TPS3307-33DR

The TPS3307-33DR from Texas Instruments is a micropower supply voltage supervisor IC designed for circuit initialization in DSP and processor-based systems. It monitors up to three supply voltages, offering fixed threshold options including 1.25V, 1.68V, 2.25V, 2.93V, and 4.55V, along with an adjustable option. The device features a power-on reset generator with a fixed delay time of 200ms and does not require an external capacitor. Its temperature-compensated voltage reference and low maximum supply current of 40µA make it suitable for power-sensitive applications. The TPS3307-33DR provides defined RESET output from VDD ≥ 1.1V and supports active-high or active-low outputs with a push-pull driver. It operates within a supply voltage range of 2V to 6V and has an operating temperature range of -40°C to 85°C. This supervisor is available in an 8-SOIC package, measuring 4.9 mm x 6 mm, suitable for surface mounting.

Key electrical characteristics include a reset threshold accuracy of 3.2% and a quiescent current of 0.04mA typical. The supervisor includes features such as complimentary output, manual reset capability, and separate VDD and sense inputs. It is designed to monitor undervoltage conditions only and does not incorporate a watchdog timer. The 8-SOIC package is standard for many electronic designs, facilitating integration into various circuit boards. The device's robust design ensures reliable operation across its specified temperature range, making it a dependable choice for system supervision tasks.