Texas Instruments Introduced Nano 125 nA IQ, 1% Accurate Voltage Supervisor, Push-Button Monitor with Programmable Sense and Reset Delay

Texas Instruments TPS3899

Texas Instruments introduced nano-IQ, precision voltage supervisor TPS3899 that monitors system voltages or pushbutton inputs as low as 0.51 V. When the voltage of SENSE drops below the VIT- threshold, /RESET will toggle after the programmed sense delay, set by CTS, has been reached. The TPS3899 asserts an open-drain or push-pull /RESET signal to active-low logic (RESET) or active-high logic (RESET). The /RESET output remains active until the SENSE voltage returns above the rising voltage threshold (VIT- + VHYS) for the reset delay set by CTR.

Texas Instruments - TPS3899

The TPS3899 family uses a precision reference to achieve ±1% threshold accuracy. The sense delay and reset delay time can be user-adjusted by connecting a capacitor to the CTS and CTR pins respectively. The TPS3899 has a nano quiescent current of 125 nA (typ) and is available in a small 1.5- mm × 1.5-mm WSON package, making the device well-suited for battery-powered and spaceconstrained applications. The device is fully specified over a temperature range of –40 °C to +125 °C (TA).

Typical Application Circuit
Typical Application Circuit.


  • VDD range: 0.7 V to 6 V
  • Programmable sense and reset delay
  • Nano quiescent current: 125 nA (typ)
  • High threshold accuracy: ±0.5% (typ)
  • Precision hysteresis: 5% (typ)
  • Adjustable threshold voltage: 0.51 V (typ)
  • Multiple output topologies
    • DL: open-drain active-low
    • PL: push-pull active-low
    • PH: push-pull active-high
  • Temperature range: –40 °C to +125 °C
  • Package: 1.5-mm × 1.5-mm WSON


  • Electricity meters
  • Building Automation
  • Body Control Module (BCM)
  • Data center and enterprise computing
  • Notebooks, desktop computers, servers
  • Smartphones, hand-held products
  • Portable, battery-powered equipment
  • Solid-state drives
  • STB & DVR
TPS3899EVM TPS3899 Nanopower Supervisor Evaluation Module Board
TPS3899EVM TPS3899 Nanopower Supervisor Evaluation
Module Board.

1-4 Layer PCBs $2

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