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TPS3106K33DBVR

Dual Voltage Supervisor, 3.3V fixed + adjustable, watchdog, 1.5uA IQ, SOT-23-6

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Pieza del fabricante：

TPS3106K33DBVR

Paquete：

SOT-23-6 (2.9 x 1.6 x 1.1 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The TPS3106K33DBVR from Texas Instruments is a dual-voltage supervisor with ultra-low supply current, providing two precision voltage monitoring thresholds including a fixed 3.3 V (5%) threshold and an adjustable threshold. It features an integrated watchdog timer and manual reset input in a compact SOT-23-6 package.

Especificaciones

Tipo Dual Voltage Supervisor
Fixed Threshold 1 3.3 V (±5%)
Threshold 2 Adjustable (0.55V reference)
Supply Current 1.5 µA (typical)
Temporizador Watchdog Yes (adjustable timeout)
Manual Reset Yes (MR pin, active low)
Reset Output Active low, open drain
Reset Timeout 200 ms (typical)
Tensión de alimentación 1.2 V to 5.5 V
Paquete SOT-23-6 (2.9 x 1.6 mm)
Temperatura de funcionamiento -40°C to 125°C

Características

  • Ultra-low supply current: 1.5 µA typical
  • Dual voltage monitoring with fixed 3.3V and adjustable thresholds
  • Integrated watchdog timer with adjustable timeout
  • Manual reset input (MR) with internal debouncing
  • Active-low open-drain reset output
  • 200 ms reset timeout period

Aplicaciones

  • Microcontroller and DSP power supply monitoring
  • FPGA and processor reset control
  • Industrial control system supervision
  • Portable and battery-powered systems
  • Telecom and networking equipment

The TPS3106K33DBVR from Texas Instruments is a dual-voltage supervisor with ultra-low 1.5 µA supply current designed for monitoring two supply rails simultaneously. It provides a fixed 3.3 V (±5%) threshold for monitoring the main logic supply and an adjustable threshold (0.55 V reference) for monitoring a secondary supply. The integrated watchdog timer monitors processor activity and asserts reset if the software fails to toggle the WDI pin within the timeout period. A manual reset (MR) input allows push-button reset capability. The active-low open-drain reset output is asserted during power-up, power-down, brownout, and watchdog timeout conditions with a 200 ms reset timeout. The SOT-23-6 package enables compact PCB layouts.

The TPS3106K33DBVR monitors two voltage rails continuously using precision comparators. The fixed 3.3 V threshold (SENSE1) uses an internal resistor divider to set the trip point at 3.3 V -5%. The adjustable threshold (SENSE2) compares an external voltage against a 0.55 V internal reference. When either monitored voltage falls below its threshold, or when the manual reset (MR) pin is pulled low, the reset output is asserted (pulls low). The 200 ms reset timeout keeps the output asserted for a minimum period after all fault conditions clear. The watchdog timer monitors the WDI pin; if no transition occurs within the timeout period (set by an external capacitor on the WDO pin), the reset output is asserted. The ultra-low 1.5 µA supply current makes the device suitable for always-on battery-powered systems.

Pin Nombre Tipo Función
1 MR Entrada Manual reset (active low, internal pullup)
2 GND Suelo Suelo
3 RESET Salida Active-low reset output (open drain)
4 SENSE2 Entrada Adjustable voltage sense input (0.55V ref)
5 VDD Potencia Power supply (1.2-5.5V)
6 SENSE1 Entrada Fixed 3.3V sense input
  • Microcontroller and DSP dual-supply monitoring (3.3V + adjustable)
  • FPGA core and I/O voltage supervision with watchdog
  • Industrial PLC and control system power monitoring
  • Portable devices requiring ultra-low current supervisors
  • Telecom board reset and power-fail detection
Fabricante Número de pieza Paquete Notas
Texas Instruments TPS3109K33DBVR SOT-23-6 Similar, without watchdog
Texas Instruments TPS3839K33DBVR SOT-23-3 Single threshold, 3.3V, ultra-low IQ
Dispositivos analógicos ADM811LARTZ SOT-23-5 Single supervisor, 3.3V, 150nA IQ
onsemi NCP303LSN27T1G TSOP-5 Adjustable, 0.9V threshold, low IQ
Maxim Integrated MAX803TXYR SOT-23-3 3.08V threshold, 1µA IQ
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