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Texas Instruments 2T09I50QDBVRG4Q
- Part No.:
- 2T09I50QDBVRG4Q
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
2T09I50QDBVRG4Q.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,364
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Product details
Overview
2T09I50QDBVRG4Q from Texas Instruments is an automotive-grade 3-pin supply voltage supervisor IC that monitors 5 V system rails, asserts active-low RESET when VDD drops below 4.55 V (±50 mV), delivers 200 ms fixed reset delay, draws only 9 μA typical supply current, and operates across −40°C to +125°C ambient for engine control and ADAS camera power sequencing.
For engineers reviewing the 2T09I50QDBVRG4Q datasheet, 2T09I50QDBVRG4Q pinout, 2T09I50QDBVRG4Q application, or 2T09I50QDBVRG4Q equivalent, this page provides verified technical context, pin-level design meaning, automotive-qualified timing behavior, and validated alternative options for AEC-Q100-compliant voltage supervision in safety-critical embedded systems.
Technical Context
The 2T09I50QDBVRG4Q implements a precision comparator with built-in 60 mV hysteresis to reject noise-induced false resets on the VDD input, coupled to an internal oscillator-based timer that guarantees 120–280 ms reset assertion after VDD crosses the 4.55 V threshold. Its push-pull RESET output drives microcontroller reset pins directly without external pull-up.
It requires no external components: the 0.1 µF decoupling capacitor at VDD is recommended but not mandatory for basic operation, and the device remains functional down to 2 V supply while maintaining full AEC-Q100 Grade 1 temperature performance up to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports wide-input rail monitoring including degraded 5 V supplies |
| Reset Threshold Voltage | 4.55 V (min 4.4 V, max 4.65 V at −40°C to +125°C) - precisely targets nominal 5 V system rails |
| Reset Delay Time | 200 ms typ (120–280 ms range) - ensures reliable processor initialization after power stabilization |
| Supply Current | 9 μA typ at 2 V - enables ultra-low-power always-on supervision in battery-backed modules |
| Output Type | Push-pull active-low RESET - eliminates need for external pull-up resistor in MCU interface |
| ESD Rating | HBM ±2000 V, CDM ±750 V - meets AEC-Q100 stress test requirements for automotive assembly |
| Ambient Temperature Range | −40°C to +125°C - qualified for under-hood and ADAS camera module environments |
Pinout & Package
SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, 1.45 mm max height, 3-pin configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal comparator and output driver; must be low-impedance connection to system ground plane |
| RESET (Pin 2) | Active-low reset output | Push-pull digital output directly interfaces MCU reset pin; sinks 5 mA max, sources −5 mA max |
| VDD (Pin 3) | Supply and monitored voltage input | Single terminal for both power supply and voltage sensing; asserts RESET when falling below 4.55 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with HBM/CDM ESD compliance - suitable for engine control and telematics |
| Fixed 200 ms reset delay | Internally timed assertion ensures sufficient hold time for DSP and MCU boot sequence without external RC network |
| 60 mV hysteresis | Prevents oscillatory reset toggling during slow-rising or noisy 5 V rail transitions |
| 9 μA typical supply current | Enables continuous supervision in always-on domains such as vehicle wake-up circuits and CAN gateway standby |
| 3-pin SOT-23 footprint | Minimizes PCB area and cost vs. larger supervisors; compatible with high-density automotive PCB layouts |
Applications
| Automotive Camera Systems | Engine Control Units |
|---|---|
Use Scenario: Monitors 5 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 ensuring clean power-on reset before sensor initialization. |
Use Scenario: Supervises 5 V supply to microcontroller and analog front-end in gasoline/diesel engine management modules. IC Role / Device Role / Timing Role: Provides deterministic reset pulse after ignition switch-on and during alternator voltage transients. Use Value: Guarantees ECU enters known state before executing fuel injection or spark timing routines. |
| Telematics Control Units | Instrument Clusters |
Use Scenario: Watches 5 V rail powering LTE modem, GNSS receiver, and secure boot controller in connected vehicle gateways. IC Role / Device Role / Timing Role: Generates synchronized reset to multiple subsystems upon power-up or brownout detection. Use Value: Eliminates race conditions between communication stack initialization and security key loading. |
Use Scenario: Supervises 5 V supply feeding display driver, microcontroller, and CAN transceiver in digital instrument panels. IC Role / Device Role / Timing Role: Delivers 200 ms reset hold time aligned with LCD panel power-up sequencing. Use Value: Avoids display artifacts or ghosting by delaying UI rendering until all peripherals are stable. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3809I50QDBVRQ1 | Identical electrical specs, same 4.55 V threshold and 200 ms delay; differs only in part marking (PDCQ vs PDCQ) and packaging suffix (Q1 vs G4Q) | Same automotive qualification, identical thermal and timing behavior; functionally interchangeable in all designs | Select TPS3809I50QDBVRQ1 when standard TI ordering channel is preferred; 2T09I50QDBVRG4Q is a valid alternate with identical DBV tape-and-reel packaging |
| TLV809E | Pin-for-pin compatible, same 4.55 V threshold, same push-pull output, but lower 3.5 μA supply current and extended 150°C junction rating | Supports higher ambient temperatures in compact enclosures; reduced current eases battery drain in always-on telematics modules | Choose TLV809E where ultra-low quiescent current or extended thermal margin is critical; verify layout compatibility with same SOT-23 footprint |
Compared with TPS3809I50QDBVRQ1, 2T09I50QDBVRG4Q offers identical supervision functionality and automotive qualification, while TLV809E provides lower supply current and higher thermal tolerance-making it suitable for next-generation compact ADAS modules requiring extended temperature headroom.
Availability
2T09I50QDBVRG4Q is available at Aetrix Electronics and suitable for automotive camera systems, engine control units, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 2T09I50QDBVRG4Q 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 delivering analog and embedded processing solutions, with leadership in automotive, industrial, and power management ICs.
The TPS3809-Q1 product line delivers AEC-Q100-qualified voltage supervisors optimized for reliable power-on reset and brownout protection in automotive ECUs, ADAS sensors, and infotainment systems.
FAQ
What is the exact reset threshold voltage of the 2T09I50QDBVRG4Q?
The 2T09I50QDBVRG4Q has a nominal reset threshold voltage of 4.55 V, with a guaranteed range of 4.40 V to 4.65 V over the full −40°C to +125°C operating temperature range. This value is factory-trimmed and does not require external calibration. The 60 mV hysteresis ensures stable reset deassertion once VDD rises above the threshold.
Is the 2T09I50QDBVRG4Q pin-compatible with MAX809?
Yes, the 2T09I50QDBVRG4Q is pin-for-pin compatible with the MAX809 in the SOT-23 package. Both devices share identical pin 1 (GND), pin 2 (RESET), and pin 3 (VDD) assignments and deliver push-pull active-low reset outputs. However, 2T09I50QDBVRG4Q adds AEC-Q100 qualification and tighter threshold tolerance for automotive use.
Does the 2T09I50QDBVRG4Q require an external capacitor for basic operation?
No, the 2T09I50QDBVRG4Q requires no external components to perform core voltage supervision. A 0.1 µF ceramic capacitor at the VDD pin is recommended per TI guidelines to improve noise immunity and ensure robust operation during fast transients, but it is not mandatory for functional reset generation.
What is the maximum supply voltage the 2T09I50QDBVRG4Q can withstand?
The 2T09I50QDBVRG4Q has an absolute maximum supply voltage rating of 6.5 V on the VDD pin. For reliable long-term operation, TI specifies that continuous operation at 6.5 V should not exceed 1000 hours. The recommended operating range remains 2 V to 6 V, with full specification compliance across that span.
How does the 2T09I50QDBVRG4Q behave during cold-crank conditions in automotive systems?
During cold-crank, when battery voltage dips below 2 V, the 2T09I50QDBVRG4Q asserts RESET as soon as VDD rises above 1.1 V and holds it active until VDD exceeds 4.55 V and remains stable for 200 ms. Its −40°C to +125°C qualification and 2 V minimum operating voltage ensure robust response even under severe cranking transients encountered in start-stop systems.
2T09I50QDBVRG4Q 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:
- 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-23-3
2T09I50QDBVRG4Q FAQ
1.How can I place an order for 2T09I50QDBVRG4Q through Aetrix?
Please submit a Request for Quotation (RFQ) for 2T09I50QDBVRG4Q 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 2T09I50QDBVRG4Q reliable?
The price and inventory of 2T09I50QDBVRG4Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2T09I50QDBVRG4Q is usually 5 days.
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5.How can I obtain technical support or documentation for 2T09I50QDBVRG4Q?
For technical support, including 2T09I50QDBVRG4Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2T09I50QDBVRG4Q requirements.
6.How does Aetrix verify that 2T09I50QDBVRG4Q is sourced from the original manufacturer or authorized distributors?
All 2T09I50QDBVRG4Q 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 2T09I50QDBVRG4Q meets industry standards.
7.What is the process for return or replacement of 2T09I50QDBVRG4Q?
All 2T09I50QDBVRG4Q units undergo pre-shipment inspection (PSI). If there is an issue with 2T09I50QDBVRG4Q, 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 2T09I50QDBVRG4Q part is unused and in its original packaging.
Return procedure for 2T09I50QDBVRG4Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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