ZXCT1022E5TA

ZXCT1022 Low offset high-side current monitor Description The ZXCT1022 is a precision high-side current giving better tolerances for small sense sense monitor. Using this type of device resistors necessary at higher currents. eliminates the need to disrupt the ground The wide input voltage range of 20V down to as plane when sensing a load current. low as 2.5V make it suitable for a range of The ZXCT1022 provides a fixed gain of 100 for applications. With a minimum operating applications where minimal sense voltage is current of just 25A, combined with its SOT23- required. 5 package make it suitable for portable battery equipment too. The very low offset voltage enables a typical accuracy of 3% for sense voltages of only 10mV, Features Applications Accurate high-side current sensing Battery chargers Ground referred output Smart battery packs 2.5V 20V supply range DC motor control 25 A quiescent current Over-current protection SOT23-5 package Power supply current measurement Level translating Pinout information Typical application circuit NC V - SENSE GND V + V SENSE OUT Pinout - top view Ordering information Order reference Package Device Status Reel size Quantity Tape width marking (inches) per reel (mm) ZXCT1022E5TA SOT23-5 1022 Active 7 3000 8 Issue 6 - March 2008 1 www.zetex.com Zetex Semiconductors plc 2008ZXCT1022 Absolute maximum ratings (*) -0.6V to 20V Voltage on V pin s+ (*) () (*)() -0.6V to V +0.5V Voltage on V V pin S+ s- OUT () -0.6V to +0.5V V SENSE Operating temperature -40 to 85C Storage temperature -55 to 150C Package power dissipation (T = 25C) A - SOT23-5 - 450mW NOTES: (*) with respect to GND pin () voltage not to exceed 20V () V = V - V SENSE S+ S- Pinout information Pin name Pin function N/C Not internally connected GND Ground V Voltage output referenced to GND. Intended to OUT drive high impedance loads V High impedance negative sense voltage input S V Supply and positive sense voltage input S+ Issue 6 - March 2008 2 www.zetex.com Zetex Semiconductors plc 2008