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Texas Instruments TPS3836E18QDBVRQ1
- Part No.:
- TPS3836E18QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836E18QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
TPS3836E18QDBVRQ1 from Texas Instruments is an automotive-grade nanosupervisory circuit with 1.71 V fixed reset threshold, 220 nA typical supply current, push-pull active-low RESET output, and selectable 10 ms / 200 ms power-on reset delay via CT pin. It monitors 1.8 V supply rails in battery-powered automotive microcontrollers and low-power DSPs.
For engineers reviewing the TPS3836E18QDBVRQ1 datasheet, TPS3836E18QDBVRQ1 pinout, TPS3836E18QDBVRQ1 application, or TPS3836E18QDBVRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, −40°C to 125°C operation, SOT-23-5 package, manual reset (MR) support, and precise voltage supervision for safety-critical automotive subsystems.
Technical Context
The TPS3836E18QDBVRQ1 implements a bandgap-referenced voltage comparator with internal hysteresis (40 mV typical) and a refresh timer that initiates reset assertion when VDD rises above 1.1 V and holds RESET active until VDD exceeds 1.71 V. Its CT pin selects between two factory-trimmed delay modes: 10 ms (CT = GND) or 200 ms (CT = VDD).
It features a push-pull RESET output capable of sinking 5 mA, supports manual reset via MR pin with internal 30 kΩ pullup, and maintains stable threshold performance across temperature due to integrated trimming-normalized VIT variation is ±0.5% over −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 1.71 V ±0.05 V - precisely supervises 1.8 V nominal supplies with margin for brownout detection |
| Supply Current | 220 nA typical at VDD > VIT - enables multi-year operation in coin-cell–powered automotive sensors |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - configurable timing for processor boot sequence alignment |
| Operating Temperature | −40°C to 125°C - qualified for engine bay and ADAS ECU environments per AEC-Q100 Grade 1 |
| Output Type | Active-low push-pull RESET - drives logic inputs directly without external pullup; sinks 5 mA max |
| Hysteresis | 40 mV typical - prevents oscillation during slow-rising or noisy supply transitions |
| ESD Rating | 2000 V HBM, 200 V MM - robust against assembly and in-vehicle electrostatic discharge events |
Pinout & Package
TPS3836E18QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package, 2.9 mm × 1.6 mm × 1.15 mm, RoHS-compliant, green (Pb-free, no Sb/Br), moisture sensitivity 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 required |
| 2 - GND | Ground Reference | Analog and digital ground return; must be low-impedance connection to minimize noise coupling into threshold comparator |
| 3 - MR | Manual Reset Input | Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ); accepts 0 V to VDD logic levels |
| 4 - VDD | Supply Input | 1.6 V to 6 V operating range; bypass capacitor (0.1 µF ceramic) required near pin for stable threshold reference |
| 5 - RESET | Supervisory Output | Active-low push-pull driver; asserts low during power-up, brownout, or MR assertion; releases high after delay completes |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower Operation | 220 nA supply current enables integration into always-on automotive modules without compromising battery life |
| AEC-Q100 Qualified | Grade 1 (−40°C to 125°C) qualification ensures reliability in under-hood and infotainment applications |
| Factory-Trimmed Threshold | 1.71 V ±0.05 V tolerance eliminates need for external resistor networks or calibration in production |
| Configurable Reset Timing | Single-pin CT selection between 10 ms and 200 ms delays avoids redesign when boot timing requirements change |
| Robust Manual Reset Interface | MR pin with 30 kΩ internal pullup reduces BOM count and simplifies PCB layout versus external pullup solutions |
Applications
| Engine Control Unit (ECU) Power Monitoring | Automotive Infotainment SoC Supervision |
|---|---|
Use Scenario: Monitors 1.8 V core supply of automotive MCU during cold cranking, where battery dips to 6–9 V and causes rail instability. IC Role / Device Role / Timing Role: Provides power-on reset and brownout detection; asserts RESET until VDD stabilizes above 1.71 V and holds for 200 ms to ensure full SoC initialization. Use Value: Prevents MCU lockup or undefined state during transient undervoltage events common in start-stop systems. | Use Scenario: Supervises dual 1.8 V/3.3 V rails powering application processor and display interface in head unit. IC Role / Device Role / Timing Role: Generates synchronized reset pulse on both rails using shared CT configuration; MR pin enables system-level soft reset via touch controller. Use Value: Eliminates need for discrete RC timers and ensures deterministic boot sequencing across heterogeneous voltage domains. |
| ADAS Camera Module Boot Integrity | Telematics Control Unit (TCU) Low-Power Wake-Up |
Use Scenario: Ensures clean startup of image signal processor (ISP) after wake-from-sleep triggered by CAN bus activity. IC Role / Device Role / Timing Role: Uses 10 ms delay (CT = GND) to align RESET release with ISP clock stabilization; MR tied to CAN transceiver WAKE pin. Use Value: Guarantees ISP enters known state before receiving first pixel data, reducing frame corruption risk. | Use Scenario: Maintains supervision during 10-year vehicle lifecycle with lithium thionyl chloride backup battery. IC Role / Device Role / Timing Role: Draws only 220 nA during sleep; detects main 12 V supply restoration and triggers controlled TCU boot via RESET. Use Value: Extends backup battery service life beyond 10 years while ensuring reliable network reconnection after power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3838E18QDBVRQ1 | Open-drain RESET output; requires external pullup resistor; identical threshold, delay, and quiescent current | Suitable where wired-OR reset buses or level translation to higher-voltage logic is needed | Select when system architecture mandates open-drain topology for shared reset lines |
| TLV803EB18DBVR | 1.8 V threshold (1.76 V min), 350 nA supply current, fixed 200 ms delay, SOT-23-5, AEC-Q100 Grade 2 | Higher supply current; no CT pin for delay selection; narrower temp range (−40°C to 105°C) | Choose for cost-sensitive designs where 200 ms delay suffices and Grade 2 temp rating is acceptable |
Compared with TPS3838E18QDBVRQ1, the TPS3836E18QDBVRQ1 offers direct-drive capability without external components; compared with TLV803EB18DBVR, it delivers lower power, wider temperature range, and field-selectable delay-critical for next-generation ADAS and ECU platforms.
Availability
TPS3836E18QDBVRQ1 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TPS3836E18QDBVRQ1 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 technologies for automotive, industrial, and consumer applications.
The TPS3836-Q1 family was designed specifically for automotive power-supply monitoring, providing nanopower, AEC-Q100–qualified supervision with configurable timing and robust manual reset functionality.
FAQ
What is the exact reset threshold voltage of the TPS3836E18QDBVRQ1?
The TPS3836E18QDBVRQ1 has a factory-trimmed negative-going input threshold voltage (VIT) of 1.71 V, with a guaranteed range of 1.64 V to 1.76 V across temperature and process variation. This value is specified in the Electrical Characteristics table and applies directly to the TPS3836E18QDBVRQ1 variant, not the broader family.
How does the CT pin configure reset delay on the TPS3836E18QDBVRQ1?
The CT pin on the TPS3836E18QDBVRQ1 selects between two fixed delay modes: connecting CT to GND configures a typical 10 ms delay, while connecting CT to VDD configures a typical 200 ms delay. No external capacitor is required-the timing is implemented with internal RC networks trimmed during manufacturing.
Is the TPS3836E18QDBVRQ1 pin-compatible with other members of the TPS3836-Q1 family?
Yes, all TPS3836-Q1 variants-including TPS3836J25QDBVRQ1, TPS3836K33QDBVRQ1, and TPS3836L30QDBVRQ1-share identical SOT-23-5 (DBV) pinout, package dimensions, and functional pin assignments. Only the reset threshold voltage differs between part numbers; all other electrical and timing behavior remains consistent.
What is the maximum supply voltage the TPS3836E18QDBVRQ1 can tolerate?
The TPS3836E18QDBVRQ1 has an absolute maximum supply voltage (VDD) rating of 7 V. However, for reliable continuous operation, TI specifies a recommended maximum of 6 V per the Recommended Operating Conditions table. Exceeding 6 V for more than 1000 hours may impact long-term reliability.
Does the TPS3836E18QDBVRQ1 require an external bypass capacitor?
Yes, a 0.1 µF ceramic bypass capacitor is required between VDD and GND, placed as close as possible to the TPS3836E18QDBVRQ1 pins. This is explicitly stated in Note 3 of the datasheet to ensure stable operation of the internal bandgap reference and prevent threshold voltage drift during supply transients.
TPS3836E18QDBVRQ1 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:
- 1.71V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- 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
TPS3836E18QDBVRQ1 FAQ
1.How can I place an order for TPS3836E18QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836E18QDBVRQ1 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 TPS3836E18QDBVRQ1 reliable?
The price and inventory of TPS3836E18QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836E18QDBVRQ1 is usually 5 days.
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Once your TPS3836E18QDBVRQ1 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 TPS3836E18QDBVRQ1?
For technical support, including TPS3836E18QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836E18QDBVRQ1 requirements.
6.How does Aetrix verify that TPS3836E18QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3836E18QDBVRQ1 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 TPS3836E18QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3836E18QDBVRQ1?
All TPS3836E18QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836E18QDBVRQ1, 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 TPS3836E18QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3836E18QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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