DESCRIPTION The ZXCT1009 is a high side current sense monitor Using this device eliminates the need to disrupt the ground plane when sensing a load current

1 SEMICONDUCTORS DESCRIPTION The ZXCT1009 is a high side current sense monitor. Using this device eliminates the need to disrupt the ground plane 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 ground-referenced voltage. The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications. A minimum operating current of just 4A, combined with its SOT23 package make it a unique solution for portable battery equipment. FEATURES • Low cost, accurate high-side current sensing • Output voltage scaling • Up to 2.5V sense voltage • 2.5V – 20V supply range • 4µA quiescent current • 1% typical accuracy • SOT23 and SM8 packages APPLICATIONS • Battery chargers • Smart battery packs • DC motor control • Over current monitor • Power management • Level translating • Programmable current source ZXCT1009 ISSUE 7 - JULY 2004 HIGH-SIDE CURRENT MONITOR APPLICATION CIRCUIT DEVICE REEL SIZE TAPE WIDTH QUANTITY PER REEL PARTMARKING PACKAGE ZXCT1009FTA 7” 8mm 3,000 units 109 SOT23 ZXCT1009T8TA 7” 12mm 1,000 units ZXCT1009 SM8 ORDERING INFORMATION

• output current


• vsense - supply voltage


• voltage developed


• pin


• vin


• °c package power


• vsense