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

Texas Instruments TPS3837L30DBVT

Name: TPS3837L30DBVT
Brand: Texas Instruments
SKU: TPS3837L30DBVT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3837L30DBVT

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3837L30DBVT.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

TPS3837L30DBVT from Texas Instruments is a nano-power voltage supervisor IC with active-high push-pull RESET output, 2.64 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-powered MSP430 microcontrollers and lithium-ion powered instrumentation.

For engineers reviewing the TPS3837L30DBVT datasheet, TPS3837L30DBVT pinout, TPS3837L30DBVT application, or TPS3837L30DBVT equivalent, key selection criteria include its precise 2.64 V supervision level, manual reset (MR) support, CT-configurable delay, SOT-23-5 package compatibility, and operation across –40°C to 85°C industrial temperature range.

Technical Context

The TPS3837L30DBVT implements a precision bandgap-based voltage comparator with internal hysteresis (40 mV typical for 2.5–3.5 V thresholds) to reject noise-induced false resets. Its reset assertion logic responds to both undervoltage events on VDD and active-low manual reset pulses on MR, with independent propagation delays (t_PLH = 10 µs typical for VDD-to-RESET, t_PLH = 0.3 µs for MR-to-RESET).

Delay timing is controlled solely by the CT pin state: grounded for 10 ms nominal delay, tied to VDD for 200 ms nominal delay - no external capacitor required. The active-high push-pull RESET output drives high without external pull-up, simplifying interface with MCUs requiring active-high reset signals like certain MSP430 variants.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.6 V to 6 V - supports direct monitoring of Li-ion (3.0–4.2 V), 3.3 V, and 2.5 V rails without external scaling.
Threshold Voltage (V_IT)	2.64 V (typical), ±1.5% over temperature - ensures reliable 3.0 V system reset at battery discharge endpoints.
Reset Delay Options	10 ms (CT = GND) or 200 ms (CT = VDD) - eliminates need for external RC timing networks.
Supply Current (I_DD)	220 nA (typical) at VDD > V_IT, VDD < 3 V - enables multi-year operation on coin-cell or small Li-ion batteries.
Output Type	Active-high push-pull RESET - drives high when inactive; no external pull-up resistor required, reducing BOM count.
Hysteresis (V_HYS)	40 mV (typical) - prevents oscillation during slow-rising or noisy supply transitions near V_IT.
Propagation Delay (t_PLH)	10 µs (typical, VDD → RESET) - ensures fast response to supply faults while maintaining noise immunity.

Pinout & Package

TPS3837L30DBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained portable designs.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power input and monitored supply rail	Input voltage sensed by internal comparator; device operates and supervises this rail directly.
GND	Ground reference	Common return path for VDD, MR, CT, and RESET; must be low-impedance for stable threshold accuracy.
CT	Delay configuration control	Connect to GND for 10 ms reset delay, or to VDD for 200 ms delay - no capacitor needed.
MR	Manual reset input	Active-low logic input; asserts RESET high when pulled low, enabling system-initiated resets independent of VDD.
RESET	Active-high push-pull output	Drives high when reset condition is active (VDD < V_IT or MR low); sinks current when low - no pull-up required.

Key Features

Feature	Design Value
Nano-power operation	220 nA typical I_DD extends battery life in always-on monitoring applications beyond 10 years on CR2032.
Selectably timed reset	Hardware-selectable 10 ms / 200 ms delay via CT pin eliminates timing component tolerance and layout sensitivity.
Active-high push-pull output	Direct interface with MCUs requiring active-high reset (e.g., MSP430FRxx) without external pull-up or level-shifting.
Precision threshold with hysteresis	2.64 V ±1.5% V_IT and 40 mV V_HYS ensure robust immunity to supply ripple and transient noise.
Manual reset with low-leakage input	MR input draws only –60 µA max at 0.7×VDD, minimizing power loss in battery-backed reset button circuits.

Applications

Battery-Powered MCU Supervision	Lithium-Ion Undervoltage Protection
Use Scenario: Monitoring 3.0 V nominal supply in an MSP430-based wireless sensor node powered by a single Li-ion cell. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to hold MCU in reset until VDD rises above 2.64 V + 40 mV and remains stable for 200 ms. Use Value: Prevents MCU brownout operation during battery discharge below 3.0 V, ensuring deterministic boot and flash write integrity.	Use Scenario: Protecting a portable medical instrument using a 3.6 V Li-ion battery against deep discharge damage. IC Role / Device Role / Timing Role: Detecting battery voltage drop below 2.64 V and holding system reset for 200 ms after recovery to prevent premature reactivation. Use Value: Extends battery cycle life by enforcing minimum safe discharge voltage and avoiding repeated low-voltage resets.
Low-Power Industrial Instrumentation	Intelligent Sensor Node Initialization
Use Scenario: Power sequencing and fault detection in a handheld multimeter with segmented LCD and precision ADC. IC Role / Device Role / Timing Role: Providing clean power-on reset with 10 ms delay (CT = GND) to synchronize analog front-end stabilization and digital core initialization. Use Value: Eliminates startup glitches and measurement errors caused by asynchronous power rail ramp rates.	Use Scenario: Ensuring reliable boot of an environmental sensor node (temperature/humidity/pressure) operating from energy harvesting. IC Role / Device Role / Timing Role: Acting as first-stage supervisor that releases MCU reset only after harvested supply exceeds 2.64 V and remains valid for ≥200 ms. Use Value: Guarantees sufficient charge accumulation before enabling power-hungry radio transmission and sensor acquisition.

Battery-Powered MCU Supervision

Lithium-Ion Undervoltage Protection

Use Scenario: Monitoring 3.0 V nominal supply in an MSP430-based wireless sensor node powered by a single Li-ion cell.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to hold MCU in reset until VDD rises above 2.64 V + 40 mV and remains stable for 200 ms.

Use Value: Prevents MCU brownout operation during battery discharge below 3.0 V, ensuring deterministic boot and flash write integrity.

Use Scenario: Protecting a portable medical instrument using a 3.6 V Li-ion battery against deep discharge damage.

IC Role / Device Role / Timing Role: Detecting battery voltage drop below 2.64 V and holding system reset for 200 ms after recovery to prevent premature reactivation.

Use Value: Extends battery cycle life by enforcing minimum safe discharge voltage and avoiding repeated low-voltage resets.

Low-Power Industrial Instrumentation

Intelligent Sensor Node Initialization

Use Scenario: Power sequencing and fault detection in a handheld multimeter with segmented LCD and precision ADC.

IC Role / Device Role / Timing Role: Providing clean power-on reset with 10 ms delay (CT = GND) to synchronize analog front-end stabilization and digital core initialization.

Use Value: Eliminates startup glitches and measurement errors caused by asynchronous power rail ramp rates.

Use Scenario: Ensuring reliable boot of an environmental sensor node (temperature/humidity/pressure) operating from energy harvesting.

IC Role / Device Role / Timing Role: Acting as first-stage supervisor that releases MCU reset only after harvested supply exceeds 2.64 V and remains valid for ≥200 ms.

Use Value: Guarantees sufficient charge accumulation before enabling power-hungry radio transmission and sensor acquisition.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3836L30DBVT	Active-low push-pull RESET output; identical V_IT (2.64 V), delay options, and quiescent current.	Requires MCU with active-low reset input; no pull-up needed but incompatible with active-high reset logic.	Select when interfacing with legacy MCUs or ASICs specifying active-low reset assertion.
TPS3838L30DBVT	Active-low open-drain RESET output; same V_IT and delay options, but requires external pull-up resistor.	Suitable for wired-OR reset buses or level translation; higher effective leakage due to pull-up current.	Choose when multiple supervisors share a common reset line or when interfacing with 5 V tolerant inputs.

Compared with TPS3837L30DBVT, TPS3836L30DBVT provides identical supervision accuracy and timing but inverted reset polarity, while TPS3838L30DBVT adds bus-sharing capability at the cost of added component count and static current.

Availability

TPS3837L30DBVT is available at Aetrix Electronics and suitable for battery-powered instrumentation, ultra-low-power MCU supervision, and lithium-ion protected systems requiring stable component supply with guaranteed long-term availability.

Supply support for TPS3837L30DBVT 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 TPS383x family was developed specifically for nano-power voltage supervision in battery-critical applications, targeting extended runtime, high accuracy, and minimal external components in portable and energy-harvesting systems.

FAQ

What is the exact reset threshold voltage of the TPS3837L30DBVT?

The TPS3837L30DBVT has a nominal threshold voltage (V_IT) of 2.64 V, with a guaranteed range of 2.56 V to 2.69 V over –40°C to 85°C. This value is factory-trimmed and specified in the Electrical Characteristics table of the SLVS292F datasheet under the TPS383xL30 variant designation.

Does the TPS3837L30DBVT require an external pull-up resistor on the RESET pin?

No, the TPS3837L30DBVT features an active-high push-pull RESET output and does not require an external pull-up resistor. The output actively drives high during reset assertion and low during deassertion, eliminating BOM components and ensuring defined logic levels under all conditions.

How is the reset delay time selected on the TPS3837L30DBVT?

The reset delay time on the TPS3837L30DBVT is selected by the voltage applied to the CT pin: connecting CT to GND configures a 10 ms nominal delay, while connecting CT to VDD selects a 200 ms nominal delay. No external capacitor is needed - timing is internally generated and factory-characterized.

Can the TPS3837L30DBVT monitor supplies above 3.3 V?

Yes, the TPS3837L30DBVT supports input voltages from 1.6 V to 6 V, making it suitable for monitoring 3.6 V Li-ion batteries, 5 V rails, and other higher-voltage domains. Its absolute maximum VDD rating is 7 V, but operation above 6 V is outside recommended conditions.

What is the function of the MR pin on the TPS3837L30DBVT?

The MR (Manual Reset) pin on the TPS3837L30DBVT is an active-low input that forces the RESET output high when asserted. When MR is pulled low, the device immediately activates reset regardless of VDD level. If unused, MR must be tied to VDD to minimize leakage current.

TPS3837L30DBVT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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 High

Reset Timeout:: 10ms Minimum

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TPS3837L30DBVT FAQ

1.How can I place an order for TPS3837L30DBVT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3837L30DBVT 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 TPS3837L30DBVT reliable?

The price and inventory of TPS3837L30DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3837L30DBVT is usually 5 days.

3.What payment methods are accepted for TPS3837L30DBVT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3837L30DBVT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS3837L30DBVT?

TPS3837L30DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3837L30DBVT 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 TPS3837L30DBVT?

For technical support, including TPS3837L30DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3837L30DBVT requirements.

6.How does Aetrix verify that TPS3837L30DBVT is sourced from the original manufacturer or authorized distributors?

All TPS3837L30DBVT 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 TPS3837L30DBVT meets industry standards.

7.What is the process for return or replacement of TPS3837L30DBVT?

All TPS3837L30DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3837L30DBVT, 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 TPS3837L30DBVT part is unused and in its original packaging.

Return procedure for TPS3837L30DBVT:

1.Submit a request within 90 days.

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

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