Características para el TPS3803
- Detector de voltaje único (TPS3803): ajustable/1,5 V
- Detector de voltaje doble (TPS3805): ajustable/3,3 V
- Alta precisión del voltaje umbral del ±1,5%
- Corriente de alimentación: 3 µA típico en VDD = 3.3 V
- Salida de restablecimiento de empuje/tracción (TPS3805) Salida de restablecimiento de drenaje abierto (TPS3803)
- Rango de temperatura: -40°C a +85°C
- Paquete SC-70 de 5 pines
- APLICACIONES
- Applications Using DSPs, Microcontrollers, or Microprocessors
- Wireless Communication Systems
- Portable/Battery-Powered Equipment
- Programmable Controls
- Intelligent Instruments
- Industrial Equipment
- Notebook/Desktop Computers
- Automotive Systems
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Descripción del TPS3803
Las familias de circuitos de supervisión TPS3803 y TPS3805 proporcionan supervisión de inicialización y temporización de circuitos, principalmente para DSP y sistemas basados en procesadores.
El dispositivo TPS3803G15 tiene una tensión umbral de sentido fijo VIT set by an internal voltage divider, whereas the TPS3803-01 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at VDD, the TPS3805 devices provide a second adjustable SENSE input. RESET is asserted in case any of the two voltages drops below VIT.
Durante la alimentación,RESET is asserted when supply voltage VDD becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors VDD (and/or SENSE) and keeps RESET active as long as VDD or SENSE remains below the threshold voltage VIT. As soon as VDD (SENSE) rises above the threshold voltage VIT , RESET is deasserted again. The product spectrum is designed for 1.5 V, 3.3 V, and adjustable supply voltages. The devices are available in a 5-pin SC-70 package.
Los dispositivos TPS3803 y TPS3805 se caracterizan para funcionar en un intervalo de temperatura de -40°C a +85°C.