Figure 5-1. 5-Pin SOT-23 TPS38…

TPS3828-33DBV

VOLTAGE MONITOR 3.3V WDT OPEN DRAIN SOT-23

TPS3828-33DBV is a 3.3V voltage monitor with watchdog timer, SOT-23 package, operating temperature -40°C to 85°C, featuring manual reset input and open-drain reset output.Checked against the datasheet

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Technical parameters

Key specs

Voltages monitored1

Threshold voltage2.86 ~ 3 VMax: 3.00 V (TA = -40°C to 85°C)

Reset timeout1.6 s

OutputOpen drain

Datasheet-verified parameters

22 items

Parameter	Value and test conditions	Source
Monitors	1
Negative-going input threshold voltage	Min: 2.86 V, Nom: 2.93 V, Max: 3.00 V (TA = -40°C to 85°C)
Watchdog timer time-out	1.6 s
Reset output type	Open drain
Package	SOT-23 (5)
Operating free-air temperature range	Min: -40 °C, Max: 85 °C
Grade	Commercial
Supply voltage	Min: 1.1 V, Max: 5.5 V
Supply current	Typ: 15 μA, Max: 25 μA (WDI, MR and outputs unconnected)
Power-up reset voltage	Max: 0.9 V (V_OL(max)=0.4V, I_OL(Sink)=20μA)
Hysteresis at VDD input	Max: 30 mV
High level input voltage	Min: 0.7 × VDD (at MR and WDI)
Low level input voltage	Max: 0.3 × VDD
High-level output voltage	Min: 0.8 × VDD (VDD = V_IT- + 0.2V, I_OH = -30μA)
Low-level output voltage	Max: 0.4 V (VDD = V_IT- - 0.2V, I_OL = 1.2mA)
Output short-circuit current	Max: -400 μA (VDD = V_IT-,max + 0.2V, V_O = 0V)
Internal pullup resistor at MR	Max: 90 kΩ
Input capacitance	Typ: 5 pF (at MR, WDI; V_I = 0V to 5.5V)
Absolute Maximum Ratings Voltage	VDD: Min -0.3 V, Max 6 V; RESET, MR, WDI: Min -0.3 V, Max VDD + 0.3 V
Absolute Maximum Ratings Temperature	Operating: Min -40 °C, Max 85 °C; Storage: Min -65 °C, Max 150 °C
Electrostatic discharge HBM	±2000 V
Electrostatic discharge CDM	±500 V

All parameters (7)ExpandCollapse

Power
Negative-going input threshold voltage	2.93 V (Nom)
Supply current	15 μA (Typ)
Supply voltage	1.1 V (Min) to 5.5 V (Max)
Environment and package
Operating free-air temperature	-40 °C (Min) to 85 °C (Max)
Package	SOT-23 (5)
Other
Reset output type	Open-drain
Watchdog timer	1.6s

Pinout and package

Pin	Name	Function
1	RESET	(Active-low reset output, open-drain)
2	GND	(Ground)
3	MR	(Manual-reset input, active-low)
4	WDI	(Watchdog timer input)
5	VDD	(Supply voltage)

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DatasheetDatasheet · 1.1 MB · 2026-10-29

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