Diodes ZXCT1010 User Manual

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ISSUE 10 - JULY 2007
SEMICONDUCTORS
ZXCT1010
DESCRIPTION
The ZXCT1010 is a high side current sense monitor.
Using this device eliminates the need to disrupt the
ground plane when sensing a load current.
It is an enhanced version of the ZXCT1009 offering
reduced typical output offset and improved accuracy
at low sense voltage.
The wide input voltage range of 20V down to as low as
2.5V make it suitable for a range of applications. A
minimum operating current of just 4µA, combined
with its SOT23-5 package make suitable for portable
battery equipment.
FEATURES
Low cost, accurate high-side current sensing
Output voltage scaling
Up to 2.5V sense voltage
2.5V – 20V supply range
300nA typical offset current
3.5µA quiescent current
1% typical accuracy
SOT23 -5 package
APPLICATIONS
Battery chargers
Smart battery packs
DC motor control
Over current monitor
Power management
Programmable current source
ENHANCED HIGH-SIDE CURRENT MONITOR
APPLICATION CIRCUIT
DEVICE REEL
SIZE
TAPE
WIDTH
QUANTITY PER
REEL
ZXCT1010E5TA 7” 8mm 3,000 units
PARTMARK 101
PACKAGE SOT23-5
ORDERING INFORMATION
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Summary of Contents

Page 1 - ZXCT1010

1ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT1010DESCRIPTIONThe ZXCT1010 is a high side current sense monitor.Using this device eliminates the need to disru

Page 2

SEMICONDUCTORSZXCT1010ABSOLUTE MAXIMUM RATINGSVoltage on any pin -0.6V to 20V (relative to GND)Continuous output current, IOUT, 25mAContinuous sense v

Page 3

ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT10103TYPICAL CHARACTERISTICS

Page 4

4ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT1010PIN DESCRIPTIONPin Name Pin FunctionVsense+ Supply voltageVsense- Connection to load/batteryIoutOutput curr

Page 5

ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT10105The following lines describe how to scale a loadcurrent to an output voltage.Vsense= Vin-VloadVout= 0.01 x

Page 6

ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT10106Li-Ion Charger CircuitThe above figure shows the ZXCT1010 supportingthe Benchmarq bq2954 Charge Management

Page 7

ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT10107PCB trace shunt resistor for low costsolutionThe figure below shows output characteristics of thedevice whe

Page 8

ISSUE 10 - JULY 2007SEMICONDUCTORSZXCT10108DefinitionsProduct changeZetex Semiconductors reserves the right to alter, without notice, specifications,

Page 9

ZXCT1010SEMICONDUCTORSISSUE 10 - JULY 20079EuropeZetex GmbHKustermann-ParkBalanstraße 59D-81541 MünchenGermanyTelefon: (49) 89 45 49 49 0Fax: (49) 89

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