Summary of TEXAS INSTRUMENTS TPS3899 PRECISION VOLTAGE SUPERVISOR
Texas Instruments TPS3899 is a nano-power precision voltage supervisor offering ±0.5% threshold accuracy, programmable sense and reset delays, and built-in hysteresis in a compact 1.5 mm × 1.5 mm WSON 6-pin package. It features separate VDD and SENSE pins for redundancy, high-impedance SENSE for external resistor use, and CTS/CTR pins for adjustable delays and debouncing/manual reset. The device prevents false resets, supports monitoring of different rail voltages, and is specified for –40°C to +125°C, making it suitable for industrial and battery-powered applications like factory automation, motor drives, and consumer products.
Parts used in the TPS3899 Precision Voltage Supervisor:
- TPS3899 precision voltage supervisor IC (6-pin WSON, 1.5 mm × 1.5 mm)
- VDD supply connection
- SENSE input pin and optional external resistors for voltage sensing
- CTS pin for delay adjustability, debouncing, and manual reset
- CTR pin for delay adjustability on RESET edges
- Decoupling capacitors for VDD and SENSE as needed
- PCB footprint for 6-pin WSON package
- Reset output connection to monitored system
Texas Instruments TPS3899 Precision Voltage Supervisor is a nano power, precision voltage supervisor with ±0.5% threshold accuracy, programmable sense, and reset time delay in a 6-pin space-saving 1.5mm x 1.5mm WSON package. The TPS3899 is a feature-rich voltage supervisor that offers the smallest total solution size in its class. Built-in hysteresis, along with programmable delay, prevents false reset signals when monitoring a voltage rail or push-button signals.
The separate VDD and SENSE pins allow for the redundancy sought by high-reliability systems. SENSE is decoupled from VDD and can monitor rail voltages other than VDD. Optional use of external resistors is supported by the high impedance input of the SENSE pin. Both CTS and CTR provide delay adjustability on the rising and falling edges of the RESET signals. CTS also functions as a debouncer by ignoring voltage glitches on the monitored voltage rails and operates as a “manual reset” that can be used to force a system reset.
The precision performance, best-in-class features in a compact form factor makes the Texas Instruments TPS3899 an ideal solution for wide-ranging industrial and battery-powered applications such as Factory/Building Automation, Motor Drives, and consumer products. The device is fully specified over a temperature range of –40°C to +125°C (TA)
Read more: TEXAS INSTRUMENTS TPS3899 PRECISION VOLTAGE SUPERVISOR
- What accuracy does the TPS3899 threshold provide?
The TPS3899 provides ±0.5% threshold accuracy according to the article. - Can the TPS3899 monitor a voltage rail different from VDD?
Yes. The separate SENSE pin is decoupled from VDD and can monitor rail voltages other than VDD. - Does the TPS3899 support external resistors on the sense input?
Yes. The high-impedance SENSE input supports optional use of external resistors. - What functions do the CTS and CTR pins provide?
Both CTS and CTR provide delay adjustability on the rising and falling edges of the RESET signals; CTS also functions as a debouncer and manual reset. - How does the TPS3899 prevent false reset signals?
Built-in hysteresis and programmable delay prevent false reset signals when monitoring a voltage rail or push-button signals. - What package and size is the TPS3899 offered in?
The device is offered in a 6-pin space-saving WSON package measuring 1.5 mm × 1.5 mm. - Is the TPS3899 suitable for industrial temperature ranges?
Yes. The device is fully specified over a temperature range of –40°C to +125°C. - What application areas are recommended for the TPS3899?
The article recommends factory and building automation, motor drives, and consumer products as application areas.
