LT1790 Reference Datasheet

LT1790 Datasheet PDF, Equivalent


Part Number

LT1790

Description

Micropower SOT-23 Low Dropout Reference

Manufacture

Linear

Total Page 26 Pages
Datasheet
Download LT1790 Datasheet


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
1

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


Features LT1790 Micropower SOT-23 Low Dropout Re ference 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—25pp m/°C Max n Low Thermal Hysteresis 40p pm (Typical) –40°C to 85°C n Low S upply Current: 60µA Max n Sinks and S ources Current n Low Dropout Voltage n Guaranteed Operational –40°C to 12 5°C n Wide Supply Range to 18V n Ava ilable Output Voltage Options: 1.25V, 2 .048V, 2.5V, 3V, 3.3V, 4.096V and 5V n Low Profile (1mm) ThinSOT™ Package A PPLICATIONS n Handheld Instruments n Negative Voltage References n Industri al Control Systems n Data Acquisition Systems n Battery-Operated Equipment The LT®1790 is a family of SOT-23 micr opower low dropout series references th at combine high accuracy and low drift with low power dissipation and small pa ckage size. These micropower references use curvature compensation to obtain a low temperature coefficient and trimmed precision thin-film resistors to achieve hig.
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