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Texas Instruments TPS3809L30QDBVRQ1
- Part No.:
- TPS3809L30QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TPS3809L30QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,071
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Product details
Overview
TPS3809L30QDBVRQ1 from Texas Instruments is an automotive-grade 3-pin supply voltage supervisor IC that monitors 2.64 V system rails with ±30 mV hysteresis, delivers 200 ms power-on reset delay, consumes only 9 μA typical supply current, and asserts active-low RESET during undervoltage conditions - used for reliable initialization in engine control units and automotive camera modules.
For engineers reviewing the TPS3809L30QDBVRQ1 datasheet, TPS3809L30QDBVRQ1 pinout, TPS3809L30QDBVRQ1 application, or TPS3809L30QDBVRQ1 equivalent, this page provides verified electrical parameters, AEC-Q100 Grade 1 qualification details, SOT-23 package mapping, and validated alternative options for automotive voltage supervision designs.
Technical Context
The TPS3809L30QDBVRQ1 implements a precision comparator with internal 1.137 V reference and resistor divider to detect VDD crossing its 2.64 V threshold (−40°C to +125°C), with built-in hysteresis preventing chatter during slow-rising or noisy supply transitions. Its reset logic includes a monostable timer ensuring minimum 120–280 ms deassertion delay after VDD exceeds VIT.
This device operates as a single-supply monitor with push-pull RESET output, requires no external components, and features immunity to short negative transients on VDD - enabling direct integration into safety-critical automotive subsystems without additional filtering or timing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports wide input range including 2.64 V monitored rail and higher auxiliary supplies |
| Threshold Voltage (VIT) | 2.64 V (typical), 2.58–2.70 V (min/max over −40°C to +125°C) - precisely matches 2.64 V system rails |
| Hysteresis | 35 mV - prevents false resets during marginal or noisy supply conditions |
| Reset Delay Time (td) | 200 ms (typical), 120–280 ms (min/max) - ensures full processor initialization before release |
| Supply Current (IDD) | 9 μA (typical at 2 V), ≤30 μA (max at 6 V) - enables ultra-low-power always-on monitoring |
| Output Type | Push-pull, active-low RESET - drives microcontroller reset pins directly without pull-up resistor |
| ESD Rating | HBM ±2000 V, CDM ±750 V - meets AEC-Q100 stress test requirements for automotive reliability |
Pinout & Package
SOT-23 (DBV) package, 3-pin, body size 2.90 mm × 1.60 mm, max height 1.45 mm, RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane |
| RESET | Active-low reset output | Push-pull driver capable of sinking 5 mA; directly interfaces with MCU reset pin without external pull-up |
| VDD | Supply and monitoring input | Monitors system rail voltage; asserts RESET when VDD drops below 2.64 V; requires 0.1 µF ceramic decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C ambient operation - suitable for under-hood and ADAS ECU environments |
| Fixed 200 ms reset delay | Guaranteed minimum 120 ms delay ensures robust system boot sequencing across temperature and voltage corners |
| No external components required | Integrated reference, comparator, timer, and push-pull driver eliminate BOM cost and layout area |
| Low 9 μA quiescent current | Enables continuous monitoring in battery-backed or always-on automotive subsystems without significant drain |
| 35 mV hysteresis | Prevents oscillatory reset assertion during slow supply recovery or ripple-induced threshold crossings |
Applications
| Automotive Camera Systems | Telematics Control Units |
|---|---|
Use Scenario: Monitors 2.64 V power rail supplying image sensor and ISP in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to camera SoC during cold crank or load dump events. Use Value: Prevents corrupted frame capture or firmware lockup by enforcing clean power-on reset before sensor initialization. |
Use Scenario: Supervises 2.64 V supply to cellular modem and GNSS receiver in vehicle connectivity modules. IC Role / Device Role / Timing Role: Ensures synchronized reset of communication processors after battery voltage stabilization post-ignition. Use Value: Eliminates modem hang-ups or GPS cold-start failures caused by premature firmware execution during supply ramp-up. |
| Engine Control Modules | Instrument Clusters |
Use Scenario: Watches 2.64 V rail powering microcontroller and CAN transceiver in ECU main board. IC Role / Device Role / Timing Role: Generates deterministic reset pulse aligned with engine cranking profile and alternator regulation. Use Value: Guarantees deterministic boot sequence even during transient voltage dips below 6 V during start-stop cycles. |
Use Scenario: Supervises 2.64 V supply to cluster MCU and TFT display controller in digital dashboards. IC Role / Device Role / Timing Role: Coordinates reset timing between display subsystem and main processor for glitch-free boot animation. Use Value: Avoids partial screen rendering or UI freeze by synchronizing reset release with stable power to all cluster submodules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E | Pin-for-pin compatible, identical functions and electrical parameters per TI documentation | Same AEC-Q100 qualification, same 2.64 V threshold, same 200 ms delay - drop-in replacement | Select TLV809E for new designs where second-source availability or updated process node is preferred |
| TPS3809K33QDBVRQ1 | Same family, SOT-23 package, but 2.93 V threshold (not 2.64 V); 40 mV hysteresis vs 35 mV | Designed for 3.3 V rails, not 2.64 V systems - unsuitable for direct substitution without circuit validation | Choose only if redesigning for 3.3 V supply monitoring; verify reset timing and hysteresis impact on system stability |
Compared with TPS3809L30QDBVRQ1, TLV809E offers identical functionality and qualification for seamless migration, while TPS3809K33QDBVRQ1 serves a different voltage tier and requires board-level revalidation due to threshold mismatch.
Availability
TPS3809L30QDBVRQ1 is available at Aetrix Electronics and suitable for automotive camera systems, telematics control units, and engine control modules requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for TPS3809L30QDBVRQ1 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 and embedded processing solutions, with deep expertise in automotive electronics, power management, and precision analog design.
The TPS3809-Q1 product line delivers AEC-Q100 qualified voltage supervisors optimized for automotive DSP and microcontroller reset sequencing, emphasizing reliability, low quiescent current, and robust transient immunity in harsh environments.
FAQ
What is the exact reset threshold voltage of TPS3809L30QDBVRQ1?
The TPS3809L30QDBVRQ1 has a nominal reset threshold voltage (VIT) of 2.64 V, with guaranteed min/max values of 2.58 V and 2.70 V across the full −40°C to +125°C operating temperature range. This value is fixed by internal resistor divider and does not require external configuration.
Does TPS3809L30QDBVRQ1 require an external pull-up resistor on the RESET pin?
No, TPS3809L30QDBVRQ1 features a push-pull RESET output capable of actively driving high or low, eliminating the need for an external pull-up resistor. It can sink up to 5 mA and source up to 5 mA, enabling direct interface with most microcontroller reset inputs.
Is TPS3809L30QDBVRQ1 qualified for automotive use?
Yes, TPS3809L30QDBVRQ1 is AEC-Q100 qualified for Device Temperature Grade 1 (−40°C to +125°C ambient), with HBM ESD rating of ±2000 V and CDM rating of ±750 V - meeting stringent automotive reliability and stress-test requirements.
What is the power-on reset delay time of TPS3809L30QDBVRQ1?
The TPS3809L30QDBVRQ1 provides a fixed power-on reset delay time (td) of 200 ms typical, with guaranteed minimum of 120 ms and maximum of 280 ms over temperature and voltage. This delay starts after VDD rises above the 2.64 V threshold and ensures proper system initialization.
Can TPS3809L30QDBVRQ1 monitor supply voltages below 2.64 V?
No - TPS3809L30QDBVRQ1 is specifically designed for 2.64 V threshold monitoring. For lower thresholds, TI offers other members of the family such as TPS3809J25QDBVRQ1 (2.25 V) or TLV803-series open-drain alternatives. Using TPS3809L30QDBVRQ1 outside its specified 2.58–2.70 V window risks incorrect reset behavior.
TPS3809L30QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 120ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TPS3809L30QDBVRQ1 FAQ
1.How can I place an order for TPS3809L30QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3809L30QDBVRQ1 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 TPS3809L30QDBVRQ1 reliable?
The price and inventory of TPS3809L30QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3809L30QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS3809L30QDBVRQ1?
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TPS3809L30QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3809L30QDBVRQ1 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 TPS3809L30QDBVRQ1?
For technical support, including TPS3809L30QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3809L30QDBVRQ1 requirements.
6.How does Aetrix verify that TPS3809L30QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3809L30QDBVRQ1 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 TPS3809L30QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3809L30QDBVRQ1?
All TPS3809L30QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3809L30QDBVRQ1, 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 TPS3809L30QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3809L30QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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