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Texas Instruments TPS3837J25QDBVRQ1
- Part No.:
- TPS3837J25QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3837J25QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,076
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Product details
Overview
TPS3837J25QDBVRQ1 from Texas Instruments is an automotive-grade nanosupervisory circuit with active-high push-pull RESET output, 2.25 V precision voltage threshold (±1.5% over −40°C to 125°C), 220 nA typical supply current, and selectable 10 ms / 200 ms reset delay via CT pin. It monitors power rails in low-power microcontroller systems requiring reliable power-on reset and brownout detection.
For engineers reviewing the TPS3837J25QDBVRQ1 datasheet, TPS3837J25QDBVRQ1 pinout, TPS3837J25QDBVRQ1 application, or TPS3837J25QDBVRQ1 equivalent, this device delivers ultra-low quiescent current, AEC-Q100 qualified operation, precise threshold stability across temperature, and manual reset capability - critical for battery-powered automotive ECUs and industrial embedded controllers.
Technical Context
The TPS3837J25QDBVRQ1 implements a band-gap referenced voltage comparator with internal hysteresis (40 mV) and a refresh timer that initiates after VDD exceeds the 2.25 V threshold. Its active-high push-pull RESET output drives logic-high during normal operation and asserts low upon undervoltage or manual reset.
Delay timing is controlled by the CT pin: grounded for 10 ms typical delay, tied to VDD for 200 ms typical delay. The MR input accepts TTL/CMOS-compatible signals and features an internal 30 kΩ pullup, enabling direct connection to GND for manual reset assertion without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.25 V ±1.5% (ensures reliable detection of 2.5 V rail dropout with margin) |
| Supply Current (IDD) | 220 nA typical at VDD > VIT (enables multi-year battery life in always-on monitoring) |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - configurable without external RC network |
| Output Type | Active-high push-pull RESET (drives high-impedance load directly; no external pullup required) |
| Operating Temperature | −40°C to +125°C (AEC-Q100 Grade 1 qualified for under-hood automotive use) |
| ESD Rating | 2000 V HBM, 200 V MM (robust handling in automotive manufacturing environments) |
| Input Hysteresis | 40 mV (prevents oscillation during slow-rising or noisy supply transitions) |
Pinout & Package
TPS3837J25QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package, 2.9 mm × 1.6 mm × 1.45 mm, RoHS-compliant, tape-and-reel (3000 pcs/reel), MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CT | Delay Configuration Input | Connect to GND for 10 ms reset delay; connect to VDD for 200 ms delay - no external components needed |
| 2 - GND | Ground Reference | Primary return path for internal comparator and output driver; requires low-impedance PCB connection |
| 3 - MR | Manual Reset Input | Active-low asynchronous reset; internally pulled up to VDD (30 kΩ); assert low to force RESET low |
| 4 - VDD | Supply Input | Operates from 1.6 V to 6 V; powers internal reference, comparator, and output stage |
| 5 - RESET | Active-High Push-Pull Output | Drives high during valid supply; pulls low on undervoltage or MR assertion - no external pullup required |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower Operation | 220 nA typical supply current enables integration into energy-constrained systems like tire pressure sensors and remote keyless entry modules |
| Precision Threshold Stability | 2.25 V threshold with ±1.5% tolerance over −40°C to 125°C ensures consistent reset behavior across automotive thermal cycles |
| Configurable Reset Timing | Two factory-set delay options (10 ms / 200 ms) selected solely by CT pin state - eliminates timing capacitor variability and board space |
| Integrated Manual Reset | MR pin includes internal 30 kΩ pullup, allowing direct GND tie for reset initiation without external resistor or switch |
| AEC-Q100 Qualified | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C) with automotive-specific reliability testing - suitable for engine control, ADAS, and body electronics |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Battery-Powered Sensor Node |
|---|---|
Use Scenario: Monitors 2.5 V supply rail powering MCU and CAN transceiver in under-hood ECU exposed to thermal cycling and voltage transients. IC Role / Device Role / Timing Role: Provides power-on reset and brownout detection with 2.25 V threshold and 200 ms delay to ensure full MCU initialization before CAN communication starts. Use Value: Prevents erratic MCU boot due to slow-rising or sagging supply; hysteresis avoids chatter during transient dips. |
Use Scenario: Supervises lithium coin-cell–powered environmental sensor node operating intermittently for >5 years. IC Role / Device Role / Timing Role: Delivers 10 ms reset pulse on wake-up while consuming only 220 nA during sleep - extending battery lifetime. Use Value: Eliminates need for external timing capacitor and reduces BOM count; ultra-low IDD minimizes self-discharge impact. |
| Wireless Telematics Module | Medical Portable Diagnostic Device |
Use Scenario: Ensures clean startup of LTE modem and application processor after vehicle ignition or battery replacement. IC Role / Device Role / Timing Role: Generates active-high RESET signal compatible with processor's reset input polarity; CT pin set to VDD for 200 ms delay matching modem boot sequence. Use Value: Push-pull output drives processor reset directly - no level-shifting or pullup resistor required. |
Use Scenario: Guarantees deterministic boot of ARM Cortex-M4-based patient monitor powered from rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Detects 2.5 V system rail collapse below 2.25 V and asserts RESET to halt firmware execution before memory corruption occurs. Use Value: 40 mV hysteresis prevents false resets during brief supply noise; AEC-Q100 qualification supports IEC 60601-1 safety-critical design reuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3837E18QDBVRQ1 | 1.71 V fixed threshold (vs. 2.25 V); otherwise identical architecture, pinout, and features | Suitable for 1.8 V systems (e.g., low-voltage MCUs), not 2.5 V rails | Select when supervising 1.8 V supplies; verify compatibility with target MCU reset voltage requirements |
| TPS3837L30QDBVRQ1 | 2.64 V fixed threshold (vs. 2.25 V); same package, temperature range, and delay options | Designed for 3.0 V or 3.3 V systems where higher threshold margin is needed against ripple | Choose for 3.0 V rail supervision; confirm VIT tolerance aligns with system brownout specification |
Compared with TPS3837E18QDBVRQ1 and TPS3837L30QDBVRQ1, the TPS3837J25QDBVRQ1 uniquely targets 2.5 V nominal rails with optimal threshold headroom, making it the only variant in the family validated for automotive 2.5 V microcontroller power domains.
Availability
TPS3837J25QDBVRQ1 is available at Aetrix Electronics and suitable for automotive engine control units, industrial wireless sensor nodes, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS3837J25QDBVRQ1 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS3837-Q1 family was designed specifically for automotive power-supply monitoring in safety-critical ECUs, emphasizing nanopower consumption, AEC-Q100 qualification, and precise threshold stability over wide temperature extremes.
FAQ
What is the exact reset threshold voltage of the TPS3837J25QDBVRQ1?
The TPS3837J25QDBVRQ1 has a nominal reset threshold voltage of 2.25 V, with a guaranteed tolerance of ±1.5% over the full −40°C to +125°C operating range. This value is factory-trimmed and specified in the electrical characteristics table under parameter VIT for TPS383xJ25 variants.
Does the TPS3837J25QDBVRQ1 require an external pullup resistor on the RESET pin?
No, the TPS3837J25QDBVRQ1 features an active-high push-pull RESET output, meaning it actively drives both high and low states. Unlike open-drain variants, it does not require an external pullup resistor - simplifying layout and reducing BOM count.
How is the reset delay time configured on the TPS3837J25QDBVRQ1?
The reset delay time on the TPS3837J25QDBVRQ1 is selected using the CT pin: connect CT to GND for a typical 10 ms delay, or to VDD for a typical 200 ms delay. No external capacitor or resistor is needed - timing is internally generated and factory-calibrated.
Is the TPS3837J25QDBVRQ1 qualified for automotive applications?
Yes, the TPS3837J25QDBVRQ1 carries the Q1 suffix and is AEC-Q100 qualified for Grade 1 (−40°C to +125°C). It undergoes automotive-specific stress testing including HTOL, temperature cycling, and ESD per MIL-STD-883, and is rated for use in engine control, body electronics, and ADAS subsystems.
What is the maximum supply voltage rating for the TPS3837J25QDBVRQ1?
The absolute maximum supply voltage (VDD) for the TPS3837J25QDBVRQ1 is 7 V, but the recommended operating range is 1.6 V to 6 V. Operation above 6 V is not advised for continuous use, and prolonged exposure to 7 V may affect long-term reliability per the datasheet's absolute maximum ratings note.
TPS3837J25QDBVRQ1 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:
- 2.25V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 10ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS3837J25QDBVRQ1 FAQ
1.How can I place an order for TPS3837J25QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3837J25QDBVRQ1 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 TPS3837J25QDBVRQ1 reliable?
The price and inventory of TPS3837J25QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3837J25QDBVRQ1 is usually 5 days.
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Once your TPS3837J25QDBVRQ1 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 TPS3837J25QDBVRQ1?
For technical support, including TPS3837J25QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3837J25QDBVRQ1 requirements.
6.How does Aetrix verify that TPS3837J25QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3837J25QDBVRQ1 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 TPS3837J25QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3837J25QDBVRQ1?
All TPS3837J25QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3837J25QDBVRQ1, 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 TPS3837J25QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3837J25QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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