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Texas Instruments TPS3801T50DCKRG4
- Part No.:
- TPS3801T50DCKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3801T50DCKRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
TPS3801T50DCKRG4 from Texas Instruments is a fixed-threshold voltage supervisor IC with 4.00 V detection, 25 ms reset delay, push-pull RESET output, and SC-70 (DCK) 5-pin package. It monitors VDD supply lines in microcontroller-based systems to ensure reliable power-on initialization and brownout protection during battery-powered operation.
For engineers reviewing the TPS3801T50DCKRG4 datasheet, TPS3801T50DCKRG4 pinout, TPS3801T50DCKRG4 application, or TPS3801T50DCKRG4 equivalent, key selection criteria include its precise 4.00 V ±2% threshold, ultra-low 9 µA supply current at 1.6 V, 25 ms factory-programmed delay, push-pull output drive capability, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The TPS3801T50DCKRG4 uses an internal precision reference (1.14 V) and resistor divider to set a fixed 4.00 V detection threshold on the VDD pin. Its reset logic asserts a low-active push-pull RESET signal when VDD falls below VIT– (3.92 V min), holding it active for 25 ms after VDD rises above the threshold.
No manual reset (MR) input is provided-this variant excludes MR functionality per the TPS3801-01 family differentiation. The device operates without external components, requiring only a 0.1 µF bypass capacitor on VDD for stable threshold performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports wide-input rail monitoring including 3.3 V, 5 V, and battery-backed supplies |
| Detection Threshold | 4.00 V ±2% - factory-trimmed fixed threshold ensures accurate 5 V rail supervision without external resistors |
| Reset Delay Time | 25 ms (typ) - deterministic, factory-programmed timing eliminates need for external RC network |
| Supply Current | 9 µA (typ at 1.6 V) - enables multi-year operation in always-on battery-powered systems |
| Output Type | Push-pull RESET - drives high/low directly without external pull-up; supports 5 mA sink / –5 mA source |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood ambient conditions |
| Threshold Hysteresis | 60 mV - prevents chatter near trip point during slow-rising/falling supply transitions |
Pinout & Package
TPS3801T50DCKRG4 is housed in a 5-pin SC-70 (DCK) package-1.85 mm × 1.35 mm × 1.1 mm body, 0.65 mm pitch, gull-wing leads. This ultra-small outline transistor (SOT) footprint occupies ~50% less board area than standard SOT-23-5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Push-pull driver capable of sinking 5 mA or sourcing –5 mA; asserts low during VDD undervoltage or power-up |
| 2 - GND | Ground reference | Primary return path for internal circuitry and RESET output; must be connected to system ground plane |
| 3 - SENSE | Not connected (NC) | No internal connection; left floating or tied to GND per TI layout guidance for noise immunity |
| 4 - VDD | Supply and sense input | Monitored supply rail; powers internal circuitry and serves as detection node for 4.00 V threshold |
| 5 - GND | Ground reference | Second ground terminal for improved thermal and EMI performance; must be tied to same ground net as Pin 2 |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.00 V threshold | Eliminates external resistor divider, reducing BOM count and layout sensitivity while maintaining ±2% accuracy over temperature |
| 25 ms reset delay | Guarantees sufficient hold time for processor core and peripherals to fully initialize before release from reset |
| Ultra-low 9 µA supply current | Extends battery life in portable equipment; enables use in energy-harvesting and IoT edge nodes |
| Push-pull RESET output | Drives microcontroller reset pins directly without external pull-up resistor, simplifying schematic and improving noise immunity |
| SC-70 (DCK) package | Enables high-density PCB layouts in space-constrained applications such as wearables and sensor modules |
Applications
| Industrial PLC I/O Modules | Portable Medical Monitors |
|---|---|
Use Scenario: Supervises 5 V power rail feeding FPGA configuration and analog front-end in battery-backed field instruments. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until 5 V rail stabilizes post-battery insertion or cold start. Use Value: Prevents metastability and configuration corruption by enforcing minimum 25 ms reset assertion during rail ramp-up. |
Use Scenario: Monitors main Li-ion battery output (4.2 V → 3.0 V discharge) in handheld ECG devices with low-power MCU sleep modes. IC Role / Device Role / Timing Role: Detects 4.00 V brownout to trigger graceful shutdown before data loss or memory corruption. Use Value: Leverages 60 mV hysteresis and 9 µA quiescent current to extend usable battery runtime while ensuring deterministic fault response. |
| Automotive Body Control Units | Smart Home Sensor Hubs |
Use Scenario: Validates 5 V supply derived from vehicle battery (9–16 V) via DC/DC converter in door module ECUs. IC Role / Device Role / Timing Role: Fixed-threshold supervisor providing fail-safe reset during load-dump or cranking-induced dips. Use Value: Operates reliably across –40°C to +85°C ambient and withstands 7 V absolute max VDD stress without damage. |
Use Scenario: Ensures clean boot of ARM Cortex-M4 in Zigbee/Z-Wave gateway after USB power restoration or wall adapter plug-in. IC Role / Device Role / Timing Role: Generates synchronized reset pulse to MCU and RF transceiver upon 5 V rail stabilization. Use Value: Push-pull output eliminates external pull-up, reducing component count and enabling single-layer PCB routing in cost-sensitive consumer designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3801I50DCKR | 4.55 V threshold (±2%), same 25 ms delay, identical SC-70 package | Designed for higher-voltage 5 V systems with tighter tolerance margins; not suitable for 4.0 V nominal rails | Select when supervising 5 V supplies with headroom for ripple; verify VIT– (4.45 V min) exceeds worst-case rail sag |
| TLV803EB33DBVR | 3.3 V threshold, 200 ms delay, SOT-23-5 package, 0.5 µA IQ | Lower threshold and longer delay; optimized for ultra-low-power microcontrollers with extended wake-up sequences | Choose for sub-1 µA systems where 3.3 V rail supervision suffices and longer reset hold time is acceptable |
Compared with TPS3801I50DCKR and TLV803EB33DBVR, the TPS3801T50DCKRG4 uniquely balances 4.00 V precision detection, 25 ms timing, and ultra-small SC-70 packaging-making it optimal for space-constrained 5 V embedded systems requiring fast, deterministic reset behavior without design compromises.
Availability
TPS3801T50DCKRG4 is available at Aetrix Electronics and suitable for industrial control systems, portable medical instrumentation, automotive body electronics, and smart home sensor hubs requiring stable component supply and long-term lifecycle support.
Supply support for TPS3801T50DCKRG4 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.
The TPS380x family was designed specifically for robust, low-footprint supply monitoring in DSP, microcontroller, and microprocessor systems-prioritizing accuracy, low quiescent current, and factory-programmed timing.
FAQ
What is the exact detection threshold voltage of the TPS3801T50DCKRG4?
The TPS3801T50DCKRG4 has a factory-trimmed fixed detection threshold of 4.00 V with ±2% accuracy over –40°C to +85°C. Electrical characteristics specify VIT– (negative-going threshold) as 3.92 V (min), 4.00 V (typ), and 4.08 V (max), confirmed in the SLVS219E datasheet Table 1.
Does the TPS3801T50DCKRG4 include a manual reset (MR) input?
No, the TPS3801T50DCKRG4 does not include a manual reset input. Per the TPS380x family documentation, only the TPS3801-01 variant includes MR functionality; all other members-including TPS3801T50DCKRG4-omit MR and rely solely on VDD monitoring.
What is the reset delay time for the TPS3801T50DCKRG4, and is it adjustable?
The TPS3801T50DCKRG4 features a fixed 25 ms reset recovery delay time (td), specified as 15 ms (min), 25 ms (typ), and 35 ms (max) in the Switching Characteristics table. This delay is factory-programmed and non-adjustable-no external components are required or supported.
What package type and pin configuration does the TPS3801T50DCKRG4 use?
The TPS3801T50DCKRG4 uses the SC-70 (DCK) 5-pin package with gull-wing leads. Pin 1 is RESET, Pin 2 is GND, Pin 3 is NC (not internally connected), Pin 4 is VDD, and Pin 5 is GND. This matches the top-view DCK package drawing in the SLVS219E datasheet.
Can the TPS3801T50DCKRG4 monitor a 3.3 V supply rail?
No-the TPS3801T50DCKRG4 is specified for 4.00 V detection and requires VDD ≥1.6 V to operate. Monitoring a 3.3 V rail would result in permanent RESET assertion since 3.3 V < 3.92 V (minimum VIT–). For 3.3 V supervision, consider TPS3801K33DCKR (2.93 V threshold) or TPS3801L30DCKR (2.64 V).
TPS3801T50DCKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 4V
- 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
TPS3801T50DCKRG4 FAQ
1.How can I place an order for TPS3801T50DCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3801T50DCKRG4 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 TPS3801T50DCKRG4 reliable?
The price and inventory of TPS3801T50DCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3801T50DCKRG4 is usually 5 days.
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TPS3801T50DCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3801T50DCKRG4 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 TPS3801T50DCKRG4?
For technical support, including TPS3801T50DCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3801T50DCKRG4 requirements.
6.How does Aetrix verify that TPS3801T50DCKRG4 is sourced from the original manufacturer or authorized distributors?
All TPS3801T50DCKRG4 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 TPS3801T50DCKRG4 meets industry standards.
7.What is the process for return or replacement of TPS3801T50DCKRG4?
All TPS3801T50DCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3801T50DCKRG4, 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 TPS3801T50DCKRG4 part is unused and in its original packaging.
Return procedure for TPS3801T50DCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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