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LT3092IDD Datasheet

200mA Two-Terminal Programmable Current Source

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LT3092
200mA 2-Terminal
Programmable Current Source
FEATURES
n Programmable 2-Terminal Current Source
n Maximum Output Current: 200mA
n Wide Input Voltage Range: 1.2V to 40V
n Input/Output Capacitors Not Required
n Resistor Ratio Sets Output Current
n Initial Set Pin Current Accuracy: 1%
n Reverse-Voltage Protection
n Reverse-Current Protection
n <0.001%/V Line Regulation Typical
n Current Limit and Thermal Shutdown Protection
n Available in 8-Lead SOT-23, 3-Lead SOT-223 and
8-Lead 3mm × 3mm DFN Packages
n AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
n 2-Terminal Floating Current Source
n GND Referred Current Source
n Variable Current Source
n In-Line Limiter
n Intrinsic Safety Circuits
DESCRIPTION
The LT®3092 is a programmable 2-terminal current
source. It requires only two resistors to set an output
current between 0.5mA and 200mA. A multitude of analog
techniques lend themselves to actively programming the
output current. The LT3092 is stable without input and
output capacitors, offering high DC and AC impedance. This
feature allows operation in intrinsically safe applications.
The SET pin features 1% initial accuracy and low tem-
perature coefficient. Current regulation is better than
10ppm/V from 1.5V to 40V.
The LT3092 can operate in a 2-terminal current source
configuration in series with signal lines. It is ideal for driv-
ing sensors, remote supplies, and as a precision current
limiter for local supplies.
Internal protection circuitry includes reverse-battery and
reverse-current protection, current limiting and thermal
limiting. The LT3092 is offered in the 8-lead TSOT-23,
3-lead SOT-223 and 8-lead 3mm × 3mm DFN packages.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
Adjustable 2-Terminal Current Source
VIN – VOUT = 1.2V TO 40V
LT3092
IN
10µA
+
SET
OUT
RSET
ROUT
ISOURCE
=
10µA
RSET
ROUT
3092 TA01a
SET Pin Current vs Temperature
10.100
10.075
10.050
10.025
10.000
9.975
9.950
9.925
9.900
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3092 TA01b
Document Feedback
For more information www.analog.com
Rev. D
1


Analog Devices Semiconductor Electronic Components Datasheet

LT3092IDD Datasheet

200mA Two-Terminal Programmable Current Source

No Preview Available !

LT3092
ABSOLUTE MAXIMUM RATINGS (Note 1) All Voltages Relative to VOUT
IN Pin Voltage Relative to SET, OUT.........................±40V
SET Pin Current (Note 6)...................................... ±15mA
SET Pin Voltage (Relative to OUT, Note 6)............... ±10V
Output Short-Circuit Duration........................... Indefinite
Operating Junction Temperature Range (Notes 2, 8)
E, I Grades.......................................... –40°C to 125°C
MP Grade............................................ –55°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (ST, TS8 Packages Only)
Soldering, 10 sec............................................... 300°C
PIN CONFIGURATION
TOP VIEW
OUT 1
8 IN
OUT 2
7 IN
9
NC 3
6 NC
SET 4
5 NC
TAB IS OUT
TOP VIEW
3 IN
2 OUT
1 SET
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 28°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO OUT
ON THE PCB. SEE THE APPLICATIONS INFORMATION SECTION.
ST PACKAGE
3-LEAD PLASTIC SOT-223
TJMAX = 125°C, θJA = 24°C/W, θJC = 15°C/W
TAB IS OUT, MUST BE SOLDERED TO OUT ON THE PCB.
SEE THE APPLICATIONS INFORMATION SECTION.
TOP VIEW
NC 1
OUT 2
OUT 3
OUT 4
8 IN
7 IN
6 NC
5 SET
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 57°C/W, θJC = 15°C/W
Rev. D
2
For more information www.analog.com


Part Number LT3092IDD
Description 200mA Two-Terminal Programmable Current Source
Maker Analog Devices
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