The TC51 is a very low power, open drain output, CMOS voltage detector with built-in delay. It is particularly well-suited for battery powered applications because of its 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 1.6V to 6.0V. The standard built-in output delay is 50msec-200msec. The device includes a comparator, low-current highprecision reference, laser-programmed voltage divider, hysteresis circuit and output driver with digital delay timer. In operation, the TC51’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 immediately driven to a logic LOW. VOUT remains LOW until VIN rises above VDET - by an amount VHYST, whereupon it returns to a logic HIGH after expiration of the built-in delay time.
Additional Features
Precise Detection Thresholds: ±2.0%
Small Package: 3-Pin SOT-23A
Low Supply Current: Typ. 1µA
Wide Detection Range: 1.6V to 6.0V
Wide Operating Voltage Range: 0.7V to 10V
Built-in Delay Circuit: 50msec to 200 msec
Open-Drain Output
The TC51 is a very low power, open drain output, CMOS voltage detector with built-in delay. It is particularly well-suited for battery powered applications because of its 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 1.6V to 6.0V. The standard built-in output delay is 50msec-200msec. The device includes a comparator, low-current highprecision reference, laser-programmed voltage divider, hysteresis circuit and output driver with digital delay timer. In operation, the TC51’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 immediately driven to a logic LOW. VOUT remains LOW until VIN rises above VDET - by an amount VHYST, whereupon it returns to a logic HIGH after expiration of the built-in delay time.
Additional Features
- Precise Detection Thresholds: ±2.0%
- Small Package: 3-Pin SOT-23A
- Low Supply Current: Typ. 1µA
- Wide Detection Range: 1.6V to 6.0V
- Wide Operating Voltage Range: 0.7V to 10V
- Built-in Delay Circuit: 50msec to 200 msec
- Open-Drain Output
