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Texas Instruments 2T25-50QFRG4Q1
- Part No.:
- 2T25-50QFRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
2T25-50QFRG4Q1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
2T25-50QFRG4Q1 from Texas Instruments is an automotive-grade voltage supervisor IC with integrated watchdog timer, designed for power-on reset and supply monitoring in DSP/microcontroller systems. It features a fixed 5.0 V threshold (VIT− = 4.44–4.64 V), 200 ms reset delay, push-pull active-low RESET output, manual reset (MR) input, and operates from −40°C to 125°C.
For engineers reviewing the 2T25-50QFRG4Q1 datasheet, 2T25-50QFRG4Q1 pinout, 2T25-50QFRG4Q1 application, or 2T25-50QFRG4Q1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 5-V supply supervision capability, watchdog timeout of 1.6 s, low 15 µA supply current, and SOT-23-5 package compatibility with space-constrained automotive control units.
Technical Context
The 2T25-50QFRG4Q1 implements a precision bandgap-based voltage reference and comparator to monitor VDD against a fixed internal threshold. Its internal 200 ms delay timer ensures reliable system initialization after power-up or brownout recovery, while the watchdog logic responds to WDI transitions with a 1.6 s timeout - triggering RESET if no edge occurs within that window.
It supports manual reset assertion via MR pin with sub-microsecond propagation delay, and uses push-pull output stage capable of sinking ≥3 mA at VOL ≤ 0.4 V. All functions operate across 1.1 V to 5.5 V supply range, with hysteresis of 50 mV ensuring noise immunity on monitored rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.1 V to 5.5 V - enables operation during cold-crank automotive conditions and compatibility with 5 V logic domains. |
| Negative Threshold Voltage (VIT−) | 4.44–4.64 V at −40°C to 125°C - precisely targets 5 V rail supervision with guaranteed margin over nominal 5.0 V. |
| Reset Delay Time (td) | 120–300 ms - ensures stable microcontroller boot before release of active-low RESET signal. |
| Watchdog Timeout (ttout) | 0.9–2.5 s - provides robust fault detection window for safety-critical firmware execution monitoring. |
| Supply Current (IDD) | 15 µA typical - minimizes quiescent load on battery-backed or low-power automotive subsystems. |
| Output Type | Push-pull active-low RESET - eliminates need for external pull-up resistor and supports direct interface to MCU reset pins. |
| Hysteresis (Vhys) | 50 mV - prevents oscillation during slow-rising/falling supply transitions near threshold. |
Pinout & Package
2T25-50QFRG4Q1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density automotive PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low reset output | Push-pull driver asserts low during power-up, brownout, or watchdog timeout; releases high after delay. |
| 2: GND | Ground reference | Primary return path for internal circuitry and output sink current; must be low-impedance connection. |
| 3: MR | Manual reset input | Asynchronous active-low trigger: forces RESET low when pulled <0.3×VDD; internal 52 kΩ pullup if left open. |
| 4: WDI | Watchdog timer input | Edge-sensitive input (rising/falling); resets watchdog timer on each transition; high-impedance disables timer. |
| 5: VDD | Supply and monitored rail | Powers device and serves as input to voltage monitor; requires local 100 nF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to 125°C ambient operation and automotive ESD robustness (HBM ±2000 V, CDM ±750 V). |
| Fixed 5.0 V threshold supervision | Eliminates external resistor divider; guarantees VIT− = 4.44–4.64 V across full temperature range. |
| Integrated 1.6 s watchdog timer | Monitors firmware liveness without external timing components; configurable via WDI pin transitions. |
| 200 ms power-on reset delay | Ensures stable clock and supply settling before releasing MCU from reset state. |
| Low 15 µA quiescent current | Reduces parasitic drain on vehicle battery during sleep modes and extended key-off periods. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
Use Scenario: Monitors 5 V power rail supplying MCU and CAN transceiver in engine management system. IC Role / Device Role / Timing Role: Generates power-on reset pulse and detects undervoltage faults during cranking; asserts watchdog reset if main processor hangs. Use Value: Prevents unsafe ECU operation under marginal supply conditions and enforces deterministic recovery after software lockup. |
Use Scenario: Supervises 5 V supply feeding image sensor, ISP, and video encoder in rear-view camera module. IC Role / Device Role / Timing Role: Ensures clean boot sequence and continuous health check of vision processing firmware via WDI interface. Use Value: Eliminates need for discrete RC reset circuits and adds fail-safe restart capability without host intervention. |
| Automotive Body Control Module (BCM) | Electric Power Steering (EPS) Controller |
Use Scenario: Provides reset and supply monitoring for 5 V domain powering door lock actuators and LIN transceivers. IC Role / Device Role / Timing Role: Delivers 200 ms reset hold time and manual reset override via body controller command. Use Value: Enables synchronized subsystem reset during wake-up events and supports diagnostic service-mode entry. |
Use Scenario: Supervises 5 V rail for torque sensor interface and motor control MCU in EPS system. IC Role / Device Role / Timing Role: Performs dual role: power integrity check at startup and runtime watchdog supervision of safety-critical firmware. Use Value: Meets ASIL-B functional safety requirements by providing independent reset generation and fault detection path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3825-50-Q1 | Includes dual active-low and active-high RESET outputs; identical threshold, delay, and watchdog specs. | Required where both reset polarities needed simultaneously (e.g., legacy + modern MCU interfaces). | Select when system design mandates separate active-high enable and active-low reset signals. |
| TPS3828-50-Q1 | Replaces push-pull RESET with open-drain output; same threshold, delay, and watchdog behavior. | Suitable for wired-OR reset buses or level-shifting applications requiring external pull-up flexibility. | Choose when shared reset bus architecture or I²C-compatible voltage translation is required. |
Compared with TPS3825-50-Q1 and TPS3828-50-Q1, the 2T25-50QFRG4Q1 offers optimal cost and board space efficiency for single-polarity reset applications, retaining full AEC-Q100 compliance and watchdog functionality without added output complexity.
Availability
2T25-50QFRG4Q1 is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and body electronics requiring stable component supply with AEC-Q100 traceability and long-term production support.
Supply support for 2T25-50QFRG4Q1 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 and embedded processing technologies, with deep expertise in automotive-grade IC design and manufacturing.
The TPS382x-xx-Q1 product line was developed specifically for automotive power management and system supervision, delivering AEC-Q100 qualified voltage monitors with integrated watchdog timers for DSP, MCU, and microprocessor platforms.
FAQ
What is the exact supply voltage threshold monitored by the 2T25-50QFRG4Q1?
The 2T25-50QFRG4Q1 monitors a fixed negative-going input threshold voltage (VIT−) of 4.44 V minimum to 4.64 V maximum across −40°C to 125°C, making it specifically suited for 5 V rail supervision. This threshold is factory-trimmed and does not require external components. The 2T25-50QFRG4Q1 achieves this using an internal precision voltage divider and bandgap reference, ensuring consistent performance without calibration.
Does the 2T25-50QFRG4Q1 include a watchdog timer, and what is its timeout period?
Yes, the 2T25-50QFRG4Q1 includes a watchdog timer with a nominal timeout period of 1.6 s (range 0.9–2.5 s). The timer resets on any rising or falling edge at the WDI pin and triggers RESET if no edge occurs within the timeout window. This feature is integral to the 2T25-50QFRG4Q1's function as a safety monitor for automotive microcontrollers, and no external components are needed to configure it.
What package type and pin count does the 2T25-50QFRG4Q1 use?
The 2T25-50QFRG4Q1 uses a 5-pin SOT-23 (DBV) package with nominal body dimensions of 2.90 mm × 1.60 mm. Its pinout is standardized across the TPS382x-xx-Q1 family: Pin 1 = RESET (active-low), Pin 2 = GND, Pin 3 = MR, Pin 4 = WDI, Pin 5 = VDD. This compact footprint supports high-density automotive PCB layouts and automated surface-mount assembly.
How does the manual reset (MR) function work on the 2T25-50QFRG4Q1?
The MR pin on the 2T25-50QFRG4Q1 is an asynchronous active-low input that forces RESET low regardless of VDD level or watchdog state. When MR is pulled below 0.3×VDD, RESET asserts immediately and remains low for the full 200 ms delay after MR returns high. An internal 52 kΩ pullup resistor holds MR high when unconnected, so no external resistor is required unless noise immunity demands stronger biasing.
Is the 2T25-50QFRG4Q1 qualified for automotive applications, and what standards does it meet?
Yes, the 2T25-50QFRG4Q1 is AEC-Q100 qualified for Automotive Grade 1 (−40°C to 125°C ambient), with HBM ESD rating of ±2000 V and CDM rating of ±750 V. It meets all stress test requirements for automotive integrated circuits, including thermal cycling, humidity bias, and accelerated life testing. This qualification is documented in the official TI datasheet SGLS143C and applies directly to the 2T25-50QFRG4Q1 device.
2T25-50QFRG4Q1 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:
- 4.55V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 120ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
2T25-50QFRG4Q1 FAQ
1.How can I place an order for 2T25-50QFRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2T25-50QFRG4Q1 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 2T25-50QFRG4Q1 reliable?
The price and inventory of 2T25-50QFRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2T25-50QFRG4Q1 is usually 5 days.
3.What payment methods are accepted for 2T25-50QFRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2T25-50QFRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2T25-50QFRG4Q1?
2T25-50QFRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2T25-50QFRG4Q1 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 2T25-50QFRG4Q1?
For technical support, including 2T25-50QFRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2T25-50QFRG4Q1 requirements.
6.How does Aetrix verify that 2T25-50QFRG4Q1 is sourced from the original manufacturer or authorized distributors?
All 2T25-50QFRG4Q1 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 2T25-50QFRG4Q1 meets industry standards.
7.What is the process for return or replacement of 2T25-50QFRG4Q1?
All 2T25-50QFRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with 2T25-50QFRG4Q1, 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 2T25-50QFRG4Q1 part is unused and in its original packaging.
Return procedure for 2T25-50QFRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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