Datasheet ZXCT1009 (Diodes)

ZXCT1009 HIGH-SIDE CURRENT MONITOR Description Pin Assignments
The ZXCT1009 is a high side current sense monitor. Using
SOT23
this device eliminates the need to disrupt the ground plane
Package Suffix - F
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 V 3 SENSE- ground-referenced voltage. 1 I OUT The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications. A minimum V 2 VSENSE+ operating current of just 4µA, combined with a SOT23 package make it a unique solution for portable battery
(Top V T i op V ew e )
equipment. The SM8 device offers an alternative package option.
SM8 Package Suffix – T8 Features
• Low cost, accurate high-side current sensing • Output voltage scaling VSENSE- 1 • SENSE- 8 N/C N/ Up to 2.5V sense voltage • 2.5V to 20V supply range N/C 2 7 N/C • 4μA quiescent current V 3 6 N/C SENSE+ SE • 1% typical accuracy I 4 5 N/C • OUT SOT23 and SM8 packages • AEC-Q100.3 qualified; ZXCT1009FTA only
(Top V T i op V ew e ) Applications
• Battery chargers • Smart battery packs • DC motor control • Over current monitor • Power management • Level translating • Programmable current source •
Application Circuit R V SENSE VIN To lo o a lo d 2 3 V V SENS SEN E+ S SENS N E- S ZXCT1 X 009 IOUT OU 1 VOUT ROUT
ZXCT1009 1 of 8 April 2011 Document number: DS33441 Rev. 12 - 2
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