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Texas Instruments TPS3801J25DCKR
- Part No.:
- TPS3801J25DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3801J25DCKR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,196
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Product details
Overview
TPS3801J25DCKR from Texas Instruments is a fixed-threshold voltage supervisor IC designed for power-on reset and supply monitoring in low-voltage embedded systems. It features a 2.25 V ±2.5% detection threshold, 200 ms factory-programmed reset delay, push-pull RESET output, and operates from 2 V to 6 V supply with 12 µA typical quiescent current. It is used in microcontroller-based power sequencing for portable instrumentation and battery-powered edge nodes.
For engineers reviewing the TPS3801J25DCKR datasheet, TPS3801J25DCKR pinout, TPS3801J25DCKR application, or TPS3801J25DCKR equivalent, this page delivers verified electrical parameters, SC-70 package layout, functional role in reset assertion timing, and validated alternative parts for supply voltage supervision in space-constrained designs.
Technical Context
The TPS3801J25DCKR integrates a precision bandgap reference (1.14 V) and comparator to monitor VDD directly-no external resistor divider required. Its internal timer asserts RESET low for exactly 200 ms after VDD rises above 2.25 V, ensuring reliable processor initialization.
Unlike adjustable variants (e.g., TPS3801-01), this device lacks a manual reset (MR) input and SENSE pin; its only inputs are VDD and GND. The push-pull output drives RESET without external pull-up, supporting fast rise/fall times under 100 ns at CL = 50 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports direct connection to 2.5 V, 3.3 V, and 5 V rails without level shifting |
| Reset Threshold | 2.25 V ±2.5% - factory-trimmed for stable brownout detection across –40°C to +85°C |
| Reset Delay Time | 200 ms - fixed internal timer ensures consistent reset pulse width independent of external components |
| Quiescent Current | 12 µA at VDD = 6 V - enables ultra-low-power operation in always-on monitoring circuits |
| Output Type | Push-pull active-low RESET - eliminates need for external pull-up resistor and reduces BOM count |
| Threshold Hysteresis | 30 mV - prevents oscillation during slow-rising or noisy supply transitions |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive cabin applications |
Pinout & Package
TPS3801J25DCKR uses the SC-70 (DCK) 5-pin surface-mount package (2.41 mm × 1.2 mm × 0.9 mm), optimized for high-density 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; sinks up to 5 mA, drives logic-compatible signals directly |
| 2 | GND | Analog ground reference; must be connected to system ground plane for accurate threshold stability |
| 3 | VDD | Primary supply input; monitored voltage source; bypass capacitor (0.1 µF ceramic) required near pin |
| 4 | GND | Second ground terminal; improves thermal dissipation and reduces ground bounce in high-speed switching |
| 5 | NC | No-connect; internally unconnected; must remain floating or tied to GND per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Precision Fixed Threshold | 2.25 V with ±2.5% total accuracy over temperature and supply - eliminates calibration overhead in production test |
| Ultra-Low Supply Current | 12 µA max at 6 V - extends battery life in always-on supervisory functions for IoT endpoints |
| Integrated Reset Timer | 200 ms factory-programmed delay - guarantees sufficient hold time for DSP/microcontroller core stabilization |
| Push-Pull Output Stage | Drives RESET directly without external pull-up - reduces component count and board area in compact designs |
| SC-70 Package Footprint | 2.41 mm × 1.2 mm - occupies ~45% less area than SOT-23-5, enabling placement near processor power pins |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 3.3 V LDO output powering an ARM Cortex-M4 MCU and analog front-end in a wireless temperature/humidity sensor. IC Role / Device Role / Timing Role: Asserts RESET until VDD stabilizes above 2.25 V and holds it low for 200 ms to guarantee full clock lock and register initialization. Use Value: Prevents firmware crash due to premature CPU execution; eliminates need for discrete RC timing network. | Use Scenario: Supervises dual-rail 2.5 V/3.3 V supply in a handheld ECG acquisition unit powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Detects brownout on main 2.5 V rail and triggers controlled shutdown sequence via MCU interrupt before data corruption occurs. Use Value: Ensures clinical-grade data integrity by enforcing deterministic reset behavior under battery sag conditions. |
| Smart Meter Communication Module | Automotive Body Control Unit |
Use Scenario: Provides power-good signaling for a sub-1G RF transceiver (e.g., TI CC1312) operating from a 2.5 V buck converter in AMI infrastructure. IC Role / Device Role / Timing Role: Generates clean, glitch-free RESET pulse synchronized to 2.5 V rail ramp-up, enabling reliable radio boot sequence. Use Value: Reduces field failure rate caused by marginal power sequencing in cold-temperature deployments. | Use Scenario: Monitors 5 V system rail feeding CAN transceivers and microcontroller peripherals in door module electronics. IC Role / Device Role / Timing Role: Detects undervoltage during load-dump recovery and asserts RESET to prevent CAN bus arbitration errors. Use Value: Improves EMC robustness by eliminating spurious resets during transient events per ISO 7637-2. |
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, same 200 ms delay, identical SC-70 package and pinout | Used where higher trip point is needed to tolerate 3.3 V rail tolerance or ripple margin | Select when system brownout threshold must exceed 2.5 V to avoid false resets on noisy supplies |
| TPS3800G27DCKR | 2.5 V threshold, 95 ms delay, same SC-70 package and pinout | Preferred for faster-booting microcontrollers requiring shorter reset hold time | Choose when 200 ms delay is excessive and 2.5 V detection aligns with system VDD nominal |
Compared with TPS3801J25DCKR, TPS3801L30DCKR raises the detection threshold for improved noise immunity, while TPS3800G27DCKR shortens the reset pulse for latency-sensitive applications-both retain identical footprint and interface compatibility.
Availability
TPS3801J25DCKR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart meter communication modules, and automotive body control units requiring stable component supply and long-term lifecycle support.
Supply support for TPS3801J25DCKR 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 experience in high-reliability industrial and automotive IC design.
The TPS380x family was engineered specifically for ultra-small, low-power supply voltage supervision in space-constrained, battery-operated, and processor-centric systems-emphasizing precision, integration, and minimal external component count.
FAQ
What is the exact reset threshold voltage of the TPS3801J25DCKR?
The TPS3801J25DCKR has a factory-trimmed reset threshold of 2.25 V, with a guaranteed tolerance of ±2.5% over the full –40°C to +85°C operating temperature range. This value is specified in the Electrical Characteristics table under "Power-up reset voltage" for the TPS380xJ25 variant, and applies directly to the TPS3801J25DCKR device.
Does the TPS3801J25DCKR include a manual reset (MR) input?
No, the TPS3801J25DCKR does not include a manual reset input. Per the datasheet Functional Block Diagram and Feature List, MR functionality is excluded from the TPS3801J25 variant. Only the TPS3801-01 and certain other members of the TPS380x family incorporate MR; the TPS3801J25DCKR relies solely on VDD monitoring for reset generation.
What is the recommended bypass capacitor for the TPS3801J25DCKR VDD pin?
A 0.1 µF ceramic capacitor is recommended for the VDD pin of the TPS3801J25DCKR, placed as close as possible to the device. This is explicitly stated in the datasheet's "Electrical Characteristics" footnote (3) and "Recommended Operating Conditions" section to ensure stable reference operation and minimize noise-induced threshold instability.
Can the TPS3801J25DCKR be used with a 1.8 V supply rail?
No, the TPS3801J25DCKR cannot reliably supervise a 1.8 V rail because its minimum operating supply voltage is 2 V, and its 2.25 V threshold exceeds 1.8 V. For 1.8 V systems, TI recommends the TPS3801E18DCKR (1.71 V threshold) or TPS3801-01DCKR (adjustable via external divider), both in the same SC-70 package.
Is the TPS3801J25DCKR pin-compatible with other devices in the TPS380x family?
Yes, the TPS3801J25DCKR shares the same SC-70 (DCK) 5-pin package and pinout with all TPS380x variants listed in the "Available Options" table-including TPS3801L30DCKR, TPS3800G27DCKR, and TPS3801E18DCKR-enabling drop-in replacement within the same footprint when threshold and delay requirements align.
TPS3801J25DCKR 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:
- 2.25V
- 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
TPS3801J25DCKR FAQ
1.How can I place an order for TPS3801J25DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3801J25DCKR 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 TPS3801J25DCKR reliable?
The price and inventory of TPS3801J25DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3801J25DCKR is usually 5 days.
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Once your TPS3801J25DCKR 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 TPS3801J25DCKR?
For technical support, including TPS3801J25DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3801J25DCKR requirements.
6.How does Aetrix verify that TPS3801J25DCKR is sourced from the original manufacturer or authorized distributors?
All TPS3801J25DCKR 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 TPS3801J25DCKR meets industry standards.
7.What is the process for return or replacement of TPS3801J25DCKR?
All TPS3801J25DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3801J25DCKR, 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 TPS3801J25DCKR part is unused and in its original packaging.
Return procedure for TPS3801J25DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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