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| ZXCT1009 Datasheet, PDF (1/8 Pages) Zetex Semiconductors – HIGH-SIDE CURRENT MONITOR | |||
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HIGH-SIDE CURRENT MONITOR
ZXCT1009
DESCRIPTION
The ZXCT1009 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.
APPLICATIONS
⢠Battery Chargers
⢠Smart Battery Packs
⢠DC Motor control
⢠Over current monitor
⢠Power Management
⢠Level translating
⢠Programmable current source
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 package make it a unique solution,
suitable for portable battery equipment.
APPLICATION CIRCUIT
Vin Rsense
To Load
FEATURES
⢠Low cost, accurate high-side current sensing.
⢠Output voltage scaling.
⢠Up to 2.5V sense voltage.
⢠2.5V â 20V supply range.
⢠4µA quiescent current.
⢠1% typical accuracy.
⢠SOT23 & SM8â packages.
ZXCT
1009
Vout
Rout
â 8 leaded SOT223
ISSUE 3 - APRIL 2001
ORDERING INFORMATION
PART NUMBER
ZXCT1009F
ZXCT1009T8
PACKAGE PARTMARKING
SOT23
109
SM8
ZXCT1009
SM8 due for release May 2001
Sampling April 2001
1
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