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Texas Instruments TPS3837L30DBVTG4
- Part No.:
- TPS3837L30DBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3837L30DBVTG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
TPS3837L30DBVTG4 from Texas Instruments is a nano-power voltage supervisor IC with active-high push-pull RESET output, 2.64 V threshold voltage (VIT), 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-backed microcontrollers and MSP430-based designs.
For engineers reviewing the TPS3837L30DBVTG4 datasheet, TPS3837L30DBVTG4 pinout, TPS3837L30DBVTG4 application, or TPS3837L30DBVTG4 equivalent, key selection criteria include its precise 2.64 V supervision level, manual reset (MR) support, CT-configurable delay, −40°C to 85°C operation, and SOT-23-5 package compatibility with space-constrained portable electronics.
Technical Context
The TPS3837L30DBVTG4 implements a precision band-gap reference and comparator-based supervision architecture with hysteresis (VHYS = 40 mV for 2.5 V < VIT < 3.5 V) to prevent false resets during supply transients. Its internal timer initiates after VDD exceeds VIT + VHYS, enabling deterministic deassertion timing.
It features dual-input reset control: power-on reset triggered when VDD rises above 1.1 V, and manual reset (MR) with active-low logic that asserts RESET high within 0.3 µs (typical). The CT pin selects between 10 ms (CT = GND) and 200 ms (CT = VDD) delay times without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports Li-ion, coin-cell, and regulated 3.3 V/2.5 V rails |
| Threshold Voltage (VIT) | 2.64 V (typical) - precisely supervises 3.0 V nominal supplies with ±3% tolerance over temperature |
| Reset Delay Options | 10 ms or 200 ms - selected by CT pin connection; no external capacitor required |
| Supply Current (IDD) | 220 nA (typical) at VDD < 3 V - enables multi-year battery life in always-on monitoring |
| Output Type | Active-high push-pull RESET - eliminates need for external pull-up resistor |
| Propagation Delay (tPLH) | 10 µs (typical) - ensures fast response to MR assertion or VDD drop below VIT |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended commercial environments |
Pinout & Package
TPS3837L30DBVTG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Input | Monitored supply rail input; device operates from 1.6 V to 6 V |
| GND | Ground Reference | Analog and digital ground return path; must be low-impedance |
| CT | Delay Configuration | Connect to GND for 10 ms delay or to VDD for 200 ms delay; no external components needed |
| MR | Manual Reset Input | Active-low logic input; asserts RESET high within 0.3 µs when pulled low |
| RESET | Active-High Output | Push-pull driver; drives high when VDD ≥ VIT + VHYS and MR = high after delay; no pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 220 nA typical IDD enables >10-year battery life in coin-cell applications |
| Fixed 2.64 V threshold | Matches 3.0 V system rails with guaranteed 2.56 V to 2.69 V range across temperature |
| Selectably timed reset | 10 ms or 200 ms delay via single CT pin connection-no timing capacitor or layout change |
| Active-high push-pull output | Eliminates external pull-up resistor, reducing BOM count and board area |
| Manual reset with fast response | 0.3 µs tPLH/tPHL ensures immediate system-level reset initiation on MR assertion |
Applications
| Portable Medical Sensors | MSP430-Based Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring undervoltage detection before sensor calibration failure. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to halt MCU execution when battery drops below 2.64 V. Use Value: 220 nA quiescent current extends operational life beyond 5 years; 200 ms delay prevents false resets during transient load spikes. | Use Scenario: Environmental data logger using MSP430FR5969, sampling temperature/humidity every 10 seconds with deep-sleep between cycles. IC Role / Device Role / Timing Role: System initialization and brownout protection; generates clean power-on reset and responds to MR for firmware recovery. Use Value: Active-high push-pull RESET directly interfaces MSP430's RST/NMI pin without pull-up; CT = VDD configures 200 ms hold time for stable wake-up. |
| Wireless Sensor Nodes | Industrial Handheld Terminals |
Use Scenario: LoRaWAN node with SX1276 transceiver and STM32L0, operating from 3.0 V Li-SOCl₂ battery in remote asset tracking. IC Role / Device Role / Timing Role: Monitors main supply and triggers hardware reset if voltage sags below 2.64 V during RF transmission burst. Use Value: 40 mV hysteresis prevents oscillation near threshold; 10 ms delay (CT = GND) enables rapid recovery after brief dips. | Use Scenario: Ruggedized barcode scanner with ARM Cortex-M4, requiring reliable boot sequencing and field-serviceable reset capability. IC Role / Device Role / Timing Role: Primary power supervisor coordinating boot readiness with PMIC and application processor; MR pin wired to service button. Use Value: −40°C to +85°C rating ensures operation in warehouse/freezer environments; SOT-23-5 footprint simplifies rework and automated assembly. |
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 VIT (2.64 V), delay options, and quiescent current | Requires MCU reset pin compatible with active-low assertion; no pull-up needed | Select when host processor expects active-low reset signal and board layout cannot accommodate level-shifting |
| TPS3838L30DBVT | Active-low open-drain RESET output; same VIT and delay options but requires external pull-up resistor | Suitable for wired-OR reset buses or mixed-voltage systems where RESET must be level-shifted | Choose when system uses shared reset bus or needs voltage translation between domains |
Compared with TPS3837L30DBVTG4, TPS3836L30DBVT provides identical supervision accuracy and ultra-low power but asserts reset low, while TPS3838L30DBVT adds bus-sharing capability at the cost of an external resistor and slightly higher effective leakage.
Availability
TPS3837L30DBVTG4 is available at Aetrix Electronics and suitable for portable medical sensors, MSP430-based data loggers, wireless sensor nodes, industrial handheld terminals, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for TPS3837L30DBVTG4 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 for industrial, automotive, and personal electronics markets.
The TPS383x family was designed specifically for ultra-low-power voltage supervision in battery-critical applications, emphasizing nanoscale current consumption, precise threshold accuracy, and flexible reset timing without external components.
FAQ
What is the exact threshold voltage of the TPS3837L30DBVTG4?
The TPS3837L30DBVTG4 has a nominal threshold voltage (VIT) of 2.64 V, with a guaranteed range of 2.56 V to 2.69 V across −40°C to +85°C. This value is factory-trimmed and fixed for the L30 variant, matching 3.0 V system rails with tight tolerance to prevent premature or delayed reset assertion.
How does the CT pin configure reset delay on the TPS3837L30DBVTG4?
The CT pin on the TPS3837L30DBVTG4 selects reset delay time: connecting CT to GND sets tD = 10 ms (typical), while connecting CT to VDD sets tD = 200 ms (typical). No external capacitor is required. The delay starts after VDD rises above VIT + VHYS and MR returns high, ensuring clean system initialization.
Does the TPS3837L30DBVTG4 require an external pull-up resistor on the RESET pin?
No, the TPS3837L30DBVTG4 does not require an external pull-up resistor because it features an active-high push-pull RESET output. The internal driver actively pulls the pin high when deasserted and low when asserted, eliminating external components and reducing board area and BOM cost compared to open-drain alternatives like the TPS3838L30DBVTG4.
What is the supply current specification for the TPS3837L30DBVTG4 at 3.3 V?
At VDD = 3.3 V and VDD > VIT, the TPS3837L30DBVTG4 draws 250 nA typical supply current (IDD), with a maximum of 450 nA over temperature. This ultra-low quiescent current enables multi-year operation from primary lithium or coin-cell batteries in always-on monitoring applications.
Can the TPS3837L30DBVTG4 be used in automotive applications?
The TPS3837L30DBVTG4 is rated for −40°C to +85°C and is intended for industrial and commercial applications. For automotive use, Texas Instruments specifies the TPS383x-Q1 series (e.g., TPS3837L30QDBVRQ1), which undergoes AEC-Q100 qualification, offers extended temperature range (−40°C to +125°C), and includes automotive-specific reliability testing and documentation.
TPS3837L30DBVTG4 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
TPS3837L30DBVTG4 FAQ
1.How can I place an order for TPS3837L30DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3837L30DBVTG4 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 TPS3837L30DBVTG4 reliable?
The price and inventory of TPS3837L30DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3837L30DBVTG4 is usually 5 days.
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TPS3837L30DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3837L30DBVTG4 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 TPS3837L30DBVTG4?
For technical support, including TPS3837L30DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3837L30DBVTG4 requirements.
6.How does Aetrix verify that TPS3837L30DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS3837L30DBVTG4 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 TPS3837L30DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS3837L30DBVTG4?
All TPS3837L30DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3837L30DBVTG4, 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 TPS3837L30DBVTG4 part is unused and in its original packaging.
Return procedure for TPS3837L30DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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