Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Texas Instruments TPS3837E18DBVT

Name: TPS3837E18DBVT
Brand: Texas Instruments
SKU: TPS3837E18DBVT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TPS3837E18DBVT

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3837E18DBVT.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:258

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TPS3837E18DBVT from Texas Instruments is a nano-power voltage supervisor IC with active-high push-pull RESET output, 1.71 V threshold voltage (V_IT), 220 nA typical supply current, and selectable 10 ms or 200 ms reset delay via CT pin-designed for undervoltage monitoring in ultra-low-power MSP430-based systems powered by lithium coin cells.

For engineers reviewing the TPS3837E18DBVT datasheet, TPS3837E18DBVT pinout, TPS3837E18DBVT application, or TPS3837E18DBVT equivalent, this page delivers verified functional identity, precise SOT-23-5 pin mapping, confirmed 1.71 V supervision threshold, true 220 nA quiescent current, and validated alternatives for battery-backed microcontroller reset management.

Technical Context

The TPS3837E18DBVT implements a precision bandgap-referenced comparator to monitor VDD against a fixed 1.71 V threshold with 30 mV hysteresis, enabling reliable power-on and brownout detection. Its internal timer initiates delay timing only after VDD exceeds V_IT + V_HYS, ensuring clean system initialization.

Reset assertion occurs on VDD drop below 1.71 V or MR low activation, with propagation delays of ≤10 µs (t_PLH) and ≤0.3 µs (MR-to-RESET). The CT pin selects delay mode: GND = 10 ms, VDD = 200 ms-no external capacitor required.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.6 V to 6 V - supports single-cell Li-ion, LiFePO₄, and multi-cell alkaline/battery systems without external regulation.
Threshold Voltage (V_IT)	1.71 V (typical) - precisely matches 1.8 V rail supervision with ±30 mV hysteresis to prevent chatter during slow-rising/falling supplies.
Quiescent Current (I_DD)	220 nA (typical) at VDD < 3 V - enables >10-year battery life in always-on coin-cell applications (e.g., RTC backup, sensor nodes).
Reset Delay Options	10 ms (CT = GND) or 200 ms (CT = VDD) - factory-programmed timing eliminates need for external RC networks and layout sensitivity.
Output Type	Active-high push-pull RESET - drives high/low directly without pull-up resistor, reducing BOM count and leakage path uncertainty.
Operating Temperature	–40°C to +85°C - qualified for industrial and extended-temperature portable equipment including handheld meters and wearables.
ESD Rating	4000 V HBM - robust enough for manual handling and board-level assembly without special ESD controls beyond standard practices.

Pinout & Package

TPS3837E18DBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable electronics.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power input and monitored supply rail	Primary voltage source; device asserts RESET when VDD falls below 1.71 V or rises above it with hysteresis and delay.
GND	Reference ground	Return path for all internal circuitry; must be low-impedance and adjacent to 0.1 µF ceramic bypass capacitor.
CT	Delay configuration control	Connect to GND for 10 ms delay or to VDD for 200 ms delay-no external components needed; defines reset timeout duration.
MR	Manual reset input (active-low)	Pull low to force immediate RESET assertion; tie to VDD if unused to minimize leakage current (30 kΩ internal pullup).
RESET	Active-high push-pull output	Drives high (≈VDD) when inactive, low (≈0 V) when asserted-directly interfaces with MCU reset pins without external pull-up.

Key Features

Feature	Design Value
Nano-power operation	220 nA typical I_DD enables multi-year operation on CR2032 coin cells in always-on monitoring applications.
Fixed 1.71 V threshold	Matches 1.8 V logic rails with guaranteed accuracy over –40°C to +85°C, eliminating need for external trimming or calibration.
Selectably timed reset delay	Hardware-configured 10 ms / 200 ms delay via CT pin-avoids timing drift, temperature dependence, and component tolerance issues of RC solutions.
Push-pull active-high RESET	Eliminates external pull-up resistor, reduces standby leakage, and ensures deterministic logic levels across full VDD range (1.6–6 V).
Integrated manual reset	MR pin provides system-level reset initiation independent of supply voltage, with internal 30 kΩ pullup for default high state.

Applications

Portable Medical Sensors	Lithium Coin-Cell IoT Nodes
Use Scenario: Continuous glucose monitor logging data to flash memory during intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 1.8 V LDO output powering MSP430FR5969; asserts RESET if battery drops below 2.0 V under load. Use Value: Prevents corrupted flash writes by holding MCU in reset until stable 1.8 V rail is restored for ≥200 ms-guaranteed by CT = VDD configuration.	Use Scenario: Environmental sensor node powered by CR2032, waking every 5 minutes to measure temperature/humidity. IC Role / Device Role / Timing Role: Monitors coin-cell voltage pre-regulator; triggers hard reset before brownout causes RAM corruption or clock instability. Use Value: 220 nA I_DD extends usable battery life to >7 years; 1.71 V threshold aligns with end-of-life voltage for CR2032 (2.0 V open-circuit ≈ 1.75 V under load).
Industrial Handheld Meters	Low-Power RTOS Edge Controllers
Use Scenario: Battery-powered multimeter with auto-ranging ADC and LCD display requiring clean power sequencing. IC Role / Device Role / Timing Role: Generates power-on reset pulse synchronized to 1.8 V digital core rail; debounces supply ramp with 10 ms delay (CT = GND). Use Value: Ensures ADC reference and digital logic initialize simultaneously-eliminates metastability during first instruction fetch after power-up.	Use Scenario: Zephyr RTOS-based controller managing BLE beaconing and GPIO-triggered event logging. IC Role / Device Role / Timing Role: Provides fail-safe reset during deep-sleep exit; MR pin accepts mechanical switch press to force firmware recovery without cycling power. Use Value: Internal 30 kΩ MR pullup prevents floating input; active-high RESET directly satisfies Zephyr's active-high reset requirement without level-shifting.

Portable Medical Sensors

Lithium Coin-Cell IoT Nodes

Use Scenario: Continuous glucose monitor logging data to flash memory during intermittent BLE transmission.

IC Role / Device Role / Timing Role: Supervises 1.8 V LDO output powering MSP430FR5969; asserts RESET if battery drops below 2.0 V under load.

Use Value: Prevents corrupted flash writes by holding MCU in reset until stable 1.8 V rail is restored for ≥200 ms-guaranteed by CT = VDD configuration.

Use Scenario: Environmental sensor node powered by CR2032, waking every 5 minutes to measure temperature/humidity.

IC Role / Device Role / Timing Role: Monitors coin-cell voltage pre-regulator; triggers hard reset before brownout causes RAM corruption or clock instability.

Use Value: 220 nA I_DD extends usable battery life to >7 years; 1.71 V threshold aligns with end-of-life voltage for CR2032 (2.0 V open-circuit ≈ 1.75 V under load).

Industrial Handheld Meters

Low-Power RTOS Edge Controllers

Use Scenario: Battery-powered multimeter with auto-ranging ADC and LCD display requiring clean power sequencing.

IC Role / Device Role / Timing Role: Generates power-on reset pulse synchronized to 1.8 V digital core rail; debounces supply ramp with 10 ms delay (CT = GND).

Use Value: Ensures ADC reference and digital logic initialize simultaneously-eliminates metastability during first instruction fetch after power-up.

Use Scenario: Zephyr RTOS-based controller managing BLE beaconing and GPIO-triggered event logging.

IC Role / Device Role / Timing Role: Provides fail-safe reset during deep-sleep exit; MR pin accepts mechanical switch press to force firmware recovery without cycling power.

Use Value: Internal 30 kΩ MR pullup prevents floating input; active-high RESET directly satisfies Zephyr's active-high reset requirement without level-shifting.

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, I_DD, delay options, and pinout.	Requires MCU reset pin compatible with active-low assertion; no pull-up needed but incompatible with active-high reset inputs.	Select when interfacing with MCUs specifying active-low reset (e.g., most ARM Cortex-M series).
MAX6315US18D3+T	1.78 V threshold, 1.2 µA I_DD, fixed 200 ms delay, SOT-23-5, active-low open-drain output.	Higher quiescent current limits battery life; open-drain requires external pull-up; different threshold shifts trip point by +70 mV.	Choose only if legacy MAXIM design reuse is required; not recommended for new ultra-low-power designs.

Compared with TPS3837E18DBVT, TPS3836E18DBVT offers identical supervision accuracy and power efficiency but inverted logic polarity-making it suitable for active-low reset architectures. The MAX6315US18D3+T trades nano-power operation for broader vendor support but sacrifices >5× quiescent current and lacks configurable delay.

Availability

TPS3837E18DBVT is available at Aetrix Electronics and suitable for portable medical sensors, lithium coin-cell IoT nodes, industrial handheld meters, and low-power RTOS edge controllers requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS3837E18DBVT 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 signal chain and power management technologies.

The TPS383x family was designed specifically for ultra-low-power microcontroller supervision in battery-critical applications-emphasizing nano-amp quiescent current, factory-trimmed thresholds, and hardware-selectable timing without external components.

FAQ

What is the exact reset threshold voltage of the TPS3837E18DBVT?

The TPS3837E18DBVT 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, matching 1.8 V supply rails with appropriate hysteresis margin.

Does the TPS3837E18DBVT require an external pull-up resistor on the RESET pin?

No, the TPS3837E18DBVT features an active-high push-pull RESET output and does not require an external pull-up resistor. It actively drives high (≈VDD) when inactive and low (≈0 V) when asserted-unlike open-drain variants such as the TPS3838 series.

How is the reset delay time selected on the TPS3837E18DBVT?

The reset delay time on the TPS3837E18DBVT is selected by the CT pin: connect CT to GND for a typical 10 ms delay, or to VDD for a typical 200 ms delay. No external capacitor is needed-the timing is internally generated and factory-characterized.

What is the maximum supply voltage the TPS3837E18DBVT can tolerate?

The TPS3837E18DBVT has an absolute maximum VDD rating of 7 V. However, its recommended operating range is 1.6 V to 6 V. Exceeding 7 V-even transiently-may cause permanent damage, so clamping or filtering is advised in noisy supply environments.

Can the TPS3837E18DBVT be used with a 3.3 V microcontroller reset input?

Yes, the TPS3837E18DBVT's active-high RESET output swings from near 0 V (low) to within 100 mV of VDD (high) across its full 1.6–6 V supply range. At VDD = 3.3 V, it delivers >3.2 V high-level output-fully compatible with standard 3.3 V CMOS reset inputs.

TPS3837E18DBVT 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 High

Reset Timeout:: 10ms Minimum

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TPS3837E18DBVT FAQ

1.How can I place an order for TPS3837E18DBVT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3837E18DBVT 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 TPS3837E18DBVT reliable?

The price and inventory of TPS3837E18DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3837E18DBVT is usually 5 days.

3.What payment methods are accepted for TPS3837E18DBVT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3837E18DBVT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3837E18DBVT?

TPS3837E18DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3837E18DBVT 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 TPS3837E18DBVT?

For technical support, including TPS3837E18DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3837E18DBVT requirements.

6.How does Aetrix verify that TPS3837E18DBVT is sourced from the original manufacturer or authorized distributors?

All TPS3837E18DBVT 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 TPS3837E18DBVT meets industry standards.

7.What is the process for return or replacement of TPS3837E18DBVT?

All TPS3837E18DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3837E18DBVT, 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 TPS3837E18DBVT part is unused and in its original packaging.

Return procedure for TPS3837E18DBVT:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…