
0.1µF
4 LT1790-2.5 6
1, 2
VOUT = 2.5V
1µF
1790 TA01
Typical VOUT Distribution for LT1790-2.5
50 167 UNITS
45
40 LT1790B LIMITS
35 LT1790A LIMITS
30
25
20
15
10
5
0
2.498
2.499 2.500 2.501
OUTPUT VOLTAGE (V)
2.502
1790 TA02
For more information www.linear.com/LT1790
1790fc
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Linear LT1790
LT1790
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage..............................................................20V
Specified Temperature Range
Commercial............................................. 0°C to 70°C
Industrial..............................................– 40°C to 85°C
Output Short-Circuit Duration........................... Indefinite
Operating Temperature Range
(Note 2)................................................... –40°C to 125°C
Storage Temperature Range
(Note 3)................................................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
GND 1
GND 2
DNC* 3
6 VOUT
5 DNC*
4 VIN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
TJMAX = 150°C, θJA = 230°C/W
*DNC: DO NOT CONNECT
ORDER INFORMATION http://www.linear.com/product/LT1790#orderinfo
LEAD FREE FINISH
LT1790ACS6-1.25#PBF
LT1790AIS6-1.25#PBF
LT1790BCS6-1.25#PBF
LT1790BIS6-1.25#PBF
LT1790ACS6-2.048#PBF
LT1790AIS6-2.048#PBF
LT1790BCS6-2.048#PBF
LT1790BIS6-2.048#PBF
LT1790ACS6-2.5#PBF
LT1790AIS6-2.5#PBF
LT1790BCS6-2.5#PBF
LT1790BIS6-2.5#PBF
LT1790ACS6-3#PBF
LT1790AIS6-3#PBF
LT1790BCS6-3#PBF
LT1790BIS6-3#PBF
LT1790ACS6-3.3#PBF
LT1790AIS6-3.3#PBF
LT1790BCS6-3.3#PBF
LT1790BIS6-3.3#PBF
LT1790ACS6-4.096#PBF
LT1790AIS6-4.096#PBF
LT1790BCS6-4.096#PBF
LT1790BIS6-4.096#PBF
LT1790ACS6-5#PBF
LT1790AIS6-5#PBF
LT1790BCS6-5#PBF
LT1790BIS6-5#PBF
TAPE AND REEL
LT1790ACS6-1.25#TRPBF
LT1790AIS6-1.25#TRPBF
LT1790BCS6-1.25#TRPBF
LT1790BIS6-1.25#TRPBF
LT1790ACS6-2.048#TRPBF
LT1790AIS6-2.048#TRPBF
LT1790BCS6-2.048#TRPBF
LT1790BIS6-2.048#TRPBF
LT1790ACS6-2.5#TRPBF
LT1790AIS6-2.5#TRPBF
LT1790BCS6-2.5#TRPBF
LT1790BIS6-2.5#TRPBF
LT1790ACS6-3#TRPBF
LT1790AIS6-3#TRPBF
LT1790BCS6-3#TRPBF
LT1790BIS6-3#TRPBF
LT1790ACS6-3.3#TRPBF
LT1790AIS6-3.3#TRPBF
LT1790BCS6-3.3#TRPBF
LT1790BIS6-3.3#TRPBF
LT1790ACS6-4.096#TRPBF
LT1790AIS6-4.096#TRPBF
LT1790BCS6-4.096#TRPBF
LT1790BIS6-4.096#TRPBF
LT1790ACS6-5#TRPBF
LT1790AIS6-5#TRPBF
LT1790BCS6-5#TRPBF
LT1790BIS6-5#TRPBF
PART MARKING*
LTXT
LTXT
LTXT
LTXT
LTXU
LTXU
LTXU
LTXU
LTPZ
LTPZ
LTPZ
LTPZ
LTQA
LTQA
LTQA
LTQA
LTXW
LTXW
LTXW
LTXW
LTQB
LTQB
LTQB
LTQB
LTQC
LTQC
LTQC
LTQC
PACKAGE DESCRIPTION
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
2 For more information www.linear.com/LT1790
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
1790fc



Linear LT1790
LT1790
ORDER INFORMATION
LEAD BASED FINISH
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1790ACS6-1.25
LT1790ACS6-1.25#TR
LTXT
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-1.25
LT1790AIS6-1.25#TR
LTXT
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-1.25
LT1790BCS6-1.25#TR
LTXT
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-1.25
LT1790BIS6-1.25#TR
LTXT
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-2.048
LT1790ACS6-2.048#TR
LTXU
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-2.048
LT1790AIS6-2.048#TR
LTXU
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-2.048
LT1790BCS6-2.048#TR
LTXU
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-2.048
LT1790BIS6-2.048#TR
LTXU
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-2.5
LT1790ACS6-2.5#TR
LTPZ
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-2.5
LT1790AIS6-2.5#TR
LTPZ
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-2.5
LT1790BCS6-2.5#TR
LTPZ
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-2.5
LT1790BIS6-2.5#TR
LTPZ
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-3
LT1790ACS6-3#TR
LTQA
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-3
LT1790AIS6-3#TR
LTQA
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-3
LT1790BCS6-3#TR
LTQA
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-3
LT1790BIS6-3#TR
LTQA
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-3.3
LT1790ACS6-3.3#TR
LTXW
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-3.3
LT1790AIS6-3.3#TR
LTXW
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-3.3
LT1790BCS6-3.3#TR
LTXW
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-3.3
LT1790BIS6-3.3#TR
LTXW
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-4.096
LT1790ACS6-4.096#TR
LTQB
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-4.096
LT1790AIS6-4.096#TR
LTQB
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-4.096
LT1790BCS6-4.096#TR
LTQB
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-4.096
LT1790BIS6-4.096#TR
LTQB
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790ACS6-5
LT1790ACS6-5#TR
LTQC
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790AIS6-5
LT1790AIS6-5#TR
LTQC
6-Lead Plastic TSOT-23
–40°C to 85°C
LT1790BCS6-5
LT1790BCS6-5#TR
LTQC
6-Lead Plastic TSOT-23
0°C to 70°C
LT1790BIS6-5
LT1790BIS6-5#TR
LTQC
6-Lead Plastic TSOT-23
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
For more information www.linear.com/LT1790
1790fc
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