ZXCT1081 Datasheet, PDF (1/11 Pages) Zetex Semiconductors – High voltage high-side current monitor

A Product Line of
Diodes Incorporated
ZXCT1081
HIGH VOLTAGE HIGH-SIDE CURRENT MONITOR
Description
The ZXCT1081 is a high side current sense monitor with a
gain of 10 and a voltage output. Using this device
eliminates the need to disrupt the ground plane when
sensing a load current.
The wide input voltage range of 40V down to as low as 3V
make it suitable for a range of applications; including
systems operating from industrial 24-28V rails and power
supplies.
Pin Assignments
V_CC 1
GND ²
OUT 3
5 SENSE-
4 _SENSE+
Features
• 3V to 40V continuous high side voltage
• Accurate high-side current sensing
• Output voltage scaling x10
• 4.5V to 12V V_CC range
• Low quiescent current:
o 80 μA supply pin
o 30 μA I_SENSE+
• SOT23-5 package
• -40°C to 125°C ambient temperature range
Applications
• Automotive current measurement
• Industrial applications current measurement
• Battery management
• Over current monitor
• Power management
• Power adapters
Typical Application Circuit
VIN
RSENSE
4
5
SENSE+
SENSE-
V_CC
1 _{Vcc ZXCT1081}
GND
2
OUT
3
VOUT
ZXCT1081
Document number: DS32102 Rev. 1 - 2
1 of 11
www.diodes.com
March 2010
© Diodes Incorporated