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

Texas Instruments TPS3836E18DBVTG4

Name: TPS3836E18DBVTG4
Brand: Texas Instruments
SKU: TPS3836E18DBVTG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3836E18DBVTG4

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3836E18DBVTG4.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

TPS3836E18DBVTG4 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 battery-backed microcontrollers and MSP430-based portable instrumentation.

For engineers reviewing the TPS3836E18DBVTG4 datasheet, TPS3836E18DBVTG4 pinout, TPS3836E18DBVTG4 application, or TPS3836E18DBVTG4 equivalent, this device delivers precision undervoltage supervision for 1.8 V systems with minimal quiescent current, manual reset capability, and SOT-23-5 packaging suitable for space-constrained PCB layouts.

Technical Context

The TPS3836E18DBVTG4 implements a precision bandgap reference and comparator to monitor VDD against a fixed 1.71 V threshold (±3% over –40°C to 85°C), with 30 mV hysteresis. Its internal timer initiates reset assertion when VDD falls below V_IT or MR is pulled low, and delays deassertion until VDD exceeds V_IT + V_HYS for the selected delay period (10 ms or 200 ms).

It features a push-pull output stage eliminating external pull-up requirements, manual reset input with internal 30 kΩ pull-up, and operates across 1.6 V–6 V supply range. The CT pin selects delay time by connection to GND (10 ms) or VDD (200 ms), and propagation delay from VDD or MR to RESET is ≤10 µs.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.6 V to 6 V - supports direct monitoring of 1.8 V logic rails and higher-voltage battery inputs without regulation.
Threshold Voltage (V_IT)	1.71 V (typical), ±3% - precisely matches 1.8 V system supply tolerance for reliable power-on reset initiation.
Reset Delay Options	10 ms (CT = GND) or 200 ms (CT = VDD) - configurable timing ensures stable MCU boot after brownout recovery.
Supply Current (I_DD)	220 nA (typical) at VDD > V_IT, VDD < 3 V - enables multi-year operation on coin-cell or lithium primary batteries.
Output Type	Active-low push-pull - drives RESET low without external components; compatible with standard CMOS reset inputs.
Operating Temperature	–40°C to +85°C - qualified for industrial and extended-temperature embedded applications.
Propagation Delay (t_PHL)	≤10 µs - ensures fast fault response during supply transients while maintaining noise immunity.

Pinout & Package

TPS3836E18DBVTG4 is housed in a 5-pin SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not connected. Pin 1 is VDD; pin 2 is GND; pin 3 is CT; pin 4 is MR; pin 5 is RESET. All pins are surface-mount compatible with standard reflow profiles (MSL Level-1).

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power Input	Monitored supply rail input; device draws current only from this pin; absolute max 7 V.
GND	Ground Reference	Analog and digital ground return; must be low-impedance path to minimize noise coupling into threshold detection.
CT	Delay Configuration	Selects reset timeout: grounded → 10 ms; tied to VDD → 200 ms; high-impedance state not allowed.
MR	Manual Reset Input	Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ); float or tie to VDD if unused.
RESET	Supervisor Output	Active-low push-pull output; sinks current when asserted; no external pull-up required; logic-compatible with 1.8 V–6 V systems.

Key Features

Feature	Design Value
Nano-power operation	220 nA typical I_DD enables >10-year battery life in always-on sensor nodes and wearable devices.
Precision 1.71 V threshold	±3% tolerance over full temperature range ensures consistent reset behavior across environmental conditions.
Selectably timed reset delay	Hardware-configurable 10 ms / 200 ms delay eliminates need for external RC timing networks or firmware delays.
Push-pull active-low RESET	Eliminates external pull-up resistor, reducing BOM count and board area in compact designs.
Manual reset support	Dedicated MR pin with internal pull-up allows system-level reset initiation without additional logic or switches.

Applications

Portable Medical Sensors	Lithium-Ion Battery Monitoring
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring undervoltage lockout before data corruption occurs. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to MSP430FR2355 when battery drops below 1.71 V, holding reset for 200 ms after recovery. Use Value: Prevents firmware execution under marginal supply, avoiding flash write errors and sensor calibration drift.	Use Scenario: Smart battery pack with fuel gauge IC and protection circuitry, needing precise 1.8 V rail supervision. IC Role / Device Role / Timing Role: Monitors backup LDO output feeding real-time clock; asserts RESET on 1.71 V threshold breach with 10 ms delay. Use Value: Guarantees RTC integrity during main power loss while minimizing quiescent drain on backup cell.
Industrial Wireless Transceivers	Low-Power IoT Edge Nodes
Use Scenario: Sub-GHz RF module (e.g., CC1312R) operating in duty-cycled sleep mode with intermittent wake-ups. IC Role / Device Role / Timing Role: Supervises 1.8 V digital core rail; uses CT = GND for 10 ms delay to synchronize with fast wake-up sequences. Use Value: Ensures clean processor initialization after wake-up without adding latency to critical sensor-read cycles.	Use Scenario: Environmental sensor node using Si7021 and nRF52840, powered by energy harvesting circuit with variable output. IC Role / Device Role / Timing Role: Provides brownout detection on harvested 1.8 V rail; MR pin tied to microcontroller GPIO for controlled reset sequencing. Use Value: Enables deterministic system recovery after energy storage depletion, preventing undefined MCU states.

Portable Medical Sensors

Lithium-Ion Battery Monitoring

Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring undervoltage lockout before data corruption occurs.

IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to MSP430FR2355 when battery drops below 1.71 V, holding reset for 200 ms after recovery.

Use Value: Prevents firmware execution under marginal supply, avoiding flash write errors and sensor calibration drift.

Use Scenario: Smart battery pack with fuel gauge IC and protection circuitry, needing precise 1.8 V rail supervision.

IC Role / Device Role / Timing Role: Monitors backup LDO output feeding real-time clock; asserts RESET on 1.71 V threshold breach with 10 ms delay.

Use Value: Guarantees RTC integrity during main power loss while minimizing quiescent drain on backup cell.

Industrial Wireless Transceivers

Low-Power IoT Edge Nodes

Use Scenario: Sub-GHz RF module (e.g., CC1312R) operating in duty-cycled sleep mode with intermittent wake-ups.

IC Role / Device Role / Timing Role: Supervises 1.8 V digital core rail; uses CT = GND for 10 ms delay to synchronize with fast wake-up sequences.

Use Value: Ensures clean processor initialization after wake-up without adding latency to critical sensor-read cycles.

Use Scenario: Environmental sensor node using Si7021 and nRF52840, powered by energy harvesting circuit with variable output.

IC Role / Device Role / Timing Role: Provides brownout detection on harvested 1.8 V rail; MR pin tied to microcontroller GPIO for controlled reset sequencing.

Use Value: Enables deterministic system recovery after energy storage depletion, preventing undefined MCU states.

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 threshold (2.93 V V_IT), same SOT-23-5 package and push-pull output.	Designed for 3.3 V systems; unsuitable for 1.8 V rail supervision due to higher trip point.	Select only when supervising ≥3.0 V supplies; incompatible for 1.8 V use cases like MSP430 LPM modes.
MAX6315US17D3+T	1.7 V threshold (±2.5%), 200 ms fixed delay, open-drain output, 1.6 µA I_DD.	Higher quiescent current limits battery lifetime; open-drain requires external pull-up; no CT pin flexibility.	Use where cost sensitivity outweighs power budget constraints; avoid in sub-µA always-on designs.

Compared with TPS3836K33DBVT and MAX6315US17D3+T, the TPS3836E18DBVTG4 uniquely combines 1.71 V precision threshold, 220 nA supply current, and hardware-selectable delay in a 5-pin SOT-23 - making it optimal for long-life 1.8 V microcontroller supervision where both accuracy and ultra-low power are mandatory.

Availability

TPS3836E18DBVTG4 is available at Aetrix Electronics and suitable for portable medical sensors, lithium-ion battery monitoring, industrial wireless transceivers, and low-power IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS3836E18DBVTG4 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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and microcontroller solutions.

The TPS3836 family is part of TI's nano-power supervisor portfolio, designed specifically for battery-powered and energy-harvesting applications where sub-microamp quiescent current and precise voltage thresholds are critical to system reliability.

FAQ

What is the exact threshold voltage of TPS3836E18DBVTG4 and how tightly is it specified?

The TPS3836E18DBVTG4 has a nominal threshold voltage (V_IT) of 1.71 V, with a guaranteed tolerance of ±3% over the full operating temperature range (–40°C to +85°C). This specification is confirmed in the Electrical Characteristics table of the official datasheet (SLVS292F), ensuring reliable reset activation at 1.66 V minimum and 1.74 V maximum under worst-case conditions.

Does TPS3836E18DBVTG4 require an external pull-up resistor on the RESET pin?

No, TPS3836E18DBVTG4 does not require an external pull-up resistor because it features an active-low push-pull RESET output. The internal driver actively pulls the pin low during reset assertion and high during deassertion, eliminating the need for external components and simplifying layout for 1.8 V systems.

How is the reset delay time configured on TPS3836E18DBVTG4?

The reset delay time on TPS3836E18DBVTG4 is configured via the CT pin: connecting CT to GND selects a typical 10 ms delay, while connecting CT to VDD selects a typical 200 ms delay. The datasheet specifies these values as 5–15 ms and 100–300 ms respectively, with no intermediate settings supported.

Can TPS3836E18DBVTG4 operate from a 1.6 V supply?

Yes, TPS3836E18DBVTG4 is fully specified to operate from 1.6 V to 6 V per Recommended Operating Conditions. At 1.6 V, it maintains valid reset functionality with V_IT = 1.71 V - meaning the device will assert RESET until VDD rises above 1.71 V, ensuring robust power-on sequencing even near its lower supply limit.

What is the maximum supply voltage rating for TPS3836E18DBVTG4?

The absolute maximum supply voltage (VDD) for TPS3836E18DBVTG4 is 7 V, as stated in Section 7.1 Absolute Maximum Ratings of the datasheet. Operation above 6 V is outside Recommended Operating Conditions and may compromise reliability or parametric performance, though short transients up to 7 V are tolerated.

TPS3836E18DBVTG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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

TPS3836E18DBVTG4 FAQ

1.How can I place an order for TPS3836E18DBVTG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3836E18DBVTG4 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 TPS3836E18DBVTG4 reliable?

The price and inventory of TPS3836E18DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836E18DBVTG4 is usually 5 days.

3.What payment methods are accepted for TPS3836E18DBVTG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3836E18DBVTG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3836E18DBVTG4?

TPS3836E18DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3836E18DBVTG4 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 TPS3836E18DBVTG4?

For technical support, including TPS3836E18DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836E18DBVTG4 requirements.

6.How does Aetrix verify that TPS3836E18DBVTG4 is sourced from the original manufacturer or authorized distributors?

All TPS3836E18DBVTG4 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 TPS3836E18DBVTG4 meets industry standards.

7.What is the process for return or replacement of TPS3836E18DBVTG4?

All TPS3836E18DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836E18DBVTG4, 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 TPS3836E18DBVTG4 part is unused and in its original packaging.

Return procedure for TPS3836E18DBVTG4:

1.Submit a request within 90 days.

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

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