TPS3842

ACTIVE

42V, small size undervoltage or overvoltage supervisor with programmable delay and de-glitch

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Data sheet

document-pdfAcrobat TPS3842 42V Small Size, 850nA Undervoltage or Overvoltage Supervisor With Programmable Delay and De-Glitch datasheet (Rev. B) PDF | HTML

TPS3842

ACTIVE

Data sheet

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Product details

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

Adjustable

Features

Detection time delay, Low Quiescent Current, Overvoltage monitor only, Reset time delay, Separate VDD & sense, Undervoltage monitor only

Reset threshold accuracy (%)

0.5

Iq (typ) (mA)

0.00085

Output driver type/reset output

Active-high, Active-low, Open-drain

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

Adjustable

Features

Detection time delay, Low Quiescent Current, Overvoltage monitor only, Reset time delay, Separate VDD & sense, Undervoltage monitor only

Reset threshold accuracy (%)

0.5

Iq (typ) (mA)

0.00085

Output driver type/reset output

Active-high, Active-low, Open-drain

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 125

SOT-5X3 (DRL)

6

2.56 mm² (1.6 mm × 1.6 mm)

Wide supply voltage range: 1.9V to 42V
VDD, SENSE, and RESET are rated to 42V
Low quiescent current: 850nA (typical)
High threshold accuracy: 0.5% (typical)
Fixed internal threshold voltages: 2.7V to 9.5V
Adjustable voltage variant: 0.7V
Capacitor adjustable delay time with CTR pin
Capacitor adjustable de-glitch time with CTS pin
Undervoltage open-drain, active-low output
Overvoltage open-drain, active-low and active-high output
Temperature range: –40°C to 125°C
Small size: SOT5X3 (DRL)

Wide supply voltage range: 1.9V to 42V
VDD, SENSE, and RESET are rated to 42V
Low quiescent current: 850nA (typical)
High threshold accuracy: 0.5% (typical)
Fixed internal threshold voltages: 2.7V to 9.5V
Adjustable voltage variant: 0.7V
Capacitor adjustable delay time with CTR pin
Capacitor adjustable de-glitch time with CTS pin
Undervoltage open-drain, active-low output
Overvoltage open-drain, active-low and active-high output
Temperature range: –40°C to 125°C
Small size: SOT5X3 (DRL)

The TPS3842 is a 42V voltage supervisor with 850nA IDD, 0.5% accuracy, and a fast detection time. This device directly connects to 12V / 24V voltage rail for continuous monitoring of undervoltage (UV) or overvoltage (OV) conditions. The TPS3842 comes in a small DRL package for size constrained applications. Built-in hysteresis on the SENSE pin prevents false reset signals when monitoring a supply voltage rail. 1%, 5%, and 10% hysteresis voltage options are available to offer design flexibility to support voltage transients.

SENSE is decoupled from VDD and can monitor higher and lower voltages than VDD. Fixed threshold variants provide accurate low-Iq voltage monitoring. Adjustable threshold variants offer flexible undervoltage threshold setting with external resistors. TPS3842 offers capacitor programmable de-glitch on the SENSE with the CTS pin and capacitor programmable reset delay timing with the CTR pin.

The TPS3842 is a 42V voltage supervisor with 850nA IDD, 0.5% accuracy, and a fast detection time. This device directly connects to 12V / 24V voltage rail for continuous monitoring of undervoltage (UV) or overvoltage (OV) conditions. The TPS3842 comes in a small DRL package for size constrained applications. Built-in hysteresis on the SENSE pin prevents false reset signals when monitoring a supply voltage rail. 1%, 5%, and 10% hysteresis voltage options are available to offer design flexibility to support voltage transients.

SENSE is decoupled from VDD and can monitor higher and lower voltages than VDD. Fixed threshold variants provide accurate low-Iq voltage monitoring. Adjustable threshold variants offer flexible undervoltage threshold setting with external resistors. TPS3842 offers capacitor programmable de-glitch on the SENSE with the CTS pin and capacitor programmable reset delay timing with the CTR pin.

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Top documentation	Type	Title	Format options	Date
*	Data sheet	TPS3842 42V Small Size, 850nA Undervoltage or Overvoltage Supervisor With Programmable Delay and De-Glitch datasheet (Rev. B)	PDF \| HTML	Oct 1, 2025
	Functional safety information	TPS3842 Functional Safety FIT Rate, FMD and Pin FMA	PDF \| HTML	Aug 26, 2025

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Evaluation board

TPS3842EVM — TPS3842 evaluation module

The TPS3842EVM is an evaluation module (EVM) for the TPS3842-Q1 and TPS3842 family of voltage supervisors. The purpose of the this EVM is to provide a sample design and test point for all input and output pins of the TPS3842 and TPS3842-Q1 device to capture measurements and gain familiarity with (...)

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Simulation model