ZXCT1011

ZXCT1011 High-side low drift current monitor Description The ZXCT1011 is a high side current sense monitor. Using this type of device eliminates the need to disrupt the ground plane when sensing a load current. The ZXCT1011 takes the 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. A current reference resistor, external to the IC, results in an improved temperature coefficient compared to the ZXCT1009. The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications. With a minimum operating current of just 4uA, combined with its SOT23-5 package make it suitable for portable battery equipment too. Features ■ Accurate high-side current sensing ■ 2.5V to 20V supply range ■ 4 µA quiescent current ■ 1% typical accuracy ■ Package SOT23-5 ■ Temperature range -40 to 125°C Applications ■ Automotive current measurement ■ Battery management ■ DC motor and solenoid control ■ Over current monitor ■ Power management Typical application circuit Vin R sense Load Pin connections N/C Rshunt 120 Ω 3 5 Vsense+ Vsense+ 4 Vsense- Iout Rshunt V ZXCT1011 I out 2 Rout Vsense- GND Ordering information Order code ZXCT1011E5TA Pack SOT23-5 Part mark 1011 Reel Size inches (mm) 7 (180) Tape width 8mm Quantity Per reel 3,000 Issue 1- July 2005 © Zetex Semiconductors plc 2005 1 www.zetex.com ZXCT1011 Absolute...