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

Texas Instruments TPS3838L30DBVRG4

Name: TPS3838L30DBVRG4
Brand: Texas Instruments
SKU: TPS3838L30DBVRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS3838L30DBVRG4

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: TPS3838L30DBVRG4.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

TPS3838L30DBVRG4 from Texas Instruments is a nano-power voltage supervisor IC with active-low open-drain 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 microcontrollers and MSP430-based designs.

For engineers reviewing the TPS3838L30DBVRG4 datasheet, TPS3838L30DBVRG4 pinout, TPS3838L30DBVRG4 application, or TPS3838L30DBVRG4 equivalent, key selection criteria include its open-drain RESET interface requiring external pullup, precise 2.64 V undervoltage detection, CT-configurable delay timing, and operation across –40°C to 85°C in the 2-mm × 2-mm WSON-6 package.

Technical Context

The TPS3838L30DBVRG4 implements a precision bandgap reference and comparator to monitor VDD against a fixed internal threshold of 2.64 V (V_IT) with 40 mV hysteresis (V_HYS). Its reset assertion path includes propagation delay t_PHL ≤ 10 µs and supports manual reset via active-low MR input.

Delay timing is set by CT pin logic level: GND selects 10 ms nominal delay (t_D = 5–15 ms), VDD selects 200 ms nominal delay (t_D = 100–300 ms). The open-drain RESET output requires an external pullup resistor per recommended operating conditions (e.g., 10–100 kΩ depending on load).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage range	1.6 V to 6 V - supports Li-ion, coin-cell, and multi-rail embedded supplies
Threshold voltage (V_IT)	2.64 V (typical) - detects undervoltage at 3.0 V nominal rail with 6% margin
Reset delay options	10 ms or 200 ms (CT-selectable) - enables fast recovery or noise-immune hold-off
Supply current (I_DD)	220 nA (typical) at VDD > V_IT, VDD < 3 V - extends battery life in always-on monitoring
Output type	Active-low open-drain - requires external pullup; compatible with mixed-voltage logic
Hysteresis (V_HYS)	40 mV - prevents chatter during slow-rising or noisy supply transitions
Operating temperature	–40°C to +85°C - qualified for industrial and portable consumer environments

Pinout & Package

TPS3838L30DBVRG4 is housed in a 2-mm × 2-mm, 6-pin WSON (DRV) package with wettable flanks, RoHS-compliant, and rated for surface-mount reflow (MSL Level-1).

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power input	Monitored supply rail; device operates from 1.6 V to 6 V
GND	Ground reference	Analog and digital ground return; must be low-impedance
CT	Delay configuration	Connect to GND for 10 ms delay, to VDD for 200 ms delay
MR	Manual reset input	Active-low signal; forces RESET assertion when pulled low
RESET	Open-drain output	Active-low reset signal; requires external pullup resistor
N/C	No connect	Internally unconnected; leave floating or tie to GND (no effect)

Key Features

Feature	Design Value
Nano-power operation	220 nA typical I_DD enables multi-year battery life in coin-cell applications
Fixed 2.64 V threshold	Matches 3.0 V system rails with built-in 40 mV hysteresis for stable release
Selectably timed reset	Hardware-configured delay (10 ms or 200 ms) eliminates need for external RC timing
Open-drain RESET	Supports voltage-level translation and wired-OR reset bus architectures
Manual reset support	MR pin allows system-initiated reset independent of supply condition

Applications

Portable Medical Sensors	MSP430-Based Data Loggers
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable power-on and brownout reset without draining battery. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to wake or hold MSP430 until VDD ≥ 2.64 V + 40 mV for 200 ms. Use Value: 220 nA quiescent current extends operational life beyond 5 years; open-drain output interfaces directly with MSP430's reset pin.	Use Scenario: Environmental data logger using MSP430FR5969, sampling every 10 minutes and sleeping between reads. IC Role / Device Role / Timing Role: Monitors 3.0 V regulated rail; asserts RESET on undervoltage and releases only after 200 ms stable recovery. Use Value: CT = VDD configures 200 ms delay to prevent spurious resets from transient load dips; N/C pin simplifies PCB layout.
Lithium-Ion Battery Protection	Low-Power Wireless Sensor Nodes
Use Scenario: Smart battery pack with fuel gauge and protection circuitry, where undervoltage lockout must trigger before cell damage. IC Role / Device Role / Timing Role: Supervises 3.6 V Li-ion cell; triggers RESET when voltage drops below 2.64 V and holds for 10 ms minimum. Use Value: Fixed 2.64 V threshold aligns with 3.0 V system cutoff; 10 ms delay (CT = GND) enables rapid fault response during discharge termination.	Use Scenario: Zigbee/Thread end-node powered by two AA alkalines, entering deep sleep between transmissions. IC Role / Device Role / Timing Role: Ensures clean MCU initialization at power-up and prevents erratic behavior during battery sag under RF transmit load. Use Value: Open-drain RESET allows shared reset bus across multiple peripherals; 220 nA I_DD contributes <0.1% to total sleep current budget.

Portable Medical Sensors

MSP430-Based Data Loggers

Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable power-on and brownout reset without draining battery.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to wake or hold MSP430 until VDD ≥ 2.64 V + 40 mV for 200 ms.

Use Value: 220 nA quiescent current extends operational life beyond 5 years; open-drain output interfaces directly with MSP430's reset pin.

Use Scenario: Environmental data logger using MSP430FR5969, sampling every 10 minutes and sleeping between reads.

IC Role / Device Role / Timing Role: Monitors 3.0 V regulated rail; asserts RESET on undervoltage and releases only after 200 ms stable recovery.

Use Value: CT = VDD configures 200 ms delay to prevent spurious resets from transient load dips; N/C pin simplifies PCB layout.

Lithium-Ion Battery Protection

Low-Power Wireless Sensor Nodes

Use Scenario: Smart battery pack with fuel gauge and protection circuitry, where undervoltage lockout must trigger before cell damage.

IC Role / Device Role / Timing Role: Supervises 3.6 V Li-ion cell; triggers RESET when voltage drops below 2.64 V and holds for 10 ms minimum.

Use Value: Fixed 2.64 V threshold aligns with 3.0 V system cutoff; 10 ms delay (CT = GND) enables rapid fault response during discharge termination.

Use Scenario: Zigbee/Thread end-node powered by two AA alkalines, entering deep sleep between transmissions.

IC Role / Device Role / Timing Role: Ensures clean MCU initialization at power-up and prevents erratic behavior during battery sag under RF transmit load.

Use Value: Open-drain RESET allows shared reset bus across multiple peripherals; 220 nA I_DD contributes <0.1% to total sleep current budget.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3838L30DBVT	Same die, 250-unit small tape-and-reel packaging; identical electrical specs and pinout	No functional difference; selected for prototyping or low-volume production	Choose DBVT for evaluation or pilot builds; DBVRG4 is optimized for high-volume automated assembly
TPS3836L30DBVR	Push-pull active-low RESET output; no external pullup required; same V_IT, delay options, and I_DD	Suitable where board space or BOM count must be minimized and logic-high idle state is acceptable	Prefer TPS3836L30DBVR if eliminating pullup resistor is critical; TPS3838L30DBVRG4 is mandatory for wired-OR or level-shifted reset buses

Compared with TPS3838L30DBVRG4, TPS3838L30DBVT offers identical performance in smaller reels for development, while TPS3836L30DBVR removes the pullup requirement but sacrifices bus-sharing capability - making TPS3838L30DBVRG4 the optimal choice for multi-device reset coordination in space-constrained, battery-critical systems.

Availability

TPS3838L30DBVRG4 is available at Aetrix Electronics and suitable for portable medical sensors, MSP430-based data loggers, and lithium-ion battery protection circuits requiring stable component supply, long-lifecycle assurance, and guaranteed nano-power performance.

Supply support for TPS3838L30DBVRG4 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, precision analog, and industrial-grade reliability.

The TPS383x family was designed specifically for ultra-low-power voltage supervision in battery-operated and energy-harvesting systems, emphasizing nanoscale quiescent current, factory-trimmed thresholds, and flexible reset timing without external components.

FAQ

What is the exact threshold voltage of the TPS3838L30DBVRG4?

The TPS3838L30DBVRG4 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; it corresponds to the "L30" suffix denoting the 3.0 V nominal supply supervision variant.

Does the TPS3838L30DBVRG4 require an external pullup resistor on the RESET pin?

Yes, the TPS3838L30DBVRG4 features an active-low open-drain RESET output and requires an external pullup resistor. The Recommended Operating Conditions specify a pullup value dependent on load; typical values range from 10 kΩ to 100 kΩ. This differs from the push-pull variants (e.g., TPS3836) which do not require external biasing.

How is the reset delay time configured on the TPS3838L30DBVRG4?

The reset delay time on the TPS3838L30DBVRG4 is selected via the CT pin: connecting CT to GND sets the delay to 10 ms (5–15 ms range), while connecting CT to VDD sets it to 200 ms (100–300 ms range). No external capacitor is needed - timing is internally generated and factory-characterized.

What package type does the TPS3838L30DBVRG4 use, and what are its key mechanical attributes?

The TPS3838L30DBVRG4 uses the DRV (WSON-6) package: a 2.00 mm × 2.00 mm, 0.75 mm body height, 6-pin leadless package with wettable flanks. It features a thermal pad on the bottom for enhanced heat dissipation and is rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), supporting standard Pb-free reflow profiles.

Can the TPS3838L30DBVRG4 be used in automotive applications?

No - the TPS3838L30DBVRG4 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. For automotive use, TI offers the pin-compatible TPS383x-Q1 series (e.g., TPS3838L30QDBVRQ1), which undergoes extended qualification including temperature cycling, humidity testing, and failure analysis per automotive standards.

TPS3838L30DBVRG4 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:: 2.64V

Output:: Open Drain or Open Collector

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

TPS3838L30DBVRG4 FAQ

1.How can I place an order for TPS3838L30DBVRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3838L30DBVRG4 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 TPS3838L30DBVRG4 reliable?

The price and inventory of TPS3838L30DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3838L30DBVRG4 is usually 5 days.

3.What payment methods are accepted for TPS3838L30DBVRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3838L30DBVRG4 transactions.

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4.How is shipping managed for TPS3838L30DBVRG4?

TPS3838L30DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3838L30DBVRG4 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 TPS3838L30DBVRG4?

For technical support, including TPS3838L30DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3838L30DBVRG4 requirements.

6.How does Aetrix verify that TPS3838L30DBVRG4 is sourced from the original manufacturer or authorized distributors?

All TPS3838L30DBVRG4 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 TPS3838L30DBVRG4 meets industry standards.

7.What is the process for return or replacement of TPS3838L30DBVRG4?

All TPS3838L30DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3838L30DBVRG4, 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 TPS3838L30DBVRG4 part is unused and in its original packaging.

Return procedure for TPS3838L30DBVRG4:

1.Submit a request within 90 days.

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

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