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TPS3808G33DBVR

3.3V voltage supervisor, 3.07V threshold, 0.5% accuracy, 2.4uA Iq, programmable delay, SOT-23-6

10603

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Manufacturer Part：

TPS3808G33DBVR

Package：

SOT-23-6 (DBV) 2.9x2.8 mm

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Description

Product Overview

The TPS3808G33DBVR from Texas Instruments is a low-quiescent-current voltage supervisor in SOT-23-6 package, monitoring a 3.3V rail with 3.07V threshold. It shares the same architecture as the TPS3808G18 but targets 3.3V systems, offering 0.5% threshold accuracy, programmable reset delay (1.25 ms to 10 s), manual reset, and 2.4 uA typical quiescent current.

Key Specifications

Monitored Rail 3.3V nominal
Threshold Voltage 3.07V (typical)
Threshold Accuracy 0.5% (typical)
Quiescent Current 2.4 uA (typical)
Reset Delay 1.25 ms to 10 s (programmable)
Manual Reset Yes (MR pin)
Reset Output Active-low, open-drain
Supply Voltage 1.8V – 6.5V
Package SOT-23-6 (DBV)
Temperature -40 to +125 deg C

Features

  • Precision 3.07V threshold with 0.5% accuracy for 3.3V rail monitoring
  • Ultra-low 2.4 uA quiescent current for battery-powered systems
  • Programmable delay via CT pin: 20 ms, 300 ms, or 1.25 ms to 10 s
  • Manual reset input for system-initiated resets
  • Immune to short negative transients on SENSE pin

Applications

  • 3.3V microcontroller and DSP power monitoring
  • Notebook and desktop computer 3.3V rail supervision
  • Battery-powered and portable device voltage monitoring
  • 3.3V FPGA and ASIC voltage supervision
  • Industrial and automotive 3.3V power rails

The TPS3808G33 is a 3.3V rail voltage supervisor from the TPS3808 family by Texas Instruments, featuring a 3.07V threshold with 0.5% typical accuracy. It provides an active-low open-drain RESET output when SENSE drops below threshold, with programmable delay from 1.25 ms to 10 seconds via the CT pin. The manual reset (MR) pin allows system-initiated resets. With 2.4 uA typical quiescent current and transient immunity on the SENSE pin, it is well-suited for battery-powered and industrial applications monitoring 3.3V rails.

The TPS3808G33 monitors the SENSE pin against an internal 3.07V precision reference. When SENSE voltage drops below the threshold, RESET is asserted low. The device is designed to be immune to short negative transients on SENSE, with immunity dependent on the threshold overdrive percentage. Reset delay is configured via the CT pin: open for 20 ms, connected to VDD via resistor for 300 ms, or connected to an external capacitor for 1.25 ms to 10 s range. The MR pin provides an additional active-low reset source. RESET remains asserted for the programmed delay after all fault conditions clear.

Pin Name Type Function
1 RESET Output Active-low reset (open-drain)
2 GND Power Ground
3 MR Input Manual reset (active low)
4 CT Input Delay programming
5 SENSE Input Voltage sense input
6 VDD Power Supply (1.8-6.5V)
  • 3.3V MCU/DSP brownout detection during power dips
  • Server 3.3V rail monitoring with programmable delay
  • Battery-powered IoT: 2.4 uA Iq enables always-on supervision
  • FPGA 3.3V I/O rail power-on reset generation
  • Industrial PLC: transient-immune 3.3V rail monitoring
Manufacturer Part Number Package Notes
TI TPS3808G18DBVR SOT-23-6 1.8V threshold variant
TI TPS3808G33DRVR WSON-6 Same function, WSON package
TI TPS3823-33DBVR SOT-23-5 3.3V supervisor, no MR pin
ADI ADM803RAKS SC-70 3.08V threshold supervisor
onsemi CAT811ZTBI-G3 SOT-23-5 3.08V reset IC
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Contact Information

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Tel / WhatsApp: +86 13760382860

Service & Packaging

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Contact Information

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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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