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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Texas Instruments TPS3837E18DBVTG4

Name: TPS3837E18DBVTG4
Brand: Texas Instruments
SKU: TPS3837E18DBVTG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3837E18DBVTG4

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3837E18DBVTG4.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

TPS3837E18DBVTG4 from Texas Instruments is a nano-power voltage supervisor IC with active-high push-pull RESET output, 1.71 V threshold voltage (V_IT), 10 ms/200 ms selectable reset delay, and 220 nA typical supply current. It monitors low-voltage rails in battery-powered microcontroller systems such as MSP430-based designs.

For engineers reviewing the TPS3837E18DBVTG4 datasheet, TPS3837E18DBVTG4 pinout, TPS3837E18DBVTG4 application, or TPS3837E18DBVTG4 equivalent, key selection criteria include its 1.71 V precision supervision, CT-pin configurable delay, manual reset input, SOT-23-5 package compatibility, and operation across –40°C to 85°C.

Technical Context

The TPS3837E18DBVTG4 implements a precision band-gap reference and comparator-based supervision architecture with hysteresis (V_HYS = 30 mV) to prevent chatter near threshold. Its internal timer initiates after V_DD exceeds V_IT + V_HYS, with delay timing controlled by the CT pin state (GND = 10 ms, V_DD = 200 ms).

It features an active-high push-pull RESET output requiring no external pull-up, manual reset (MR) with –200 µA low-level input current, and operates from 1.6 V to 6 V supply while maintaining nanoscale quiescent current (220 nA typ at V_DD < 3 V). The device is specified for industrial temperature range only.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.6 V to 6 V - supports single-cell Li-ion (3.6 V), coin-cell (1.8–3.0 V), and low-voltage MCU rails
Threshold Voltage (V_IT)	1.71 V (typ) - precisely supervises 1.8 V systems with ±30 mV hysteresis for noise immunity
Quiescent Current (I_DD)	220 nA (typ) - enables multi-year battery life in always-on monitoring applications
Reset Delay Options	10 ms (CT = GND) or 200 ms (CT = V_DD) - configurable without external components
RESET Output Type	Active-high push-pull - eliminates need for external pull-up resistor and ensures defined logic levels
Propagation Delay (t_PLH)	10 µs (typ) - fast response to rising V_DD or MR deassertion for timely system initialization
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded and portable equipment

Pinout & Package

TPS3837E18DBVTG4 uses the 5-pin SOT-23 (DBV) package: 2.90 mm × 1.60 mm, surface-mount, lead-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power Input	Monitored supply rail; device asserts RESET when voltage falls below 1.71 V
GND	Ground Reference	Analog and digital ground return; must be low-impedance for stable threshold accuracy
CT	Delay Configuration	Connect to GND for 10 ms delay or to VDD for 200 ms delay; no external capacitor required
MR	Manual Reset Input	Active-low logic input; forces RESET high when pulled low, independent of VDD condition
RESET	Active-High Output	Push-pull driver; outputs logic high during reset, logic low otherwise - no pull-up needed

Key Features

Feature	Design Value
Nano-power operation	220 nA typical I_DD enables >10-year battery life in coin-cell–powered IoT sensors
Precision 1.71 V threshold	±3% tolerance over temperature ensures reliable reset assertion for 1.8 V systems
Selectably timed reset delay	Hardware-configured 10 ms / 200 ms delay avoids firmware dependency or external RC timing
Active-high push-pull RESET	Eliminates external pull-up resistor and associated leakage, simplifying BOM and layout
Manual reset with internal pull-up	30 kΩ internal MR pull-up reduces component count; unused MR can be left floating or tied to VDD

Applications

Wearable Health Monitor	MSP430-Based Data Logger
Use Scenario: Continuous ECG sampling powered by CR2032 coin cell with undervoltage detection before data corruption. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to halt MCU execution when battery drops below 1.71 V. Use Value: Prevents invalid memory writes and firmware lockup using 220 nA quiescent current to extend battery runtime beyond 3 years.	Use Scenario: Remote environmental sensor logging temperature/humidity every 5 minutes using MSP430FR5969. IC Role / Device Role / Timing Role: Ensures clean power-on initialization and brownout recovery via 200 ms delay (CT = VDD) before releasing RESET. Use Value: Guarantees sufficient time for flash memory stabilization and clock settling before firmware execution begins.
Smart Meter Battery Backup	Industrial Wireless Node
Use Scenario: Lithium-thionyl chloride backup powering real-time clock and metering ASIC during main AC failure. IC Role / Device Role / Timing Role: Monitors 3.6 V Li-SOCl₂ cell and triggers system reset if voltage sags below 1.71 V due to load transients. Use Value: Maintains data integrity during power transitions using hysteresis (30 mV) to reject noise-induced false resets.	Use Scenario: LoRaWAN end-node operating on primary alkaline batteries in factory-floor wireless sensor network. IC Role / Device Role / Timing Role: Provides deterministic reset timing (10 ms delay) after cold start to synchronize RF transceiver initialization. Use Value: Enables rapid wake-from-sleep recovery with sub-millisecond propagation delay (10 µs t_PLH) for time-critical duty cycling.

Wearable Health Monitor

MSP430-Based Data Logger

Use Scenario: Continuous ECG sampling powered by CR2032 coin cell with undervoltage detection before data corruption.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to halt MCU execution when battery drops below 1.71 V.

Use Value: Prevents invalid memory writes and firmware lockup using 220 nA quiescent current to extend battery runtime beyond 3 years.

Use Scenario: Remote environmental sensor logging temperature/humidity every 5 minutes using MSP430FR5969.

IC Role / Device Role / Timing Role: Ensures clean power-on initialization and brownout recovery via 200 ms delay (CT = VDD) before releasing RESET.

Use Value: Guarantees sufficient time for flash memory stabilization and clock settling before firmware execution begins.

Smart Meter Battery Backup

Industrial Wireless Node

Use Scenario: Lithium-thionyl chloride backup powering real-time clock and metering ASIC during main AC failure.

IC Role / Device Role / Timing Role: Monitors 3.6 V Li-SOCl₂ cell and triggers system reset if voltage sags below 1.71 V due to load transients.

Use Value: Maintains data integrity during power transitions using hysteresis (30 mV) to reject noise-induced false resets.

Use Scenario: LoRaWAN end-node operating on primary alkaline batteries in factory-floor wireless sensor network.

IC Role / Device Role / Timing Role: Provides deterministic reset timing (10 ms delay) after cold start to synchronize RF transceiver initialization.

Use Value: Enables rapid wake-from-sleep recovery with sub-millisecond propagation delay (10 µs t_PLH) for time-critical duty cycling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3836E18DBVT	Active-low push-pull RESET output; identical V_IT (1.71 V), delay options, and quiescent current	Requires MCU reset input compatible with active-low assertion; no pull-up needed but polarity differs	Select when host processor accepts active-low reset signals and board layout already accommodates inverted logic
MAX6375XR29+T	Fixed 2.93 V threshold, 200 ms delay, 1.2 µA I_Q; SOT23-5 package; no CT pin configuration	Lacks delay configurability and nano-power efficiency; suited for higher-voltage 3.3 V systems only	Choose only if 2.93 V threshold matches system requirements and 1.2 µA I_Q is acceptable for battery life targets

Compared with TPS3837E18DBVTG4, TPS3836E18DBVT offers identical supervision accuracy and ultra-low power but requires active-low reset handling, while MAX6375XR29+T trades nanoscale current for fixed functionality and higher threshold - neither provides the same combination of 1.71 V precision, active-high output, and hardware-selectable delay.

Availability

TPS3837E18DBVTG4 is available at Aetrix Electronics and suitable for wearable health monitors, MSP430-based data loggers, and smart meter battery backup systems requiring stable component supply, long-term lifecycle support, and industrial-temperature qualification.

Supply support for TPS3837E18DBVTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in power management, signal chain, and microcontrollers.

The TPS383x family was designed specifically for ultra-low-power voltage supervision in battery-critical applications such as portable medical devices, energy-harvesting sensors, and long-life IoT endpoints.

FAQ

What is the exact reset threshold voltage of the TPS3837E18DBVTG4?

The TPS3837E18DBVTG4 has a nominal threshold voltage (V_IT) of 1.71 V, with guaranteed minimum 1.66 V and maximum 1.74 V across –40°C to +85°C. This value is factory-trimmed and applies specifically to the "E18" variant, enabling precise supervision of 1.8 V supply rails.

Does the TPS3837E18DBVTG4 require an external pull-up resistor on the RESET pin?

No, the TPS3837E18DBVTG4 features an active-high push-pull RESET output, so it drives both high and low states internally. Unlike open-drain supervisors, the TPS3837E18DBVTG4 does not require an external pull-up resistor - simplifying design and reducing BOM cost.

How is the reset delay time selected on the TPS3837E18DBVTG4?

The reset delay time on the TPS3837E18DBVTG4 is selected by the voltage applied to the CT pin: connecting CT to GND configures a 10 ms delay (typ), while connecting CT to VDD configures a 200 ms delay (typ). No external capacitor is needed - timing is fully internal and factory-characterized.

Can the TPS3837E18DBVTG4 monitor supplies below 1.8 V?

Yes - the TPS3837E18DBVTG4 operates down to 1.6 V supply voltage and reliably asserts RESET when VDD falls below its 1.71 V threshold. Its 220 nA quiescent current ensures functional supervision even as battery voltage decays toward end-of-life in 1.8 V systems.

What is the function of the MR pin on the TPS3837E18DBVTG4?

The MR (Manual Reset) pin on the TPS3837E18DBVTG4 is an active-low input that forces the RESET output high regardless of VDD level. When MR is pulled low, RESET goes high after 0.3 µs propagation delay; when MR is released (high), RESET returns low after the configured delay time if VDD remains above V_IT.

TPS3837E18DBVTG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 1.71V

Output:: Push-Pull, Totem Pole

Reset:: Active High

Reset Timeout:: 10ms Minimum

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TPS3837E18DBVTG4 FAQ

1.How can I place an order for TPS3837E18DBVTG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3837E18DBVTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS3837E18DBVTG4 reliable?

The price and inventory of TPS3837E18DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3837E18DBVTG4 is usually 5 days.

3.What payment methods are accepted for TPS3837E18DBVTG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3837E18DBVTG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3837E18DBVTG4?

TPS3837E18DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3837E18DBVTG4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS3837E18DBVTG4?

For technical support, including TPS3837E18DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3837E18DBVTG4 requirements.

6.How does Aetrix verify that TPS3837E18DBVTG4 is sourced from the original manufacturer or authorized distributors?

All TPS3837E18DBVTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS3837E18DBVTG4 meets industry standards.

7.What is the process for return or replacement of TPS3837E18DBVTG4?

All TPS3837E18DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3837E18DBVTG4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS3837E18DBVTG4 part is unused and in its original packaging.

Return procedure for TPS3837E18DBVTG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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