TSC1031 Datasheet, PDF (1/26 Pages) STMicroelectronics – High-voltage, high-side current sense amplifier

TSC1031
High-voltage, high-side current sense amplifier
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
■ Low current consumption: I_CC 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.
TSSOP8
(Plastic package)
SO-8
(Plastic package)
Vm 1
A1 2
SEL 3
Out 4
Pin connections
(top view)
8 Vp
7 Vcc-
6 Gnd
5 Vcc+
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.
April 2011
Doc ID 16875 Rev 2
1/26
www.st.com
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