TC54

DataSheet.in 1 TC54 VOLTAGE DETECTOR FEATURES s s s s s Precise Detection Thresholds .... Standard ± 2.0% Custom ± 1.0% Small Packages ........... SOT-23A-3, SOT-89, TO-92 Low Current Drain ..................................... Typ. 1µA Wide Detection Range .......................... 2.1V to 6.0V Wide Operating Voltage Range ............ 1.5V to 10V GENERAL DESCRIPTION The TC54 Series are CMOS voltage detectors, suited especially for battery-powered applications because of their extremely low 1µA operating current and small surfacemount packaging. Each part is laser trimmed to the desired threshold voltage which can be specified from 2.1V to 6.0V, in 0.1V steps. The device includes a comparator, low-current highprecision reference, laser-trimmed divider, hysteresis circuit and output driver. The TC54 is available with either an opendrain or complementary output stage. In operation, the TC54's output (VOUT) remains in the logic HIGH state as long as VIN is greater than the – specified threshold voltage (VDET ). When VIN falls below – V DET, the output is driven to a logic LOW. VOUT remains LOW until VIN rises above V– DET by an amount V HYST, whereupon it resets to a logic HIGH. 2 3 4 5 6 7 APPLICATIONS s s s s s Battery Voltage Monitoring Microprocessor Reset System Brownout Protection Switching Circuit in Battery Backup Level Discriminator PIN CONFIGURATIONS *SOT-23A-3 VIN 2 1 2 3 SOT-89-3 TO-92 ORDERING INFORMATION PART CODE TC54 V X XX X X X XX XXX Output form: N =...