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 TPS3836K33DBVR

Name: TPS3836K33DBVR
Brand: Texas Instruments
SKU: TPS3836K33DBVR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TPS3836K33DBVR

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3836K33DBVR.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:11,606

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

Product details

Overview

TPS3836K33 from Texas Instruments is a nano-power voltage supervisor IC designed for undervoltage monitoring and system reset generation in battery-powered microcontroller systems. It features a 2.93 V threshold voltage (V_IT), 220 nA typical supply current, push-pull active-low RESET output, and selectable 10 ms or 200 ms reset delay via the CT pin. It operates across –40°C to 85°C and is used in lithium-ion battery-backed MSP430-based applications requiring ultra-low quiescent current.

For engineers reviewing the TPS3836K33 datasheet, TPS3836K33 pinout, TPS3836K33 application, or TPS3836K33 equivalent, this page delivers verified technical context, precise pin functions, real-world timing behavior, confirmed alternative options, and supply-chain support details specific to the DBVR SOT-23-5 variant.

Technical Context

The TPS3836K33 implements a precision bandgap-referenced comparator with hysteresis (V_HYS = 40 mV) to monitor VDD against a fixed 2.93 V threshold. Its internal refresh timer initiates a reset delay (t_D) after VDD rises above V_IT + V_HYS, with delay selection determined by CT pin voltage: GND → 10 ms, VDD → 200 ms.

It integrates manual reset (MR) with sub-μA input leakage and supports immediate reset assertion on MR low, independent of VDD state. The push-pull RESET output drives actively high/low without external pull-up, enabling direct interface with MSP430 reset inputs while maintaining <450 nA max IDD during supervision.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.6 V to 6 V - supports direct connection to Li-ion (3.6 V nominal) and wide-input industrial rails.
Threshold Voltage (V_IT)	2.93 V (typical) - precisely matches 3.3 V system supply monitoring with 70 mV hysteresis margin.
Quiescent Current (I_DD)	220 nA (typical) - enables multi-year operation on coin-cell or small Li-ion batteries without measurable drain.
Reset Delay Options	10 ms or 200 ms - selected by CT pin logic level; eliminates need for external RC timing components.
Output Type	Active-low push-pull - provides rail-to-rail RESET signal without external pull-up resistor or I/O configuration.
Propagation Delay (t_PHL)	10 μs (max) - ensures fast response to brownout events before MCU state corruption occurs.
Operating Temperature	–40°C to 85°C - qualified for industrial and portable equipment environments without derating.

Pinout & Package

TPS3836K33 is packaged in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in handheld and sensor nodes.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power Input / Monitoring Node	Primary supply voltage input; internally monitored against 2.93 V threshold; requires 0.1 µF bypass capacitor.
GND	Reference Ground	Analog and digital ground reference; must be low-impedance connection to minimize noise-induced false resets.
CT	Delay Configuration Control	Logic-level input: tied to GND for 10 ms delay, tied to VDD for 200 ms delay; no external capacitor required.
MR	Manual Reset Input	Active-low asynchronous reset trigger; internal 30 kΩ pull-up allows direct MCU GPIO connection without external resistor.
RESET	Supervisor Output	Active-low push-pull output; drives low during fault (VDD < 2.93 V or MR low), high otherwise; no external pull-up needed.

Key Features

Feature	Design Value
Nano-power operation	220 nA typical supply current enables >10-year battery life in always-on monitoring applications.
Fixed 2.93 V threshold	Matches 3.3 V system rails with ±1.5% accuracy over temperature; eliminates need for external resistive divider.
Selectably timed reset delay	Hardware-configurable 10 ms / 200 ms delay avoids firmware timing dependencies and reduces BOM count.
Push-pull RESET output	Eliminates external pull-up resistor and associated leakage path, simplifying layout and improving noise immunity.
Integrated manual reset	MR pin includes internal 30 kΩ pull-up; supports direct connection to open-drain or CMOS GPIO without discrete components.

Applications

Lithium-Ion Battery Supervision	MSP430 Microcontroller Reset
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 VDD falls below 2.93 V, with 200 ms delay before release to avoid chatter near threshold. Use Value: Prevents data corruption and flash write errors in MSP430 by ensuring clean power-up and controlled brownout recovery.	Use Scenario: Provides reliable power-on and brownout reset to MSP430F2xx/F5xx series MCUs in portable instrumentation. IC Role / Device Role / Timing Role: Generates synchronized, glitch-free reset pulse with programmable hold time, directly compatible with MSP430's RST/NMI pin. Use Value: Eliminates need for discrete RC reset circuits or internal LPM4 wake-up timers, reducing design complexity and component count.
Low-Power Wireless Sensor Node	Industrial Data Logger
Use Scenario: Ensures deterministic startup and fault recovery in BLE/Wi-SUN sensor nodes powered by primary Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Nano-power supervisor maintaining <500 nA total system quiescent current while providing 10 ms reset delay for RF transceiver initialization. Use Value: Extends field deployment lifetime beyond 15 years by minimizing supervisory overhead in sleep-dominated duty cycles.	Use Scenario: Guards against undervoltage-induced memory corruption in SD-card-based data loggers operating from 3.3 V regulated supplies. IC Role / Device Role / Timing Role: Detects supply sag during high-current SD write bursts and asserts RESET until stable voltage resumes for ≥200 ms. Use Value: Prevents partial-sector writes and FAT32 table corruption by enforcing strict voltage hold-time before MCU resumption.

Lithium-Ion Battery Supervision

MSP430 Microcontroller Reset

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 VDD falls below 2.93 V, with 200 ms delay before release to avoid chatter near threshold.

Use Value: Prevents data corruption and flash write errors in MSP430 by ensuring clean power-up and controlled brownout recovery.

Use Scenario: Provides reliable power-on and brownout reset to MSP430F2xx/F5xx series MCUs in portable instrumentation.

IC Role / Device Role / Timing Role: Generates synchronized, glitch-free reset pulse with programmable hold time, directly compatible with MSP430's RST/NMI pin.

Use Value: Eliminates need for discrete RC reset circuits or internal LPM4 wake-up timers, reducing design complexity and component count.

Low-Power Wireless Sensor Node

Industrial Data Logger

Use Scenario: Ensures deterministic startup and fault recovery in BLE/Wi-SUN sensor nodes powered by primary Li-SOCl₂ cells.

IC Role / Device Role / Timing Role: Nano-power supervisor maintaining <500 nA total system quiescent current while providing 10 ms reset delay for RF transceiver initialization.

Use Value: Extends field deployment lifetime beyond 15 years by minimizing supervisory overhead in sleep-dominated duty cycles.

Use Scenario: Guards against undervoltage-induced memory corruption in SD-card-based data loggers operating from 3.3 V regulated supplies.

IC Role / Device Role / Timing Role: Detects supply sag during high-current SD write bursts and asserts RESET until stable voltage resumes for ≥200 ms.

Use Value: Prevents partial-sector writes and FAT32 table corruption by enforcing strict voltage hold-time before MCU resumption.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3836K33DBVT	Same silicon, identical electrical specs; differs only in tape-and-reel quantity (250 vs 3000 pcs) and packaging format.	No functional difference; suitable for prototyping or low-volume production where smaller reels reduce inventory cost.	Select DBVT for evaluation or pilot runs; DBVR preferred for high-volume manufacturing due to standard large reel size.
TPS3837K33DBVR	Same package and threshold, but features active-high push-pull RESET output instead of active-low.	Requires MCU reset pin configured for active-high assertion; incompatible with standard MSP430 active-low RST/NMI inputs without logic inversion.	Choose only if system architecture mandates active-high reset signaling; otherwise, TPS3836K33DBVR maintains direct compatibility.

Compared with TPS3836K33DBVR, the DBVT variant offers identical performance in a smaller reel for development use, while TPS3837K33DBVR changes reset polarity-requiring hardware or firmware adaptation to maintain system-level functionality.

Availability

TPS3836K33 is available at Aetrix Electronics and suitable for lithium-ion battery management, MSP430-based embedded control, and low-power wireless sensor applications requiring stable component supply, long-lifecycle assurance, and TI-qualified industrial-grade performance.

Supply support for TPS3836K33 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 microcontroller technologies.

The TPS3836K33 belongs to TI's nano-power voltage supervisor product line, engineered specifically for ultra-low-current reset generation in battery-critical applications such as portable medical devices, wearables, and remote sensors.

FAQ

What is the exact reset threshold voltage of the TPS3836K33?

The TPS3836K33 has a nominal threshold voltage (V_IT) of 2.93 V, with a guaranteed range of 2.84 V to 2.99 V across –40°C to 85°C. This value is factory-trimmed and fixed for the K33 variant, making it ideal for monitoring 3.3 V supply rails with appropriate hysteresis margin. The TPS3836K33 does not require external resistor networks to set its trip point.

Does the TPS3836K33 require an external pull-up resistor on the RESET pin?

No, the TPS3836K33 does not require an external pull-up resistor because it features an active-low push-pull RESET output. The output actively drives high when inactive and low when asserted, eliminating reliance on external components. This simplifies PCB layout and improves reliability compared to open-drain alternatives like the TPS3838K33, which do require a pull-up.

How is the reset delay time selected on the TPS3836K33?

The reset delay time on the TPS3836K33 is selected by the logic level applied to the CT pin: connecting CT to GND configures a 10 ms delay, while connecting CT to VDD selects a 200 ms delay. No external capacitor is needed-the timing is fully internal and factory-characterized. This hardware-selectable feature avoids firmware dependencies and ensures deterministic timing in the TPS3836K33.

Can the TPS3836K33 operate from a 1.8 V supply?

No, the TPS3836K33 is not rated for 1.8 V operation. Its specified threshold is 2.93 V, and its recommended operating supply range is 1.6 V to 6 V-but functional supervision requires VDD ≥ V_IT. For 1.8 V systems, TI recommends the TPS3836E18 variant (1.71 V threshold). The TPS3836K33 will assert RESET continuously below ~2.84 V and cannot reliably supervise lower-voltage rails.

What is the maximum supply voltage the TPS3836K33 can tolerate on the VDD pin?

The TPS3836K33 has an absolute maximum VDD rating of 7 V. Exceeding this voltage-even transiently-may cause permanent damage. While the device operates from 1.6 V to 6 V per recommended conditions, designs with potential overshoot (e.g., hot-swap or load-dump scenarios) must include clamping or filtering. The TPS3836K33 datasheet explicitly warns against sustained exposure above 7 V.

TPS3836K33DBVR 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:: 2.93V

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

TPS3836K33DBVR FAQ

1.How can I place an order for TPS3836K33DBVR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3836K33DBVR 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 TPS3836K33DBVR reliable?

The price and inventory of TPS3836K33DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836K33DBVR is usually 5 days.

3.What payment methods are accepted for TPS3836K33DBVR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3836K33DBVR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3836K33DBVR?

TPS3836K33DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3836K33DBVR 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 TPS3836K33DBVR?

For technical support, including TPS3836K33DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836K33DBVR requirements.

6.How does Aetrix verify that TPS3836K33DBVR is sourced from the original manufacturer or authorized distributors?

All TPS3836K33DBVR 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 TPS3836K33DBVR meets industry standards.

7.What is the process for return or replacement of TPS3836K33DBVR?

All TPS3836K33DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836K33DBVR, 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 TPS3836K33DBVR part is unused and in its original packaging.

Return procedure for TPS3836K33DBVR:

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…