LTC6101HV

Manufacturer Part NumberLTC6101HV
DescriptionHigh-Side Current Sense Amplifier
ManufacturerLinear Technology
LTC6101HV datasheets
 


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FEATURES
n
Supply Range:
5V to 100V, 105V Absolute Maximum (LTC6101HV)
4V to 60V, 70V Absolute Maximum (LTC6101)
n
Low Offset Voltage: 300μV Max
n
Fast Response: 1μs Response Time (0V to 2.5V on
a 5V Output Step)
n
Gain Confi gurable with 2 Resistors
n
Low Input Bias Current: 170nA Max
n
PSRR: 118dB Min
n
Output Current: 1mA Max
n
Low Supply Current: 250μA, V
S
n
Operating Temperature Range: –40°C to 125°C
n
Low Profi le (1mm) SOT-23 (ThinSOT™) Package
APPLICATIONS
n
Current Shunt Measurement
n
Battery Monitoring
n
Remote Sensing
n
Power Management
, LT, LTC and LTM 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
16-Bit Resolution Unidirectional Output into LTC2433 ADC
I
V
LOAD
SENSE
+
+IN
L
+
V
O
A
D
LTC6101HV
R
OUT
V
=
• V
= 49.9V
OUT
SENSE
R
IN
High-Side Current Sense
DESCRIPTION
The LTC
®
6101/LTC6101HV are versatile, high voltage, high
side current sense amplifi ers. Design fl exibility is provided
by the excellent device characteristics; 300μV Max offset
and only 375μA (typical at 60V) of current consumption.
The LTC6101 operates on supplies from 4V to 60V and
LTC6101HV operates on supplies from 5V to 100V.
The LTC6101 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
= 12V
be translated into a ground referenced signal. Low DC
offset allows the use of a small shunt resistor and large
gain-setting resistors. As a result, power loss in the shunt
is reduced.
The wide operating supply range and high accuracy make
the LTC6101 ideal for a large array of applications from
automotive to industrial and power management. A maxi-
mum input sense voltage of 500mV allows a wide range
of currents to be monitored. The fast response makes the
LTC6101 the perfect choice for load current warnings and
shutoff protection control. With very low supply current,
the LTC6101 is suitable for power sensitive applications.
The LTC6101 is available in 5-lead SOT-23 and 8-lead
MSOP packages.
R
IN
5V TO 105V
100Ω
–IN
+
V
5V
1μF
V
OUT
OUT
LTC2433-1
TO μP
R
OUT
4.99k
6101 TA01
SENSE
LTC6101/LTC6101HV
High Voltage,
Amplifi er in SOT-23
Step Response
V
SENSE
ΔV
= 100mV
SENSE
5.5V
5V
T
= 25°C
A
+
V
= 12V
R
= 100
IN
R
= 5k
V
OUT
OUT
+
+
V
= V
SENSE
I
= 100μA
OUT
0.5V
I
= 0
OUT
0V
500ns/DIV
6101 TA01b
6101fg
1