ZXCT1009T8TA Diodes Incorporated

ZXCT1009 HIGH-SIDE CURRENT MONITOR Description Pin Assignments SOT23 The ZXCT1009 is a high side current sense monitor. Using this device eliminates the need to disrupt the ground plane Package Suffix - F 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 VV 33 SESENNSSE-E- user defined output resistor scales the output current into a ground-referenced voltage. II 11 OUOUTT The wide input voltage range of 20V down to as low as 2.5V 22 VV make it suitable for a range of applications. A minimum SESENNSSE+E+ operating current of just 4A, combined with a SOT23 package make it a unique solution for portable battery ((TTop Vop Viieeww)) equipment. The SM8 device offers an alternative package option. SM8 Package Suffix T8 Features Low cost, accurate high-side current sensing Output voltage scaling VV 11 88 N/N/CC SESENNSSEE-- Up to 2.5V sense voltage 22 77 N/N/CC N/N/CC 2.5V to 20V supply range 4A quiescent current VV 33 66 N/N/CC SESENNSESE++ 1% typical accuracy 55 N/N/CC II 44 OUOUTT SOT23 and SM8 packages AEC-Q100.3 qualified ZXCT1009FTA only ((TTop Vop Viieeww)) Applications Battery chargers Smart battery packs DC motor control Over current monitor Power management Level translating Programmable current source Application Circuit RR SESENNSESE VV TToo lo loaadd ININ 22 33 VV VV SESENNSSE-E- SENSENSSE+E+ ZZXXCT1CT1000099 II OUOUTT 11 VV OUOUTT RR OUOUTT 1 of 8 April 2011 ZXCT1009 Diodes Incorporated www.diodes.com Document number: DS33441 Rev. 12 - 2 ZXCT1009 HIGH-SIDE CURRENT MONITOR Pin Descriptions Pin Name Pin Function V Connection to supply voltage SENSE+ V Connection to load SENSE- I Output current, proportional to measured current OUT Absolute Maximum Ratings (T = 25C) A Description Rating Unit -0.6 to 20 Voltage on any pin (relative to I ) V OUT Continous output current, I 25 mA OUT Continuous sense voltage, V -0.5 to +5 V SENSE Operating temperature, T -40 to 85 C A Storage temperature -55 to 125 C Package power 450 SOT23 mW dissipation T = 25C A SM8 2 W (Derate to zero 125C) Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings for extended periods may reduce device reliability. Electrical Characteristics (T = 25C, V = 5V, R = 100) A IN OUT Limits Symbol Parameter Conditions Units Min Typ Max V V range 2.5 20 V IN CC V = 0V SENSE 1 4 15 A V = 10mV 90 104 120 A SENSE 1 0.975 1.002 1.025 mA I Output Current V = 100mV OUT SENSE 1.95 2.0 2.05 mA V = 200mV SENSE 9.6 9.98 10.2 mA V = 1V SENSE V Sense Voltage 0 2500 mV SENSE V SENSE - I 100 nA SENSE- Input Current R = 0.1 SENSE A Accuracy CC V = 200mV -2.5 2.5 % SENSE Transconductance, G 10000 A/V M I /V OUT SENSE V = 10mv, RF P = -40dBm 300 kHz SENSE(DC) IN BW Bandwidth 2 MHz V = 100mv, RF P = -20dBm SENSE(DC) IN Notes: 1. Includes input offset voltage contribution . V is defined as the differential voltage between V and V . SENSE SENSE+ SENSE- V = V - V SENSE SENSE+ SENSE- = V - V IN LOAD = I x R LOAD SENSE -20dBm=63mV into 50 PP 2 of 8 April 2011 ZXCT1009 Diodes Incorporated www.diodes.com Document number: DS33441 Rev. 12 - 2