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Texas Instruments TPS3801K33DCKRG4
- Part No.:
- TPS3801K33DCKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3801K33DCKRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,592
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Product details
Overview
TPS3801K33DCKRG4 from Texas Instruments is a fixed-threshold voltage supervisor IC with 2.93 V detection, 200 ms reset delay, push-pull RESET output, and SC-70 (DCK) 5-pin package - used for power-on reset supervision in microcontroller-based systems requiring precise supply monitoring.
For engineers reviewing the TPS3801K33DCKRG4 datasheet, TPS3801K33DCKRG4 pinout, TPS3801K33DCKRG4 application, or TPS3801K33DCKRG4 equivalent, this page delivers verified electrical parameters, thermal operating range, threshold accuracy, timing behavior, and real-world use context for reliable system initialization design.
Technical Context
The TPS3801K33DCKRG4 integrates a precision 1.14 V internal reference, comparator, oscillator-based timer, and push-pull output driver to generate a clean, factory-programmed 200 ms RESET pulse when VDD falls below 2.93 V (±2.5% over –40°C to +85°C). It operates without external components beyond a recommended 0.1 µF bypass capacitor.
No manual reset (MR) input is present - unlike most TPS380x family members - making it a dedicated fixed-delay, fixed-threshold supervisory device optimized for simplicity and board space reduction in low-voltage embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports operation across common logic rails including 3.3 V and 5 V systems. |
| Threshold Voltage | 2.93 V (min 2.87 V, max 2.99 V) - enables reliable detection of 3.3 V rail brownout with ±2.5% accuracy. |
| Reset Delay Time | 200 ms (typical) - ensures stable processor initialization after power stabilization, per factory programming. |
| Output Type | Push-pull active-low RESET - eliminates need for external pull-up resistor and reduces BOM count. |
| Supply Current | 12 µA (typical at VDD = 2 V) - ultra-low quiescent current suitable for battery-powered applications. |
| Operating Temperature | –40°C to +85°C - fully specified for industrial and automotive-adjacent environments. |
| Threshold Hysteresis | 40 mV - prevents oscillation during slow-rising/falling supply transitions near threshold. |
Pinout & Package
TPS3801K33DCKRG4 uses the SC-70 (DCK) 5-pin surface-mount package (2.41 mm × 1.2 mm × 1.1 mm), optimized for space-constrained PCB layouts. Pin 1 is marked by an index area on the top-side silkscreen.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output - asserts low during undervoltage condition and remains low for full 200 ms after recovery. |
| 2 | GND | Ground reference for internal circuitry and output stage - must be connected to system ground plane for stable operation. |
| 3 | VDD | Primary power supply input - monitored for threshold violation; powers internal reference and logic. |
| 4 | GND | Second ground terminal - improves noise immunity and thermal performance; requires low-impedance connection to same ground net as Pin 2. |
| 5 | NC | No-connect - internally unused; left floating or tied to GND per layout best practice (no functional impact). |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.93 V threshold | Enables direct monitoring of 3.3 V supplies without external resistor divider, reducing component count and layout complexity. |
| 200 ms factory-programmed delay | Guarantees sufficient hold time for microcontroller core and peripherals to complete power-up sequencing without external timing components. |
| Push-pull RESET output | Drives loads up to 5 mA low / –5 mA high - compatible with standard CMOS inputs and eliminates external pull-up resistor. |
| Ultra-small SC-70 package | 50% smaller footprint than SOT-23-5 - ideal for wearables, IoT nodes, and compact industrial controllers where board area is critical. |
| 2.5% threshold accuracy over temperature | Ensures consistent reset assertion across –40°C to +85°C without calibration, supporting robust field reliability. |
Applications
| Industrial PLC I/O Module | Portable Medical Sensor Node |
|---|---|
Use Scenario: Power rail supervision during cold-start and brownout events in DIN-rail mounted programmable logic controller modules. IC Role / Device Role / Timing Role: Fixed-threshold supervisor asserting RESET until 3.3 V rail stabilizes for 200 ms, enabling deterministic firmware boot. Use Value: Prevents corrupted register states or spurious I/O activation during marginal supply conditions, improving system safety compliance. |
Use Scenario: Battery-powered ECG patch requiring guaranteed MCU reset upon Li-ion discharge below 3.0 V. IC Role / Device Role / Timing Role: Monitors main 3.3 V LDO output and triggers controlled shutdown sequence via RESET signal to microcontroller. Use Value: Extends usable battery life by avoiding premature resets while ensuring reliable restart after recharge. |
| Automotive Body Control Module (BCM) | Smart Home Hub Power Management |
Use Scenario: Supervision of 3.3 V domain powering CAN transceiver and microcontroller in non-safety-critical body electronics. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation when vehicle battery dips during cranking or load dump recovery. Use Value: Maintains deterministic state recovery without software intervention, reducing diagnostic trouble code (DTC) false positives. |
Use Scenario: Ensuring clean boot of dual-core application processor after AC/DC adapter reconnection or transient dropout. IC Role / Device Role / Timing Role: Generates synchronized 200 ms RESET pulse to both processor and PMIC, preventing race conditions during power-up. Use Value: Eliminates boot hangs and firmware corruption caused by asynchronous power sequencing across multiple voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3801L30DCKR | 2.64 V threshold (vs. 2.93 V); otherwise identical timing, package, and architecture. | Suitable for 2.8 V or 3.0 V supply rails where tighter margin is required before reset assertion. | Select when system brownout threshold must trigger earlier than 2.93 V - e.g., to protect 2.8 V I/O interfaces. |
| TPS3802K33DCKR | Same 2.93 V threshold but 380 ms reset delay (vs. 200 ms); identical pinout and electrical specs. | Used where longer reset hold time is needed for complex processors or multi-rail power sequencing. | Choose when extended reset duration is required - e.g., for FPGA configuration or multi-stage DC-DC startup coordination. |
Compared with TPS3801K33DCKRG4, TPS3801L30DCKR offers lower threshold for earlier fault response, while TPS3802K33DCKR extends delay for more demanding sequencing - both retain SC-70 compatibility and 2.5% accuracy, enabling drop-in replacement with only timing/threshold adjustment.
Availability
TPS3801K33DCKRG4 is available at Aetrix Electronics and suitable for industrial control systems, portable medical devices, automotive body electronics, and smart home hubs requiring stable component supply and long-term manufacturability.
Supply support for TPS3801K33DCKRG4 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 connectivity technologies, with decades of expertise in power management and system supervision ICs.
The TPS380x family was designed specifically for ultra-small, low-power supply voltage supervision in space- and energy-constrained embedded systems - emphasizing precision, integration, and industrial-grade reliability.
FAQ
What is the exact reset threshold voltage of the TPS3801K33DCKRG4?
The TPS3801K33DCKRG4 has a nominal reset threshold of 2.93 V, with a guaranteed range of 2.87 V to 2.99 V over –40°C to +85°C. This 2.5% accuracy is achieved using an internal 1.14 V reference and trimmed comparator, eliminating need for external calibration.
Does the TPS3801K33DCKRG4 include a manual reset (MR) input?
No, the TPS3801K33DCKRG4 does not include a manual reset input. It is a fixed-function variant within the TPS380x family - unlike TPS3801-01 or TPS3801E18 - and relies solely on VDD monitoring for reset generation.
What package type and dimensions does the TPS3801K33DCKRG4 use?
The TPS3801K33DCKRG4 uses the SC-70 (DCK) 5-pin package: 2.41 mm × 1.2 mm footprint, 1.1 mm maximum height. Pin 1 is located at the index corner; the package includes two GND pins (Pins 2 and 4) for improved thermal and noise performance.
Can the TPS3801K33DCKRG4 be used with a 5 V supply rail?
Yes, the TPS3801K33DCKRG4 supports VDD from 2 V to 6 V, making it fully compatible with 5 V systems. Its 2.93 V threshold remains valid regardless of VDD level, allowing supervision of 3.3 V domains powered from higher rails via LDOs or regulators.
What is the typical supply current consumption of the TPS3801K33DCKRG4?
The TPS3801K33DCKRG4 draws 12 µA typical supply current at VDD = 2 V and 20 µA at VDD = 6 V (over temperature). This ultra-low quiescent current supports multi-year battery life in always-on sensor and monitoring applications.
TPS3801K33DCKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
TPS3801K33DCKRG4 FAQ
1.How can I place an order for TPS3801K33DCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3801K33DCKRG4 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 TPS3801K33DCKRG4 reliable?
The price and inventory of TPS3801K33DCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3801K33DCKRG4 is usually 5 days.
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TPS3801K33DCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3801K33DCKRG4 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 TPS3801K33DCKRG4?
For technical support, including TPS3801K33DCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3801K33DCKRG4 requirements.
6.How does Aetrix verify that TPS3801K33DCKRG4 is sourced from the original manufacturer or authorized distributors?
All TPS3801K33DCKRG4 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 TPS3801K33DCKRG4 meets industry standards.
7.What is the process for return or replacement of TPS3801K33DCKRG4?
All TPS3801K33DCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3801K33DCKRG4, 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 TPS3801K33DCKRG4 part is unused and in its original packaging.
Return procedure for TPS3801K33DCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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