ZXCT1081

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 VCC 1 GND 2 OUT 3 5 SENSE4 SENSE+ Features 3V to 40V continuous high side voltage Accurate high-side current sensing Output voltage scaling x10 4.5V to 12V VCC range Low quiescent current: o 80 μA supply pin o 30 μA ISENSE+ 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 45 SENSE+ SENSE- VCC 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 A Product Line of Diodes Incorporated ZXCT1081 Pin Description Pin Name Description 1 VCC This is the analogue supply and provides power to internal circuitry 2 GND Ground pin 3 OUT Output voltage pin. NMOS source follower with 20μA bias to ground This is the positive input of the current monitor and has an input range from 40V 4 SEN...