ZXCT1021_06 ZETEX [Zetex Semiconductors], ZXCT1021_06 Datasheet

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ZXCT1021_06

Manufacturer Part Number
ZXCT1021_06
Description
Low offset high-side current monitor
Manufacturer
ZETEX [Zetex Semiconductors]
Datasheet
ZXCT1021
Low offset high-side current monitor
Description
The ZXCT1021 is a precision high-side current
sense monitor. Using this type of device
eliminates the need to disrupt the ground
plane when sensing a load current.
The ZXCT1021 provides a fixed gain of 10 for
applications where minimal sense voltage is
required.
The very low offset voltage enables a typical
accuracy of 3% for sense voltages of only 10mV,
Features
Pinout information
Ordering information
Issue 7 - June 2006
© Zetex Semiconductors plc 2006
V
Order reference
ZXCT1021E5TA
GND
OUT
NC
Accurate high-side current sensing
Output voltage scaling
2.5V – 20V supply range
25mA quiescent current
1% typical accuracy
SOT23-5 package
Pinout - top view
Package
SOT23-5
V
V
SENSE
SENSE
-
+
marking
Device
1021
Released
1
Status
Typical application circuit
giving better tolerances for small sense
resistors necessary at higher currents.
The wide input voltage range of 20V down to as
low as 2.5V make it suitable for a range of
applications.
current of just 25µA, combined with its SOT23-
5 package make it suitable for portable battery
equipment too.
Applications
Battery chargers
Smart battery packs
DC motor control
Over current monitor
Power management
Level translating
Programmable current source
Reel size
(inches)
7
With
Quantity
a
per reel
3000
minimum
www.zetex.com
Tape width
(mm)
operating
8

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ZXCT1021_06 Summary of contents

Page 1

ZXCT1021 Low offset high-side current monitor Description The ZXCT1021 is a precision high-side current sense monitor. Using this type of device eliminates the need to disrupt the ground plane when sensing a load current. The ZXCT1021 provides a fixed gain ...

Page 2

Absolute maximum ratings Voltage on any pin with respect to END pin V SENSE Operating temperature Storage temperature Package power dissipation SOT23-5 Pinout information Pin name Pin function N/C Not internally connected GND Ground V Voltage output referenced to GND. ...

Page 3

Electrical characteristics test conditions T Symbol Parameter V V range Output voltage OUT R Output resistance OUT (*) Output voltage T C temperature coefficient I Ground pin current Q (†) Sense voltage V SENSE I V load ...

Page 4

Typical characteristics Issue 7 - June 2006 © Zetex Semiconductors plc 2006 4 ZXCT1021 www.zetex.com ...

Page 5

Typical characteristics Issue 7 - June 2006 © Zetex Semiconductors plc 2006 5 ZXCT1021 www.zetex.com ...

Page 6

Application information The ZXCT1021 has a fixed dc voltage gain of 100. No external scaling resistors are required for the output. Output voltage is simply defined as 100 x V (V) OUT SENSE Where ...

Page 7

Issue 7 - June 2006 © Zetex Semiconductors plc 2006 Intentionally left blank 7 ZXCT1021 www.zetex.com ...

Page 8

Package outline - SOT23-5 DIM Min. A 0.90 A1 0.00 A2 0.90 b 0.20 C 0.09 D 2.70 E 2. 0.10 a° 0° Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches ...

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