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

Texas Instruments TPS3836E18DBVT

Name: TPS3836E18DBVT
Brand: Texas Instruments
SKU: TPS3836E18DBVT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3836E18DBVT

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3836E18DBVT.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

TPS3836E18DBVT from Texas Instruments is a nano-power voltage supervisor IC with active-low push-pull RESET output, 1.71 V threshold voltage (V_IT), 10 ms / 200 ms selectable reset delay via CT pin, and 220 nA typical supply current. It monitors supply rails in ultra-low-power systems such as lithium battery–powered microcontrollers and MSP430-based instrumentation.

For engineers reviewing the TPS3836E18DBVT datasheet, TPS3836E18DBVT pinout, TPS3836E18DBVT application, or TPS3836E18DBVT equivalent, key selection criteria include precise 1.71 V undervoltage detection, SOT-23-5 package compatibility, manual reset support, and guaranteed operation from –40°C to 85°C across 1.6 V to 6 V supply range.

Technical Context

The TPS3836E18DBVT implements a precision bandgap-referenced comparator with 30 mV hysteresis (V_HYS) to reject noise-induced false resets. Its internal timer initiates after V_DD exceeds V_IT + V_HYS, enabling clean system initialization only when supply is stable.

Reset assertion occurs on either V_DD falling below 1.71 V or MR pulled low; deassertion requires both V_DD > 1.74 V and MR high for ≥10 ms (CT = GND) or ≥200 ms (CT = V_DD). Propagation delay t_PHL is 10 µs typical from V_DD or MR to RESET transition.

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 V), and multi-rail embedded systems.
Threshold Voltage (V_IT)	1.71 V (typical), ±3% over temperature - enables reliable 1.8 V rail supervision with margin against brownout.
Supply Current (I_DD)	220 nA (typical) at V_DD < 3 V - extends battery life in always-on sensor nodes and wearables.
Reset Delay Options	10 ms (CT = GND) or 200 ms (CT = V_DD) - configurable timing for MCU boot stabilization or power-rail settling.
Output Type	Active-low push-pull RESET - eliminates external pull-up resistor, reduces BOM count and board space.
Hysteresis (V_HYS)	30 mV - prevents oscillation during slow-rising or noisy supply transitions near threshold.
Operating Temperature	–40°C to +85°C - qualified for industrial and portable consumer environments without derating.

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm, surface-mount, lead-free (NiPdAu), moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power input and monitored supply rail	Supplies internal circuitry and serves as the voltage source under supervision; must be decoupled with 0.1 µF ceramic capacitor.
GND	Reference ground	Common return path for all internal functions; requires low-impedance connection to system ground plane.
CT	Delay configuration control	Connect to GND for 10 ms delay or to VDD for 200 ms delay; high-impedance input draws <25 nA.
MR	Manual reset input	Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ); tie to VDD if unused to minimize leakage.
RESET	Active-low push-pull output	Drives logic-low during fault (VDD < VIT or MR low); actively drives high when inactive - no external pull-up required.

Key Features

Feature	Design Value
Nano-power operation	220 nA typical supply current enables multi-year battery life in energy-constrained IoT endpoints.
Precision 1.71 V threshold	±3% tolerance over temperature ensures consistent 1.8 V rail monitoring without calibration.
Selectably timed reset	Dual delay options (10 ms / 200 ms) allow matching MCU boot time or power-supply ramp requirements.
Push-pull RESET output	Eliminates need for external pull-up resistor, reducing component count and PCB area in space-sensitive designs.
Manual reset support	Asynchronous MR pin enables system-level reset initiation independent of supply voltage condition.

Applications

Lithium-Ion Battery Monitoring	MSP430-Based Sensor Node
Use Scenario: Monitors 3.6 V Li-ion battery voltage during discharge to prevent MCU operation below safe operating voltage. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET when battery drops below 1.71 V, with 200 ms delay to avoid false triggers during transient load spikes. Use Value: Prevents data corruption and flash write errors in battery-powered devices by enforcing clean reset before undervoltage lockout.	Use Scenario: Provides power-on and brownout reset for MSP430FR2355 in a wireless environmental sensor with 10-year battery target. IC Role / Device Role / Timing Role: Nano-power supervisor ensuring reliable initialization and fault recovery while consuming <1 µA average current. Use Value: Enables ultra-low-quiescent design without sacrificing reset integrity - critical for energy-harvesting and long-life deployments.
Portable Medical Instrument	Industrial Data Logger
Use Scenario: Supervises dual 1.8 V rails powering analog front-end and BLE radio in handheld diagnostic tool. IC Role / Device Role / Timing Role: Dual-rail monitoring via separate TPS3836E18DBVT instances; 10 ms delay ensures ADC reference stabilizes before firmware execution. Use Value: Guarantees deterministic startup sequence and eliminates erratic behavior caused by marginal supply conditions.	Use Scenario: Resets microcontroller during AC/DC adapter brownouts in remote field logger powered from 12 V SMPS. IC Role / Device Role / Timing Role: Supervises 3.3 V LDO output; MR tied to watchdog timer output for fail-safe recovery from firmware hangs. Use Value: Combines supply monitoring and software-triggered reset in one compact device, simplifying safety-critical fault handling.

Lithium-Ion Battery Monitoring

MSP430-Based Sensor Node

Use Scenario: Monitors 3.6 V Li-ion battery voltage during discharge to prevent MCU operation below safe operating voltage.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET when battery drops below 1.71 V, with 200 ms delay to avoid false triggers during transient load spikes.

Use Value: Prevents data corruption and flash write errors in battery-powered devices by enforcing clean reset before undervoltage lockout.

Use Scenario: Provides power-on and brownout reset for MSP430FR2355 in a wireless environmental sensor with 10-year battery target.

IC Role / Device Role / Timing Role: Nano-power supervisor ensuring reliable initialization and fault recovery while consuming <1 µA average current.

Use Value: Enables ultra-low-quiescent design without sacrificing reset integrity - critical for energy-harvesting and long-life deployments.

Portable Medical Instrument

Industrial Data Logger

Use Scenario: Supervises dual 1.8 V rails powering analog front-end and BLE radio in handheld diagnostic tool.

IC Role / Device Role / Timing Role: Dual-rail monitoring via separate TPS3836E18DBVT instances; 10 ms delay ensures ADC reference stabilizes before firmware execution.

Use Value: Guarantees deterministic startup sequence and eliminates erratic behavior caused by marginal supply conditions.

Use Scenario: Resets microcontroller during AC/DC adapter brownouts in remote field logger powered from 12 V SMPS.

IC Role / Device Role / Timing Role: Supervises 3.3 V LDO output; MR tied to watchdog timer output for fail-safe recovery from firmware hangs.

Use Value: Combines supply monitoring and software-triggered reset in one compact device, simplifying safety-critical fault handling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3836K33DBVT	3.3 V nominal supply; 2.93 V threshold voltage; identical SOT-23-5 package and pinout.	Designed for 3.3 V systems (e.g., MSP430 with 3.3 V I/O), not 1.8 V rails.	Select when supervising 3.3 V supplies - same footprint and timing but different V_IT.
MAX6326UT29D3+	2.93 V threshold; 1.6 µA quiescent current; SC70-5 package; no CT pin - fixed 200 ms delay.	Higher supply current limits battery lifetime; smaller SC70 footprint may require layout revision.	Use where higher I_Q is acceptable and fixed delay suffices; not drop-in due to different package and no CT flexibility.

Compared with TPS3836K33DBVT, the TPS3836E18DBVT provides lower threshold for 1.8 V systems; compared with MAX6326UT29D3+, it delivers 7× lower quiescent current and programmable delay - critical for energy-sensitive designs requiring layout reuse.

Availability

TPS3836E18DBVT is available at Aetrix Electronics and suitable for lithium battery management, MSP430-based sensor nodes, and portable medical instrumentation requiring stable component supply across extended production cycles.

Supply support for TPS3836E18DBVT 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 low-power design and precision analog IP.

The TPS3836 family is designed for ultra-low-power voltage supervision in battery-operated and energy-constrained systems, emphasizing nanoscale quiescent current and accurate threshold stability over temperature.

FAQ

What is the exact threshold voltage of the TPS3836E18DBVT?

The TPS3836E18DBVT 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 specified in the Electrical Characteristics table of the SLVS292F datasheet.

Does the TPS3836E18DBVT require an external pull-up resistor on the RESET pin?

No, the TPS3836E18DBVT features an active-low push-pull RESET output and does not require an external pull-up resistor. This distinguishes it from open-drain variants like the TPS3838 and reduces BOM count and board area in compact designs.

How is the reset delay time selected on the TPS3836E18DBVT?

The reset delay time on the TPS3836E18DBVT is selected using the CT pin: connect CT to GND for a typical 10 ms delay, or connect CT to VDD for a typical 200 ms delay. The CT pin draws less than 25 nA, making it compatible with high-impedance configurations.

Can the TPS3836E18DBVT supervise a 1.8 V supply rail?

Yes, the TPS3836E18DBVT is specifically designed for 1.8 V systems, with a 1.71 V threshold voltage and guaranteed operation down to 1.6 V supply. Its 220 nA typical supply current ensures minimal loading on low-voltage rails.

What package type does the TPS3836E18DBVT use, and what are its dimensions?

The TPS3836E18DBVT uses the SOT-23-5 (DBV) package, measuring 2.90 mm × 1.60 mm with 0.95 mm height. It is RoHS-compliant, lead-free (NiPdAu finish), and rated MSL-1 for reflow soldering at 260°C peak.

TPS3836E18DBVT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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 Low

Reset Timeout:: 10ms Minimum

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TPS3836E18DBVT FAQ

1.How can I place an order for TPS3836E18DBVT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3836E18DBVT 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 TPS3836E18DBVT reliable?

The price and inventory of TPS3836E18DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836E18DBVT is usually 5 days.

3.What payment methods are accepted for TPS3836E18DBVT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3836E18DBVT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3836E18DBVT?

TPS3836E18DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3836E18DBVT 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 TPS3836E18DBVT?

For technical support, including TPS3836E18DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836E18DBVT requirements.

6.How does Aetrix verify that TPS3836E18DBVT is sourced from the original manufacturer or authorized distributors?

All TPS3836E18DBVT 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 TPS3836E18DBVT meets industry standards.

7.What is the process for return or replacement of TPS3836E18DBVT?

All TPS3836E18DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836E18DBVT, 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 TPS3836E18DBVT part is unused and in its original packaging.

Return procedure for TPS3836E18DBVT:

1.Submit a request within 90 days.

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

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