TC54xxxx

M Voltage Detector Features Precise Detection Thresholds: Standard ±2.0%, Custom ±1.0% Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89, 5-Pin SOT-23A (7.7V only) Low Current Drain: Typ. 1µA Wide Detection Range: 1.1V to 6.0V and 7.7V Wide Operating Voltage Range: 0.7V to 10V TC54 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 surface-mount packaging. Each part is laser trimmed to the desired threshold voltage which can be specified from 1.1V to 6.0V and 7.7V, for a 2% and 1.5V to 6.0V for a 1% tolerance. The device includes a comparator, low-current highprecision reference, laser-trimmed divider, hysteresis circuit and output driver. The TC54 is available with either an open-drain 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 VDET - the output is driven to a logic LOW. VOUT remains LOW until VIN rises above VDET - by an amount VHYST, whereupon it resets to a logic HIGH. Temp. Range -40°C to +85°C Applications Battery Voltage Monitoring Microprocessor Reset System Brown-out Protection Switching Circuit in Battery Backup Level Discriminator Device Selection Table Part Number TC54-xxxxxxxxxxx Package 3-Pin SOT-89 Functional Block Diagram 2 VIN TC54VC only TC54-xxxxxxxxxxx 3-Pin SOT-...