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

Texas Instruments TPS3809L30DBVT

Name: TPS3809L30DBVT
Brand: Texas Instruments
SKU: TPS3809L30DBVT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3809L30DBVT

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: TPS3809L30DBVT.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-3

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Product details

Overview

TPS3809L30DBVT from Texas Instruments is a 3-pin SOT-23 supply voltage supervisor IC designed for precise power-on reset and brownout detection in processor-based systems. It features a fixed 2.64 V threshold voltage, 9 μA typical supply current, 200 ms reset delay time, push-pull active-low RESET output, and operates across –40°C to +85°C - used in motor drives and factory automation for reliable system initialization.

For engineers reviewing the TPS3809L30DBVT datasheet, TPS3809L30DBVT pinout, TPS3809L30DBVT application, or TPS3809L30DBVT equivalent, key selection criteria include threshold accuracy (±2.5% over temperature), low quiescent current, no external components required, SOT-23 footprint compatibility, and direct functional replacement for MAX809L variants in embedded reset circuits.

Technical Context

The TPS3809L30DBVT integrates an internal 1.137 V reference, precision resistor divider, comparator, timer, and push-pull output stage to monitor VDD and assert RESET until VDD exceeds 2.64 V and remains stable for 200 ms. Its architecture eliminates need for external timing capacitors or pull-up resistors.

During undervoltage events, RESET reasserts immediately when VDD falls below the hysteresis-enhanced threshold (VIT– = 2.58 V, Vhys = 35 mV). The device uses a single-supply design with GND, VDD, and RESET pins - no enable or watchdog inputs - making it suitable for simple, cost-sensitive reset supervision.

Key Specifications

Parameter	Value and Actual Design Meaning
Threshold Voltage (VIT)	2.64 V (fixed, ±2.5% over –40°C to +85°C; enables reliable 3.0 V rail monitoring)
Reset Delay Time (t_d)	200 ms typical (ensures complete processor initialization before release)
Supply Current (I_DD)	9 μA typical at 2 V (minimizes standby power in battery-backed or energy-sensitive systems)
Output Type	Push-pull active-low RESET (drives directly without external pull-up; sinks 500 μA @ 0.3 V)
Operating Temperature	–40°C to +85°C (qualified for industrial environments including motor drives and building automation)
Package	SOT-23 (DBV), 2.90 mm × 1.60 mm body (3-pin, surface-mount compatible with standard reflow profiles)
Absolute Max VDD	6.5 V (allows safe operation with 5 V or 3.3 V rails plus margin)

Pinout & Package

SOT-23 (DBV) package: 3-pin, 2.90 mm × 1.60 mm body, 1.45 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Ground reference	Low-impedance connection required; serves as return path for RESET sink current and internal bias
RESET (Pin 2)	Active-low reset output	Push-pull driver; asserts low during power-up/brownout; deasserts after 200 ms delay once VDD > 2.64 V
VDD (Pin 3)	Supply input	Monitored rail input; requires 0.1 µF ceramic bypass capacitor to GND for threshold stability

Key Features

Feature	Design Value
Fixed threshold accuracy	2.64 V ±2.5% over full temperature range - ensures consistent reset behavior without calibration
No external components	Integrated timing and reference eliminate need for RC networks or pull-ups - reduces BOM count and board area
Low-power operation	9 μA typical supply current - extends battery life in always-on industrial sensors and metering applications
Robust output drive	Push-pull RESET capable of sinking 500 μA at 0.3 V - directly interfaces with microcontroller reset inputs without level-shifting
Thermal hysteresis	35 mV threshold hysteresis - prevents oscillation during slow-rising or noisy supply conditions

Applications

Factory Automation	Motor Drives
Use Scenario: PLC I/O modules and motion controllers requiring deterministic power-on sequencing and brownout recovery. IC Role / Device Role / Timing Role: Supervises 3.0 V logic supply and triggers hardware reset before firmware execution begins. Use Value: Prevents erratic startup due to marginal VDD by enforcing 200 ms stabilization window and precise 2.64 V trip point.	Use Scenario: Inverter gate drivers and position feedback circuits where supply transients occur during high-current switching. IC Role / Device Role / Timing Role: Monitors auxiliary 3.0 V bias rail and asserts RESET if voltage dips below 2.58 V during load surges. Use Value: Eliminates MCU lockup or gate driver misfire using 35 mV hysteresis and fast 10 μs response to falling VDD.
Building Automation	Electricity Meters
Use Scenario: Smart HVAC controllers and lighting nodes deployed in unregulated AC/DC environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Provides cold-start reset for ARM Cortex-M MCUs operating from 3.0 V DC-DC outputs. Use Value: Guarantees reliable boot at –40°C via tested –40°C to +85°C operation and low 9 μA quiescent draw.	Use Scenario: Revenue-grade electricity meters needing tamper-resistant, long-life reset supervision under battery backup. IC Role / Device Role / Timing Role: Supervises supercapacitor-backed 3.0 V rail during mains failure and initiates graceful shutdown. Use Value: Enables >10-year field life with ultra-low 9 μA IDD and no electrolytic timing components.

Factory Automation

Motor Drives

Use Scenario: PLC I/O modules and motion controllers requiring deterministic power-on sequencing and brownout recovery.

IC Role / Device Role / Timing Role: Supervises 3.0 V logic supply and triggers hardware reset before firmware execution begins.

Use Value: Prevents erratic startup due to marginal VDD by enforcing 200 ms stabilization window and precise 2.64 V trip point.

Use Scenario: Inverter gate drivers and position feedback circuits where supply transients occur during high-current switching.

IC Role / Device Role / Timing Role: Monitors auxiliary 3.0 V bias rail and asserts RESET if voltage dips below 2.58 V during load surges.

Use Value: Eliminates MCU lockup or gate driver misfire using 35 mV hysteresis and fast 10 μs response to falling VDD.

Building Automation

Electricity Meters

Use Scenario: Smart HVAC controllers and lighting nodes deployed in unregulated AC/DC environments with wide ambient temperature swings.

IC Role / Device Role / Timing Role: Provides cold-start reset for ARM Cortex-M MCUs operating from 3.0 V DC-DC outputs.

Use Value: Guarantees reliable boot at –40°C via tested –40°C to +85°C operation and low 9 μA quiescent draw.

Use Scenario: Revenue-grade electricity meters needing tamper-resistant, long-life reset supervision under battery backup.

IC Role / Device Role / Timing Role: Supervises supercapacitor-backed 3.0 V rail during mains failure and initiates graceful shutdown.

Use Value: Enables >10-year field life with ultra-low 9 μA IDD and no electrolytic timing components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV809E30DBVR	Same 2.64 V threshold, identical SOT-23 pinout, but 1.8 V to 6 V operating range vs. TPS3809L30DBVT's 2 V to 6 V; 5 μA typical I_DD.	Lower supply current and wider VDD range support newer ultra-low-power MCUs; same timing and output drive.	Select TLV809E30DBVR for next-gen designs prioritizing sub-6 μA standby or 1.8 V logic compatibility.
MAX809LTRD3+T	Pin-compatible 2.63 V supervisor (±2.5%), but higher 15 μA I_DD, no hysteresis spec, and only rated to +70°C industrial grade.	Limited thermal margin for extended industrial use; lacks documented hysteresis, increasing noise susceptibility.	Choose MAX809LTRD3+T only for legacy drop-in replacement where +70°C max ambient suffices and hysteresis is not critical.

Compared with TLV809E30DBVR and MAX809LTRD3+T, the TPS3809L30DBVT delivers superior thermal robustness (–40°C to +85°C), verified 35 mV hysteresis for noise immunity, and TI's long-term industrial product continuity - making it optimal for new designs targeting reliability-critical infrastructure equipment.

Availability

TPS3809L30DBVT is available at Aetrix Electronics and suitable for factory automation, motor drives, and building automation requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TPS3809L30DBVT 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 leader delivering analog, embedded processing, and connectivity solutions with emphasis on industrial, automotive, and power management applications.

The TPS3809 family was designed specifically for cost-effective, low-power supply voltage supervision in DSP and microcontroller systems - emphasizing simplicity, precision, and SOT-23 footprint compatibility.

FAQ

What is the exact threshold voltage of the TPS3809L30DBVT?

The TPS3809L30DBVT has a nominal threshold voltage of 2.64 V, with guaranteed minimum and maximum values of 2.58 V and 2.70 V respectively over the full –40°C to +85°C operating temperature range. This value is fixed internally and does not require external configuration.

Does the TPS3809L30DBVT require an external pull-up resistor on the RESET pin?

No, the TPS3809L30DBVT features a push-pull RESET output that actively drives both high and low states. Unlike open-drain supervisors, it does not require an external pull-up resistor - simplifying layout and reducing component count.

What is the reset delay time specification for the TPS3809L30DBVT?

The TPS3809L30DBVT provides a typical reset delay time (t_d) of 200 ms, with a guaranteed range of 120 ms to 280 ms over temperature and voltage. This delay begins after VDD rises above the 2.64 V threshold and ensures sufficient time for power rail stabilization before releasing the processor reset.

Can the TPS3809L30DBVT be used with a 2.5 V supply rail?

No - the TPS3809L30DBVT is not specified for reliable operation below 2 V per its Recommended Operating Conditions. Its 2.64 V threshold makes it intended for 3.0 V systems; for 2.5 V rails, consider the TPS3809J25DBVT (2.25 V threshold) instead.

Is the TPS3809L30DBVT pin-compatible with MAX809 series devices?

Yes, the TPS3809L30DBVT is explicitly pin-for-pin compatible with the MAX809L series (e.g., MAX809LTRD3+T), sharing identical SOT-23 pinout (GND, RESET, VDD), function, and electrical interface - enabling direct substitution in existing layouts without PCB changes.

TPS3809L30DBVT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 2.64V

Output:: Push-Pull, Totem Pole

Reset:: Active Low

Reset Timeout:: 120ms Minimum

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

TPS3809L30DBVT FAQ

1.How can I place an order for TPS3809L30DBVT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3809L30DBVT 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 TPS3809L30DBVT reliable?

The price and inventory of TPS3809L30DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3809L30DBVT is usually 5 days.

3.What payment methods are accepted for TPS3809L30DBVT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3809L30DBVT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3809L30DBVT?

TPS3809L30DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3809L30DBVT 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 TPS3809L30DBVT?

For technical support, including TPS3809L30DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3809L30DBVT requirements.

6.How does Aetrix verify that TPS3809L30DBVT is sourced from the original manufacturer or authorized distributors?

All TPS3809L30DBVT 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 TPS3809L30DBVT meets industry standards.

7.What is the process for return or replacement of TPS3809L30DBVT?

All TPS3809L30DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3809L30DBVT, 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 TPS3809L30DBVT part is unused and in its original packaging.

Return procedure for TPS3809L30DBVT:

1.Submit a request within 90 days.

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

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