TSC1021 datasheet(1/12 Pages) STMICROELECTRONICS

部件名	TSC1021

功能描述	High-side current sense amplifier

PDF	12 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 12 page

September 2010

Doc ID 17857 Rev 1

1/12

12

TSC1021

High-side current sense amplifier

Features

■ Wide common-mode operating range

independent of supply: 2.8 to 30 V

■ Wide common-mode surviving range:

-32 to 60 V (reversed battery and load-dump

conditions)

■ Maximum input offset voltage:

– ±1.5 mV for Tamb = 25°C

– ±2.3 mV for -40°C < Tamb < 125°C

■ Maximum total output voltage error:

– ±1.5% for Tamb = 25°C

– ±2.5% for -40°C < Tamb < 125°C

■ Maximum variation over temperature:

–dVos/dT = 8 µV/°C

–dVout/dT = 100 ppm/°C

■ Low current consumption: ICC max = 300 µA

■ -40 to 125°C operating temperature range

■ Internally fixed gain: 20 V/V, 50 V/V

■ EMI filtering

Applications

■ Automotive current monitoring

■ Notebook computers

■ Server power supplies

■ Telecom equipment

■ Industrial SMPS

■ Current sharing

■ LED current measurement

Description

The TSC1021 measures a small differential

voltage on a high-side shunt resistor and

translates it into a ground-referenced output

voltage.

The TSC1021 has been specifically designed to

deal with automotive conditions: load-dump

protection up to 60 V, reverse-battery protection

up to -32 V, ESD protection up to 4 kV and

internal filtering for EMI performance.

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 ratings while the

TSC1021 can be supplied by a 5 V independent

supply line.

The TSC1021 is housed in a tiny TSSOP8

package and integrates a buffer that provides low

impedance output to ease interfacing and avoid

accuracy losses. The overall device current

consumption is lower than 300 µA.

TSSOP8

(Plastic package)

www.st.com

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