LT6106 Linear Technology Corporation, LT6106 Datasheet

no-image

LT6106

Manufacturer Part Number
LT6106
Description
Low Cost, 36v High Side Current Sense Amplifier
Manufacturer
Linear Technology Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT6106CS5
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT6106CS5#PBF
Manufacturer:
Linear
Quantity:
300
Part Number:
LT6106CS5#TRPBF
Manufacturer:
SMSC
Quantity:
3 100
Part Number:
LT6106CS5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT6106CS5#TRPBF
0
Part Number:
LT6106HS5
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT6106HS5#TRMPBF
Manufacturer:
ADI
Quantity:
196
Part Number:
LT6106HS5#TRMPBF
0
Part Number:
LT6106HS5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT6106IS5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT6106IS5#TRPBF
0
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Gain Confi gurable with Two Resistors
Low Offset Voltage: 250μV Maximum
Output Current: 1mA Maximum
Supply Range: 2.7V to 36V, 44V Absolute Maximum
Low Input Bias Current: 40nA Maximum
PSRR: 106dB Minimum
Low Supply Current: 65μA Typical, V
Operating Temperature Range: –40°C to 125°C
Low Profi le (1mm) ThinSOT
Current Shunt Measurement
Battery Monitoring
Power Management
Motor Control
Lamp Monitoring
Overcurrent and Fault Detection
0.02Ω
3V TO 36V
LOAD
3V to 36V, 5A Current Sense with A
100Ω
+IN
V
LT6106
+
TM
Package
–IN
OUT
V
6106 TA01a
+
+
V
= 12V
= 10
1k
V
200mV/A
OUT
DESCRIPTION
The LT
fi er. Design fl exibility is provided by the excellent device
characteristics: 250μV maximum offset and 40nA maxi-
mum input bias current. Gain for each device is set by two
resistors and allows for accuracy better than 1%.
The LT6106 monitors current via the voltage across an
external sense resistor (shunt resistor). Internal circuitry
converts input voltage to output current, allowing for a
small sense signal on a high common mode voltage to
be translated into a ground referenced signal. The low DC
offset allows for monitoring very small sense voltages. As
a result, a small valued shunt resistor can be used, which
minimizes the power loss in the shunt.
The wide 2.7V to 44V input voltage range, high accuracy
and wide operating temperature range make the LT6106
ideal for automotive, industrial and power management
applications. The very low power supply current of the
LT6106 also makes it suitable for low power and battery
operated applications.
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Current Sense in a SOT-23
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
36V Low Cost High Side
®
6106 is a versatile high side current sense ampli-
–0.2
–0.4
–0.8
–0.6
–1.0
–1.2
0.6
0.2
0.4
Measurement Accuracy vs Load Current
0
0
5A FULL SCALE
R
A
SENSE
V
= 10
= 0.02Ω
1
LIMIT OVER TEMPERATURE
TYPICAL PART AT T
LOAD CURRENT (A)
LIMIT OVER TEMPERATURE
2
R
R
V
IN
OUT
+
= 3V
= 100Ω
= 1k
3
A
= 25°C
4
6106 TA01b
5
LT6106
6106fa
1

Related parts for LT6106

LT6106 Summary of contents

Page 1

... LT6106 ideal for automotive, industrial and power management applications. The very low power supply current of the LT6106 also makes it suitable for low power and battery operated applications. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ...

Page 2

... Operating Temperature Range (Note 4) LT6106C ............................................... –40°C to 85°C LT6106H ............................................ –40°C to 125°C Specifi ed Temperature Range (Note 4) LT6106C ................................................... 0°C to 70°C LT6106H ............................................ –40°C to 125°C Storage Temperature Range ................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C ...

Page 3

... Maximum Rating condition for extended periods may affect device reliability and lifetime. In addition to the Absolute Maximum Ratings, the output current of the LT6106 must be limited to insure that the power dissipation in the LT6106 does not allow the die temperature to exceed 150°C. See the applications information section “Power Dissipation Considerations” ...

Page 4

... LT6106 TYPICAL PERFORMANCE CHARACTERISTICS Gain Error vs Temperature 0 –0. 36V –0.10 –0. 12V –0. –0.25 –0. 2.7V –0.35 –0.40 –0. OUT I = 1mA –0.50 OUT OUT –0.55 TYPICAL UNIT –0.60 –45 –25 – 115 130 TEMPERATURE (°C) 6106 G04 ...

Page 5

... 10k OUT 800 700 600 500 400 300 200 100 0 125 (mV) SENSE LT6106 Step Response 50mV to 100mV (R = 500Ω SENSE 100mV/DIV V OUT 500mV/DIV 0V 6106 5μs/DIV OUT R = 10k OUT + V = 12V ...

Page 6

... Positive Supply Pin. The V nected directly to either side of the sense resistor, R Supply current is drawn through this pin. The circuit may be confi gured so that the LT6106 supply current not monitored along with the system load current. To monitor only the system load current, connect V ...

Page 7

... APPLICATIONS INFORMATION Introduction The LT6106 high side current sense amplifi er (Figure 1) pro- vides accurate monitoring of current through a user-selected sense resistor. The sense voltage is amplifi user- selected gain and level shifted from the positive power sup- ply to a ground-referred output. The output signal is analog and may be used as is, or processed with an output fi ...

Page 8

... IN R SENSE +IN – + LOAD – V LT6106 Figure 2. Kelvin Input Connection Preserves Accuracy with Large Load Currents Selection of External Input Resistor should be chosen to allow the required resolution IN while limiting the output current to 1mA. In addition, the maximum value for R is 500Ω. By setting R ...

Page 9

... Minimum Output Voltage The curves of the Output Voltage vs Input Sense Voltage ⎞ show the behavior of the LT6106 with low input sense volt- – – I ⎠ ⎟ ages. When slightly positive, the result of input offset voltages and of a small amount of quiescent current (0.7μA to 1.2μA) < ...

Page 10

... This amount of power dis- sipation will result in a 10°C rise in junction temperature above the ambient temperature important to note that the LT6106 has been designed to provide at least 1mA to the output when required, and can deliver more depending on the conditions. Care must be taken to limit the maximum output current by proper – ...

Page 11

... APPLICATIONS INFORMATION In addition, if the output of the LT6106 is wired to a de- vice that will effectively short it to high voltage (such as through an ESD protection clamp) during a reverse sup- ply condition, the LT6106’s output should be connected through a resistor or Schottky diode (Figure 7). Demo Board Demo board DC1240 is available for evaluation of the LT6106 ...

Page 12

... DANGER! Lethal Potentials Present — Use Caution V 400V SENSE – SENSE IN 100Ω +IN –IN + – – OUT LT6106 M1 BAT46 V OUT M2 R OUT 4.99k R OUT • 49.9 V SENSE SENSE R IN 6106 TA02 COMMENTS 75μV V 4.1V to 48V, Pin-Selectable Gain: 10, 12.5, 20, 25, 40, 50V 60V/5V to 100V, Gain Confi ...

Related keywords