LT1790BIS6-2.048#TR Linear Technology, LT1790BIS6-2.048#TR Datasheet

IC REF LDO 2.048V MCRPWR SOT23-6

LT1790BIS6-2.048#TR

Manufacturer Part Number
LT1790BIS6-2.048#TR
Description
IC REF LDO 2.048V MCRPWR SOT23-6
Manufacturer
Linear Technology
Datasheet

Specifications of LT1790BIS6-2.048#TR

Reference Type
Series
Voltage - Output
2.048V
Tolerance
±0.1%
Temperature Coefficient
25ppm/°C
Voltage - Input
2.8 ~ 18 V
Number Of Channels
1
Current - Quiescent
60µA
Current - Output
5mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Cathode
-
Other names
LT1790BIS62.048TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT1790BIS6-2.048#TRLT1790BIS6-2.048
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LT1790BIS6-2.048#TRLT1790BIS6-2.048
Manufacturer:
LINEAR/凌特
Quantity:
20 000
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APPLICATIONS
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TYPICAL APPLICATION
FEATURES
High Accuracy:
Low Drift:
Low Thermal Hysteresis 40ppm (Typical) –40°C to 85°C
Low Supply Current: 60μA Max
Sinks and Sources Current
Low Dropout Voltage
Guaranteed Operational –40°C to 125°C
Wide Supply Range to 18V
Available Output Voltage Options: 1.25V, 2.048V,
2.5V, 3V, 3.3V, 4.096V and 5V
Low Profi le (1mm) ThinSOT™ Package
Handheld Instruments
Negative Voltage References
Industrial Control Systems
Data Acquisition Systems
Battery-Operated Equipment
2.6V ≤ V
A Grade—0.05% Max
B Grade—0.1% Max
A Grade—10ppm/°C Max
B Grade—25ppm/°C Max
IN
≤ 18V
Positive Connection for LT1790-2.5
0.1μF
4
LT1790-2.5
1, 2
6
1790 TA01
1μF
V
OUT
= 2.5V
Low Dropout Reference Family
DESCRIPTION
The LT
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 coeffi cient and trimmed preci-
sion thin-fi lm resistors to achieve high output accuracy. In
addition, each LT1790 is post-package trimmed to greatly
reduce the temperature coeffi cient 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 sys-
tems because of their small size, low supply current and
reduced dropout voltage. These references provide sup-
ply 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.
®
1790 is a family of SOT-23 micropower low dropout
50
45
40
35
30
25
20
15
10
Typical V
5
0
167 UNITS
2.498
Micropower SOT-23
OUT
2.499
OUTPUT VOLTAGE (V)
Distribution for LT1790-2.5
LT1790B LIMITS
LT1790A LIMITS
2.500
2.501
2.502
1790 TA02
LT1790
1790fb
1

Related parts for LT1790BIS6-2.048#TR

LT1790BIS6-2.048#TR Summary of contents

Page 1

... 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. ...

Page 2

... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1790ACS6-1.25#PBF LT1790ACS6-1.25#TRPBF LT1790AIS6-1.25#PBF LT1790AIS6-1.25#TRPBF LT1790BCS6-1.25#PBF LT1790BCS6-1.25#TRPBF LT1790BIS6-1.25#PBF LT1790BIS6-1.25#TRPBF LT1790ACS6-2.048#PBF LT1790ACS6-2.048#TRPBF LT1790AIS6-2.048#PBF LT1790AIS6-2.048#TRPBF LT1790BCS6-2.048#PBF LT1790BCS6-2.048#TRPBF LT1790BIS6-2.048#PBF LT1790BIS6-2.048#TRPBF LT1790ACS6-2.5#PBF LT1790ACS6-2.5#TRPBF LT1790AIS6-2.5#PBF LT1790AIS6-2.5#TRPBF LT1790BCS6-2.5#PBF LT1790BCS6-2.5#TRPBF LT1790BIS6-2.5#PBF LT1790BIS6-2.5#TRPBF LT1790ACS6-3#PBF LT1790ACS6-3#TRPBF LT1790AIS6-3#PBF LT1790AIS6-3#TRPBF LT1790BCS6-3#PBF LT1790BCS6-3#TRPBF LT1790BIS6-3#PBF LT1790BIS6-3#TRPBF LT1790ACS6-3.3#PBF LT1790ACS6-3 ...

Page 3

... ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL LT1790ACS6-1.25 LT1790ACS6-1.25#TR LT1790AIS6-1.25 LT1790AIS6-1.25#TR LT1790BCS6-1.25 LT1790BCS6-1.25#TR LT1790BIS6-1.25 LT1790BIS6-1.25#TR LT1790ACS6-2.048 LT1790ACS6-2.048#TR LT1790AIS6-2.048 LT1790AIS6-2.048#TR LT1790BCS6-2.048 LT1790BCS6-2.048#TR LT1790BIS6-2.048 LT1790BIS6-2.048#TR LT1790ACS6-2.5 LT1790ACS6-2.5#TR LT1790AIS6-2.5 LT1790AIS6-2.5#TR LT1790BCS6-2.5 LT1790BCS6-2.5#TR LT1790BIS6-2.5 LT1790BIS6-2.5#TR LT1790ACS6-3 LT1790ACS6-3#TR LT1790AIS6-3 LT1790AIS6-3#TR LT1790BCS6-3 LT1790BCS6-3#TR LT1790BIS6-3 LT1790BIS6-3#TR LT1790ACS6-3.3 LT1790ACS6-3 ...

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... I Sink = 1mA OUT TEMPERATURE RANGE –40°C TO 85°C ORDER PART NUMBER LT1790AIS6-1.25 LT1790BIS6-1.25 LT1790AIS6-2.048 LT1790BIS6-2.048 LT1790AIS6-2.5 LT1790BIS6-2.5 LT1790AIS6-3 LT1790BIS6-3 LT1790AIS6-3.3 LT1790BIS6-3.3 LT1790AIS6-4.096 LT1790BIS6-4.096 LT1790AIS6-5 LT1790BIS6-5 MIN TYP MAX UNITS 1.24937 1.25 1.25062 –0.05 0.05 1.24875 1.25 1.25125 –0.1 0.1 1.24850 1 ...

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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Supply Current Minimum Operating Current— Negative Output (See Figure 7) Turn-On Time Output Noise (Note 8) Long-Term Drift of Output Voltage (Note 9) Hysteresis (Note 10) 2.048V ELECTRICAL ...

Page 6

LT1790 2.048V ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T PARAMETER Output Noise (Note 8) Long-Term Drift of Output Voltage (Note 9) Hysteresis (Note 10) 2.5V ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T ...

Page 7

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Output Voltage (Notes 3, 4) Output Voltage Temperature Coeffi cient (Note 5) Line Regulation Load Regulation (Note 6) Dropout Voltage (Note 7) Supply Current Minimum Operating Current— Negative ...

Page 8

LT1790 3.3V ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Output Voltage (Notes 3, 4) Output Voltage Temperature Coeffi cient (Note 5) Line Regulation Load Regulation (Note 6) Dropout Voltage (Note 7) Supply Current Minimum Operating Current— ...

Page 9

ELECTRICAL CHARACTERISTICS specifi ed temperature range, otherwise specifi cations are at T PARAMETER Output Voltage (Notes 3, 4) Output Voltage Temperature Coeffi cient (Note 5) Line Regulation Load Regulation (Note 6) Dropout Voltage (Note 7) Supply Current Minimum Operating ...

Page 10

LT1790 5V ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Output Voltage (Notes 3, 4) Output Voltage Temperature Coeffi cient (Note 5) Line Regulation Load Regulation (Note 6) Dropout Voltage (Note 7) Supply Current Minimum Operating Current— ...

Page 11

ELECTRICAL CHARACTERISTICS Note 8: Peak-to-peak noise is measured with a single pole highpass fi lter at 0.1Hz and a 2-pole lowpass fi lter at 10Hz. The unit is enclosed in a still air environment to eliminate thermocouple effects on the ...

Page 12

LT1790 1.25V TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. Line Regulation 1.285 1.280 T = ...

Page 13

TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. Output Voltage Temperature Drift 2.056 FOUR TYPICAL ...

Page 14

LT1790 2.048V TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. – 2.048V Characteristics 0.30 R1 10k ...

Page 15

TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. Output Voltage Temperature Drift 2.508 FOUR TYPICAL ...

Page 16

LT1790 2.5V TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. – 2.5V Characteristics 0.30 0.25 0.20 ...

Page 17

TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. Output Voltage Temperature Drift 5.025 FOUR TYPICAL ...

Page 18

LT1790 5V TYPICAL PERFORMANCE CHARACTERISTICS Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options, the curves can be estimated based on the 2.5V and 5V curves. – 5V Characteristics 0.30 R1 10k ...

Page 19

APPLICATIONS INFORMATION Bypass and Load Capacitors The LT1790 voltage references should have an input bypass capacitor of 0.1μF or larger, however the bypassing of other local devices may serve as the required component. These references also require an output capacitor ...

Page 20

LT1790 APPLICATIONS INFORMATION Positive or Negative Operation Series operation is ideal for extending battery life LT1790 is operated in series mode it does not require an external current setting resistor. The specifi cations guar- antee that the LT1790 ...

Page 21

APPLICATIONS INFORMATION Hysteresis Hysteresis data shown in Figures 8 and 9 represent the worst-case data taken on parts from 0°C to 70°C and from – 40°C to 85°C. Units were cycled several times over these temperature ranges and the largest ...

Page 22

LT1790 APPLICATIONS INFORMATION the shift after 1 cycle, while Figure 12 shows shift after 3 cycles. In the worst case, shifts are typically 150ppm, but may be as high as 290ppm. Shifts in output voltage are proportional to temperature and ...

Page 23

APPLICATIONS INFORMATION More Output Current The circuit in Figure compact, high output current, low dropout precision supply. The circuit uses the SOT-23 LT1782 and the ThinSOT LT1790. Resistive divider R1 and R2 set a voltage 22mV below ...

Page 24

LT1790 SIMPLIFIED SCHEMATIC OUT 1, 2 GND 1790 SS 1790fb ...

Page 25

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. S6 Package ...

Page 26

... Low Noise Bandgap, 0.05%, 5ppm/°C 0.15% Max, 6.5μA Supply Current Bandgap, 130μA Supply Current, 10ppm/°C, Available in SOT-23 Bandgap 0.04%, 3ppm/°C, 50μA Max Supply Current www.linear.com ● 6 –2.5V 50mA 1790 TA03 LT 0609 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2000 1790fb ...

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