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TSC101BILT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
March 2011 Doc ID 13313 Rev 3 1/18
18
TSC101
High side current sense amplifier
Features
■ Independent supply and input common-mode
voltages
■ Wide common-mode operating range:
2.8 to 30 V
■ Wide common-mode surviving range:
-0.3 to 60 V (load-dump)
■ Wide supply voltage range: 4 to 24 V
■ Low current consumption: I
CC
max = 300 µA
■ Internally fixed gain: 20 V/V, 50 V/V or 100 V/V
■ Buffered output
Applications
■ Automotive current monitoring
■ Notebook computers
■ DC motor controls
■ Photovoltaic systems
■ Battery chargers
■ Precision current sources
Description
The TSC101 measures a small differential voltage
on a high-side shunt resistor and translates it into
a ground-referenced output voltage. The gain is
internally fixed.
Wide input common-mode voltage range, low
quiescent current, and tiny SOT23 packaging
enable use in a wide variety of applications.
The input common-mode and power supply
voltages are independent. The common-mode
voltage can range from 2.8 to 30 V in operating
conditions and up to 60 V in absolute maximum
rating conditions.
The current consumption below 300 µA and the
wide supply voltage range enable the power
supply to be connected to either side of the
current measurement shunt with minimal error.
L
SOT23-5
(Plastic package)
2
1
3V
p
Ou
t
Gnd
4
5
Vm
Vcc
Pin connections
(top view)
www.st.com
Application schematics and pin description TSC101
2/18 Doc ID 13313 Rev 3
1 Application schematics and pin description
The TSC101 high-side current sense amplifier features a 2.8 to 30 V input common-mode
range that is independent of the supply voltage. The main advantage of this feature is that it
allows high-side current sensing at voltages much greater than the supply voltage (V
CC
).
Figure 1. Application schematics
Table 1 describes the function of each pin. The pin positions are shown in the illustration on
the cover page and in Figure 1 above.
Table 1. Pin descriptions
Symbol Type Function
Out Analog output
Output voltage, proportional to the magnitude of the sense voltage
V
p
-V
m
.
Gnd Power supply Ground line
V
CC
Power supply Positive power supply line
V
p
Analog input
Connection for the external sense resistor. The measured current
enters the shunt on the V
p
side.
V
m
Analog input
Connection for the external sense resistor. The measured current
exits the shunt on the V
m
side.
6
SENSE
6OUT!VX6SENSE
6
P
6
M
/UT
'ND
6
##
LOAD
)
LOAD
TO6
2G
2G
2G
2
SENSE
TO6
!-
TSC101 Absolute maximum ratings and operating conditions
Doc ID 13313 Rev 3 3/18
2 Absolute maximum ratings and operating conditions
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
id
Input pins differential voltage (V
p
-V
m
)±60V
V
i
Input pin voltages (V
p
and V
m
)
(1)
1. Voltage values are measured with respect to the ground pin.
-0.3 to 60 V
V
CC
DC supply voltage
(1)
-0.3 to 25 V
V
out
DC output pin voltage
(1)
-0.3 to V
CC
V
T
stg
Storage temperature -55 to 150 °C
T
j
Maximum junction temperature 150 °C
R
thja
SOT23-5 thermal resistance junction to ambient 250 °C/W
ESD
HBM: human body model
(2)
2. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
2.5 kV
MM: machine model
(3)
3. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
150 V
CDM: charged device model
(4)
4. Charged device model: all pins plus package are charged together to the specified voltage and then
discharged directly to the ground.
1.5 kV
Table 3. Operating conditions
Symbol Parameter Value Unit
V
CC
DC supply voltage from T
min
to T
max
4.0 to 24 V
T
oper
Operational temperature range (T
min
to T
max
) -40 to 125 °C
V
icm
Common mode voltage range 2.8 to 30 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

TSC101BILT

Mfr. #:
Buy TSC101BILT
Manufacturer:
STMicroelectronics
Description:
Current Sense Amplifiers HIGH SIDE CURRENT INT FIXED GAIN 50V/V
Lifecycle:
New from this manufacturer.
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