zxct1008 Zetex Semiconductors plc., zxct1008 Datasheet

no-image

zxct1008

Manufacturer Part Number
zxct1008
Description
Zxct1008 - Automotive High-side Current Monitor
Manufacturer
Zetex Semiconductors plc.
Datasheet
AUTOMOTIVE HIGH-SIDE CURRENT MONITOR
ISSUE 4 - JULY 2007
DESCRIPTION
The ZXCT1008 is a high side current sense monitor.
Using this device eliminates the need to disrupt the
ground plane when sensing a load current.
It takes a high side voltage developed across a current
shunt resistor and translates it into a proportional
output current.
A user defined output resistor scales the output
current into a ground-referenced voltage.
The wide input voltage range of 20V down to as low as
2.5V make it suitable for a range of applications. The
ability to withstand high voltage transients and
reverse polarity connection, makes this part very
suitable for automotive and other transient rich
environments.
FEATURES
ORDERING INFORMATION
DEVICE MARKING
Low cost, accurate high-side current sensing
-40 to +125°C temperature range
Up to 500mV sense voltage
2.5V – 20V supply range
4µA quiescent current
1% typical accuracy
SOT23
108
ZXCT1008FTA
DEVICE
REEL
SIZE
7”
WIDTH
TAPE
8mm
QUANTITY PER
3,000 units
REEL
1
APPLICATIONS
APPLICATION CIRCUIT
Automotive current measurement
DC motor and solenoid control
Over current monitor
Power management
ZXCT1008

Related parts for zxct1008

zxct1008 Summary of contents

Page 1

... AUTOMOTIVE HIGH-SIDE CURRENT MONITOR DESCRIPTION The ZXCT1008 is a high side current sense monitor. Using this device eliminates the need to disrupt the ground plane when sensing a load current. It takes a high side voltage developed across a current shunt resistor and translates it into a proportional output current. ...

Page 2

... ZXCT1008 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Continuous output current OUT † Continuous sense voltage, V SENSE Operating temperature Storage temperature Package power dissipation (T = 25°C) A Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extented periods, may reduce device reliability. ...

Page 3

... ISSUE 4 - JULY 2007 TYPICAL CHARACTERISTICS 3 ZXCT1008 ...

Page 4

... ZXCT1008 TYPICAL CHARACTERISTICS (Cont.) PIN DESCRIPTION Pin Name Pin Function V + Supply voltage sense V - Connection to load/battery sense I Output current, proportional to V out CONNECTION DIAGRAM SOT23 Package Suffix – F Top View SCHEMATIC DIAGRAM -V in load 4 ISSUE 4 - JULY 2007 ...

Page 5

... The device power dissipation given by the D expression .( Watts D out in out ISSUE 4 - JULY 2007 ZXCT1008 APPLICATIONS INFORMATION The following lines describe how to scale a load current to an output voltage sense in load out sense E. current represented by a 100mV output ...

Page 6

... ZXCT1008 Where R represents any load including DC load motors, a charging battery or further circuitry that requires monitoring, R can be selected on sense specific requirements of accuracy, size and power rating. An additional resistor, Rlim can be added in series with Rout (figure 1.0), to limit the current from I Any circuit connected to Vout will be protected from input voltage transients ...

Page 7

... Effect of Sense Resistor Material on Temperature Performance ISSUE 4 - JULY 2007 ZXCT1009 Vout GND Actual Size V with Copper OUT Sense Resistor 80 100 120 140 7 ZXCT1008 ZXCT1009 Vout Vin Vin Load Load GND Layout shows area of shunt resistor compared to SOT23 package. Not actual size ...

Page 8

... ZXCT1008 Definitions Product change Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or service. Customers are solely responsible for obtaining the latest relevant information before placing orders. Applications disclaimer The circuits in this design/application note are offered as design ideas the responsibility of the user to ensure that the circuit is fit for the user's application and meets with the user's requirements ...

Page 9

... Asia Pacific Zetex (Asia) Ltd 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 asia.sales@zetex.com 9 ZXCT1008 Max. 0.104 0.055 0.024 0.024 Corporate Headquarters Zetex Semiconductors plc Lansdowne Road, Chadderton Oldham, OL9 9TY ...

Related keywords