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PDF TSC1031 Data sheet ( Hoja de datos )
| Número de pieza | TSC1031 | |
| Descripción | high-side current sense amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TSC1031
High-voltage, high-side current sense amplifier
TSSOP8
(Plastic package)
SO-8
(Plastic package)
Pin connections
(top view)
Features
Independent supply and input common-mode
voltages
Wide common-mode operating range:
2.9 to 70 V in single-supply configuration
-2.1 to 65 V in dual-supply configuration
Wide common-mode surviving range:
-16 to 75 V (reversed battery and load-dump
conditions)
Supply voltage range:
2.7 to 5.5 V in single supply configuration
Datasheet - production data
Low current consumption: ICC max = 360 μA
Pin selectable gain: 50 V/V or 100 V/V
Buffered output
EMI filtering
Applications
Automotive current monitoring
DC motor control
Photovoltaic systems
Battery chargers
Precision current sources
Current monitoring of notebook computers
Uninterruptible power supplies
High-end power supplies
Description
The TSC1031 measures a small differential
voltage on a high-side shunt resistor and
translates it into a ground-referenced output
voltage. The TSC1031’s dedicated schematic
eases the implementation of EMI filtering in harsh
environments. The gain is adjustable to 50 V/V or
100 V/V by a selection pin.
Wide input common-mode voltage range, low
quiescent current, and tiny TSSOP8 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 2.9 to 70 V in the single-
supply configuration or be offset by an adjustable
voltage supplied on the Vcc- pin in the dual-
supply configuration.
With a current consumption lower than 360 μA
and a virtually null input leakage current in
standby mode, the power consumption in the
applications is minimized.
March 2014
This is information on a product in full production.
DocID016875 Rev 3
1/26
www.st.com
1 page  
TSC1031
Application schematic and pin description
Figure 3. Common-mode versus supply voltage in dual-supply configuration
Vicm
common-mode voltage
operating range
Max = 70 V
Max = 65 V
Max = 60 V
min = 2.9 V
Vcc- = 0 V
Single-supply
min = -2.1 V
Vcc- = -5 V
min = -7.1 V
Vcc- = -10 V
Dual-supply
AM04519
Table 1 describes the function of each pin. Their position is shown in the illustration on the
cover page and in Figure 1 on page 3.
Symbol
Out
Gnd
Vcc+
Vcc-
Vp
Vm
SEL
A1
Table 1. Pin description
Type
Function
Analog output
Power supply
The Out voltage is proportional to the magnitude of the sense
voltage Vp-Vm.
Ground line.
Power supply Positive power supply line.
Power supply Negative power supply line.
Analog input
Analog input
Digital input
Connection for the external sense resistor. The measured current
enters the shunt on the Vp side.
Connection for the external sense resistor. The measured current
exits the shunt on the Vm side.
Gain-select pin.
Analog output Connection to the output resistor.
DocID016875 Rev 3
5/26
26
5 Page 
TSC1031
Electrical characteristics curves: current sense amplifier
Figure 8. Vp pin input current vs. Vsense
40
35
30
25
20
15
10
5
0
-100
T = 25 °C
T = -40 °C
T = 125 °C
-50 0
Vsense (mV)
50
100
Figure 9. Vn pin input current vs. Vsense
20
18 T = 25 °C
16 T = -40 °C
14
12
10
8
6 T = 125 °C
4
2
0
-100
-50
0
Vsense (mV)
50
100
Figure 10. Output stage low-state saturation
voltage vs. output current
(Vsense = -1 V)
Figure 11. Output stage high-state saturation
voltage vs. output current
(Vsense = +1 V)
1200
1000
Output stage
sinking current
800
T = 125 °C
600
400
200
0
0
T = 25 °C
T = -40 °C
246
Iout (mA)
8
10
1200
1000
T = 125 °C
Output stage
sourcing current
800
600
400 T = -40 °C
T = 25 °C
200
0
-10
-8 -6 -4
Iout (mA)
-2
0
Figure 12. Output stage load regulation
Figure 13. Step response
1 T = -40 °C
0
-1 T = 125 °C
-2
T = 25 °C
-3
-4
-5 Output stage
sourcing current
-6
-10 -5
0
Iout (mA)
Output stage
sinking current
5 10
Vsense
Vout
Time base 4µs/div
Vsense 50mV/div
Vout 500mV/div
DocID016875 Rev 3
11/26
26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TSC1031.PDF ] | |
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