ZXCT1009

ZXCT1009 HIGH-SIDE CURRENT MONITOR 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 4µA, combined with its SOT23 package make it a unique solution, suitable 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 & SM8† packages. APPLICATIONS Battery Chargers Smart Battery Packs DC Motor control Over current monitor Power Management Level translating Programmable current source APPLICATION CIRCUIT Vin Rsense To Load ZXCT 1009 Vout Rout ORDERING INFORMATION PART NUMBER ZXCT1009F ZXCT1009T8 PACKAGE SOT23 SM8 PARTMARKING 109 ZXCT1009 SM8 due for release May 2001 Sampling April 2001 † 8 leaded SOT223 ISSUE 3 - APRIL 2001 1 ZXCT1009 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Continuous output current Continuous sense voltage Operating Temperature Storage Temperature Package Power Dissipation SOT23 SM8 -0.6V to 20V (relative to I...