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Texas Instruments TPS3836L30QDBVRQ1
- Part No.:
- TPS3836L30QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836L30QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,759
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Product details
Overview
TPS3836L30QDBVRQ1 from Texas Instruments is an automotive-grade nanosupervisory circuit with 2.64 V fixed reset threshold, push-pull active-low RESET output, 220 nA typical supply current, 10 ms/200 ms selectable power-on reset delay, and operation from −40°C to 125°C in a 5-pin SOT-23 package. It monitors supply voltage for low-power DSPs and microcontrollers in battery-powered automotive systems.
For engineers reviewing the TPS3836L30QDBVRQ1 datasheet, TPS3836L30QDBVRQ1 pinout, TPS3836L30QDBVRQ1 application, or TPS3836L30QDBVRQ1 equivalent, key selection criteria include its precise 2.64 V threshold tolerance (±3%), manual reset capability, CT-pin programmable delay, and AEC-Q100 qualification for automotive use.
Technical Context
The TPS3836L30QDBVRQ1 integrates a precision bandgap reference, internal voltage divider, and refresh timer to generate a reliable power-on reset signal. Its reset assertion occurs when VDD rises above 1.1 V, then remains active until VDD exceeds 2.64 V and sustains for the selected delay period.
Reset timing is controlled via the CT pin: grounded for 10 ms typical delay, tied to VDD for 200 ms typical delay. The push-pull RESET output drives low actively and pulls high internally, eliminating external pull-up requirements while supporting 5 mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.64 V ±3% - precisely matches 2.7 V nominal rail systems with guaranteed hysteresis of 40 mV for noise immunity. |
| Supply Current | 220 nA typical at VDD > 3 V - enables multi-year operation in coin-cell–powered automotive sensors and telematics modules. |
| Power-On Reset Delay | Selectable 10 ms or 200 ms - configurable via CT pin to align with processor boot timing or system capacitor charging profiles. |
| Output Type | Active-low push-pull - provides rail-to-rail drive without external components, supports direct connection to MCU reset inputs. |
| Operating Temperature | −40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood and infotainment applications. |
| ESD Protection | >2000 V HBM, >200 V MM - ensures robustness during automotive assembly and field service handling. |
Pinout & Package
TPS3836L30QDBVRQ1 uses the 5-pin SOT-23 (DBV) package, 2.9 mm × 1.6 mm × 1.45 mm, with gull-wing leads and pin 1 marked by an index area. Pin 1 is CT, Pin 2 is GND, Pin 3 is MR, Pin 4 is VDD, Pin 5 is RESET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CT (Pin 1) | Delay Configuration Input | Ground for 10 ms reset delay; connect to VDD for 200 ms delay - no external components required. |
| GND (Pin 2) | Ground Reference | Primary return path for internal reference and output stage; must be low-impedance for stable threshold accuracy. |
| MR (Pin 3) | Manual Reset Input | Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ), so open or VDD-connected for normal operation. |
| VDD (Pin 4) | Supply Input | Accepts 1.6 V to 6 V; powers internal circuitry and defines reset threshold reference point. |
| RESET (Pin 5) | Reset Output | Push-pull active-low output; sinks 5 mA minimum, drives high to VDD without external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower Operation | 220 nA supply current enables integration into always-on automotive subsystems without compromising battery life. |
| Automotive Qualification | AEC-Q100 Grade 1 certified with full temperature range support (−40°C to 125°C) and enhanced reliability testing. |
| Configurable Reset Timing | Single-pin CT selection between 10 ms and 200 ms delay eliminates need for external RC networks or firmware configuration. |
| Precision Threshold Accuracy | ±3% over temperature ensures reliable reset assertion across automotive thermal cycles without calibration. |
| Robust Manual Reset Interface | Internal 30 kΩ pull-up on MR simplifies PCB layout and reduces BOM count; compatible with open-drain or push-pull host signals. |
Applications
| Engine Control Unit (ECU) Power Monitoring | ADAS Camera Module Supervision |
|---|---|
Use Scenario: Monitors 2.7 V domain powering MCU and CAN transceiver in engine control unit during cold cranking and load dump events. IC Role / Device Role / Timing Role: Provides power-on reset and brownout detection with 2.64 V threshold aligned to 2.7 V rail tolerance. Use Value: Prevents MCU lockup during voltage sag by asserting RESET before VDD drops below functional minimum, ensuring deterministic restart. |
Use Scenario: Ensures clean startup of image sensor and ISP in automotive surround-view camera after ignition cycle. IC Role / Device Role / Timing Role: Generates 200 ms reset pulse (CT = VDD) to accommodate slow power rail stabilization of analog front-end. Use Value: Eliminates boot-time glitches by guaranteeing sufficient hold time for sensor initialization sequences before firmware execution. |
| Telematics Control Unit (TCU) Backup Power Path | Electric Power Steering (EPS) Microcontroller Reset |
Use Scenario: Supervises primary 3.3 V rail and backup coin-cell–powered real-time clock domain in connected vehicle TCU. IC Role / Device Role / Timing Role: Uses 10 ms delay (CT = GND) for fast response to main rail failure while maintaining ultra-low quiescent current. Use Value: Enables seamless switchover to backup power without MCU corruption, leveraging 220 nA sleep current to extend battery life. |
Use Scenario: Resets EPS microcontroller during battery voltage recovery after stop-start cycling in hybrid vehicles. IC Role / Device Role / Timing Role: Detects 2.64 V threshold crossing with 40 mV hysteresis to reject ripple-induced false resets on noisy 12 V–derived rails. Use Value: Improves system safety by preventing unintended motor actuation due to marginal supply conditions during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836K33QDBVRQ1 | 2.93 V fixed threshold; otherwise identical pinout, timing, and electrical specs. | Targeted at 3.3 V systems instead of 2.7 V domains; same automotive qualification and package. | Select when monitoring 3.3 V rails where 2.93 V threshold better accommodates tolerance stack-up. |
| TPS3838L30QDBVRQ1 | Same 2.64 V threshold but open-drain RESET output; requires external pull-up resistor. | Suitable where level-shifting or wired-OR reset bus is needed; higher flexibility but added component count. | Choose only if system architecture mandates open-drain topology for shared reset lines or voltage translation. |
Compared with TPS3836K33QDBVRQ1, the TPS3836L30QDBVRQ1 offers tighter alignment with 2.7 V supplies; versus TPS3838L30QDBVRQ1, it eliminates external pull-up dependency while delivering identical supervision accuracy and automotive reliability.
Availability
TPS3836L30QDBVRQ1 is available at Aetrix Electronics and suitable for automotive ECUs, ADAS camera modules, telematics control units, and electric power steering systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS3836L30QDBVRQ1 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 automotive electronics, with decades of experience in high-reliability power management and supervision solutions.
The TPS3836-Q1 family was designed specifically for automotive microcontroller and DSP power sequencing, emphasizing nanopower consumption, AEC-Q100 compliance, and factory-programmed precision thresholds to simplify system-level reset design.
FAQ
What is the exact reset threshold voltage of the TPS3836L30QDBVRQ1?
The TPS3836L30QDBVRQ1 has a nominal reset threshold voltage of 2.64 V, with a guaranteed tolerance of ±3% over the full −40°C to 125°C operating temperature range. This value is factory-trimmed and specified in the Electrical Characteristics table of the official datasheet (SGLS141A), and applies directly to the TPS3836L30QDBVRQ1 without user calibration.
How does the CT pin configure the reset delay time in the TPS3836L30QDBVRQ1?
In the TPS3836L30QDBVRQ1, the CT pin selects between two factory-characterized delay times: connecting CT to GND yields a typical 10 ms power-on reset delay, while connecting CT to VDD yields a typical 200 ms delay. No external components are needed, and the delay begins after VDD exceeds the 2.64 V threshold and remains stable.
Is the TPS3836L30QDBVRQ1 pin-compatible with other members of the TPS3836-Q1 family?
Yes, the TPS3836L30QDBVRQ1 shares identical 5-pin SOT-23 (DBV) packaging and pinout with all TPS3836-Q1 variants including TPS3836E18QDBVRQ1, TPS3836J25QDBVRQ1, and TPS3836K33QDBVRQ1. All use the same CT/GND/MR/VDD/RESET pin assignment and mechanical footprint.
Does the TPS3836L30QDBVRQ1 require an external pull-up resistor on the RESET pin?
No, the TPS3836L30QDBVRQ1 features a push-pull RESET output that actively drives both high and low states. It pulls high to VDD internally and does not require an external pull-up resistor - unlike open-drain alternatives such as the TPS3838L30QDBVRQ1, which mandates an external pull-up for proper logic high assertion.
What automotive qualification does the TPS3836L30QDBVRQ1 meet?
The TPS3836L30QDBVRQ1 is qualified per AEC-Q100 Grade 1 standards, with full characterization across −40°C to 125°C ambient temperature. It includes automotive-specific reliability testing, ESD robustness (>2000 V HBM), and process controls documented in Texas Instruments' production data sheet SGLS141A.
TPS3836L30QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.64V
- 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
TPS3836L30QDBVRQ1 FAQ
1.How can I place an order for TPS3836L30QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836L30QDBVRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of TPS3836L30QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836L30QDBVRQ1 is usually 5 days.
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5.How can I obtain technical support or documentation for TPS3836L30QDBVRQ1?
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6.How does Aetrix verify that TPS3836L30QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3836L30QDBVRQ1 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 TPS3836L30QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3836L30QDBVRQ1?
All TPS3836L30QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836L30QDBVRQ1, 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 TPS3836L30QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3836L30QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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