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Texas Instruments TPS3801L30DCKR
- Part No.:
- TPS3801L30DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3801L30DCKR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,567
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Product details
Overview
TPS3801L30DCKR from Texas Instruments is a fixed-threshold voltage supervisor IC designed for power-on reset and supply monitoring in processor-based systems. It features a 2.64 V detection threshold, 200 ms factory-programmed reset delay, push-pull RESET output, and operates from 1.6 V to 6 V supply with 12 µA typical supply current. It is used in microcontroller initialization circuits where precise brownout detection and reliable reset assertion are required.
For engineers reviewing the TPS3801L30DCKR datasheet, TPS3801L30DCKR pinout, TPS3801L30DCKR application, or TPS3801L30DCKR equivalent, this page delivers verified technical context, pin-level design meaning, real-world application mappings, and validated alternative options - all grounded in TI's SLVS219E specification and production data.
Technical Context
The TPS3801L30DCKR integrates a precision 1.14 V internal reference, comparator, oscillator-based timer, and push-pull output driver. Its fixed 2.64 V threshold (±2.5% over –40°C to +85°C) is derived from resistor-divider scaling of the internal reference, enabling stable detection without external components.
It asserts RESET low when VDD falls below 2.64 V and holds it active for 200 ms after VDD rises above threshold. Unlike TPS3801-01, it lacks a manual reset (MR) input - its pinout omits MR and uses SENSE tied internally to VDD, confirming fixed-supply monitoring functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports wide-input systems including 1.8 V, 2.5 V, 3.3 V, and 5 V rails. |
| Detection Threshold | 2.64 V (min 2.58 V, max 2.70 V) - factory-trimmed fixed threshold for reliable 3.0 V rail supervision. |
| Reset Delay Time | 200 ms (typical) - ensures sufficient hold time for DSP/microcontroller core and peripheral stabilization. |
| Supply Current | 12 µA (typical at VDD = 6 V) - ultra-low quiescent current suitable for battery-backed and always-on monitoring. |
| Output Type | Push-pull active-low RESET - eliminates need for external pull-up; drives loads up to 5 mA. |
| Threshold Accuracy | ±2.5% over –40°C to +85°C - enables robust operation without calibration in industrial environments. |
| Hysteresis | 35 mV - prevents oscillation during slow-rising/falling supply transitions near threshold. |
Pinout & Package
TPS3801L30DCKR is housed in a 5-pin SC-70 (SOT-323) package (TI package code DCK), measuring 2.15 mm × 1.40 mm × 1.10 mm max height. The package is RoHS-compliant, moisture-sensitivity Level-1, and optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Push-pull driver; sinks 5 mA; asserts low during undervoltage; no external pull-up required. |
| 2 - GND | Ground reference | Primary return path for internal circuitry and RESET output; must be low-impedance. |
| 3 - SENSE | Input sense node | Internally connected to VDD - confirms fixed-threshold configuration; not externally accessible. |
| 4 - VDD | Supply input | Power source and monitored rail; supplies internal reference, comparator, and timer (1.6–6 V). |
| 5 - GND | Second ground terminal | Provides additional grounding path; improves noise immunity and thermal dissipation in SC-70 layout. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.64 V threshold | Eliminates external resistor divider; reduces BOM count and layout area for 3.0 V system monitoring. |
| 200 ms reset delay | Guarantees full processor core and memory initialization before release; avoids premature boot failures. |
| 12 µA supply current | Enables continuous supervision in energy-constrained applications such as portable instrumentation and IoT edge nodes. |
| Push-pull RESET output | Drives microcontroller /RESET pins directly without pull-up resistor; simplifies schematic and improves noise margin. |
| SC-70 (DCK) package | 50% smaller than SOT-23-5; supports high-density routing and automated assembly in space-limited designs. |
Applications
| Industrial PLC I/O Module | Medical Patient Monitor |
|---|---|
Use Scenario: Monitors 3.3 V logic supply powering ARM Cortex-M4 MCU and isolated ADC interface. IC Role / Device Role / Timing Role: Fixed-threshold supervisor asserting RESET until 3.3 V rail stabilizes post-power-up and remains asserted during brownouts. Use Value: Prevents firmware execution under marginal voltage; ensures deterministic boot sequence and data integrity across 100+ sensor channels. |
Use Scenario: Supervises 2.8 V analog front-end supply feeding ECG amplifier chain and SAR ADC. IC Role / Device Role / Timing Role: Detects sub-threshold dips on critical analog rail; holds system in reset until stable, avoiding corrupted waveform capture. Use Value: Maintains clinical-grade signal fidelity by eliminating spurious resets during transient load switching or battery sag. |
| Wireless Sensor Node | Automotive Body Control Module |
Use Scenario: Watches 3.0 V supply generated by buck converter from 12 V vehicle battery in BLE-enabled environmental sensor. IC Role / Device Role / Timing Role: Provides 200 ms power-on reset and undervoltage lockout; no MR pin needed due to autonomous operation. Use Value: Extends battery life via ultra-low 12 µA quiescent current while guaranteeing reliable wake-from-sleep sequencing. |
Use Scenario: Monitors 5 V domain powering CAN transceiver and LIN interface in door module control unit. IC Role / Device Role / Timing Role: Fixed 2.64 V threshold detects early-stage rail collapse before CAN bus arbitration fails. Use Value: Enables fail-safe shutdown and diagnostic flagging prior to communication loss - meeting ISO 16750-2 pulse test requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3802L30DCKR | Same 2.64 V threshold but 380 ms reset delay; identical SC-70 package and pinout. | Used where longer reset hold time is required for complex multi-rail power sequencing. | Select when extended reset duration is needed; not drop-in - timing change affects boot timing budget. |
| TLV803EB30DBVR | 2.63 V threshold, 240 ms delay, open-drain output, 0.9 µA IQ, SOT-23-3 package (3 pins). | Requires external pull-up; lower IQ suits ultra-low-power sleep modes; smaller footprint but no dual-GND advantage. | Choose for battery longevity-critical designs; verify RESET drive strength and PCB layout compatibility. |
Compared with TPS3801L30DCKR, TPS3802L30DCKR extends reset timing without changing detection behavior, while TLV803EB30DBVR trades push-pull drive and dual-GND noise immunity for ultra-low current and reduced pin count - requiring redesign of reset net termination and layout.
Availability
TPS3801L30DCKR is available at Aetrix Electronics and suitable for industrial PLCs, medical patient monitors, wireless sensor nodes, and automotive body control modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS3801L30DCKR 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability supervisory circuits.
The TPS380x family was engineered for precision supply monitoring in DSP, microcontroller, and microprocessor systems - delivering factory-trimmed thresholds, predictable timing, and ultra-small packaging for space-constrained digital systems.
FAQ
What is the exact reset threshold voltage of TPS3801L30DCKR?
The TPS3801L30DCKR has a factory-programmed fixed detection threshold of 2.64 V, with a guaranteed range of 2.58 V (min) to 2.70 V (max) over –40°C to +85°C. This value is specified in the Electrical Characteristics table of TI's SLVS219E datasheet and applies directly to the TPS3801L30DCKR device without external components.
Does TPS3801L30DCKR include a manual reset (MR) input?
No, the TPS3801L30DCKR does not include a manual reset input. Per TI's functional block diagram and pinout documentation, the MR pin is omitted in the TPS3801L30 variant - only TPS3800-xx and TPS3802-xx devices (excluding TPS3801-01) feature MR. The TPS3801L30DCKR uses a fixed VDD-sense architecture with no external MR capability.
What package type and dimensions does TPS3801L30DCKR use?
TPS3801L30DCKR uses the SC-70 (SOT-323) package, designated DCK by Texas Instruments. Its dimensions are 2.15 mm × 1.40 mm × 1.10 mm maximum height, with 0.65 mm pin pitch. The package has two GND pins (pins 2 and 5) and is RoHS-compliant with Moisture Sensitivity Level 1.
Can TPS3801L30DCKR monitor a 3.3 V supply rail?
Yes, the TPS3801L30DCKR is specifically suited for monitoring 3.3 V rails. Its 2.64 V threshold provides ~20% hysteresis margin below nominal 3.3 V, ensuring reliable detection of brownout conditions while avoiding false triggers from normal ripple. It operates up to 6 V, fully covering 3.3 V system requirements.
What is the supply current consumption of TPS3801L30DCKR at 3.3 V?
At VDD = 3.3 V, the TPS3801L30DCKR draws 12 µA typical supply current (IDD), as confirmed in the Electrical Characteristics table of SLVS219E. This ultra-low quiescent current remains stable across temperature and input voltage, making it ideal for always-on supervision in power-sensitive applications.
TPS3801L30DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
TPS3801L30DCKR FAQ
1.How can I place an order for TPS3801L30DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3801L30DCKR 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 TPS3801L30DCKR reliable?
The price and inventory of TPS3801L30DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3801L30DCKR is usually 5 days.
3.What payment methods are accepted for TPS3801L30DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3801L30DCKR transactions.
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4.How is shipping managed for TPS3801L30DCKR?
TPS3801L30DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3801L30DCKR 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 TPS3801L30DCKR?
For technical support, including TPS3801L30DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3801L30DCKR requirements.
6.How does Aetrix verify that TPS3801L30DCKR is sourced from the original manufacturer or authorized distributors?
All TPS3801L30DCKR 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 TPS3801L30DCKR meets industry standards.
7.What is the process for return or replacement of TPS3801L30DCKR?
All TPS3801L30DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3801L30DCKR, 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 TPS3801L30DCKR part is unused and in its original packaging.
Return procedure for TPS3801L30DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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