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Texas Instruments TLV809EA29DCKR
- Part No.:
- TLV809EA29DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
TLV809EA29DCKR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:913
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Product details
Overview
TLV809EA29DCKR from Texas Instruments is a push-pull, active-low voltage supervisor IC designed for reliable power-on reset and brownout detection in ultra-low-power systems. It features a 2.93 V ±0.5% threshold voltage, 200 ms fixed reset delay, 250 nA typical supply current at 3.3 V, and guaranteed operation down to 0.7 V VDD - enabling robust supervision in battery-powered microcontrollers and portable sensors.
For engineers reviewing the TLV809EA29DCKR datasheet, TLV809EA29DCKR pinout, TLV809EA29DCKR application, or TLV809EA29DCKR equivalent, key selection considerations include its SC-70 (DCK) 3-pin package, absence of external pull-up requirement, glitch immunity (10 µs), and compatibility with systems requiring precise 2.93 V monitoring with minimal quiescent power draw.
Technical Context
The TLV809EA29DCKR implements a precision bandgap-referenced comparator with integrated hysteresis (±0.9–1.5%) to prevent chatter during threshold crossings. Its internal timer enforces a factory-programmed 200 ms reset timeout after VDD rises above VIT+ = VIT− + VHYS, ensuring stable processor initialization.
Unlike open-drain variants, this device uses push-pull output logic, eliminating need for external pull-up resistors while supporting sink currents up to 2 mA at 1.7 V and source capability up to 4 mA at 6 V - making it suitable for direct interfacing with MCU reset inputs without additional passive components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 0.7 V to 6 V - enables supervision during deep brownout and across wide input rails including Li-ion, coin cell, and regulated 3.3/5 V domains. |
| Threshold Voltage (VIT−) | 2.93 V ±0.5% (typ.) - high-accuracy detection critical for systems where marginal voltage drop must trigger reset before functional failure. |
| Reset Delay (tD) | 200 ms (min 130 ms, max 270 ms) - ensures sufficient hold time for microcontroller core and peripherals to stabilize post-power-up. |
| Quiescent Current (IDD) | 250 nA (typ.), ≤1 µA (max at 3.3 V) - extends battery life in always-on IoT nodes and energy-harvesting applications. |
| Output Type | Push-pull, active-low - drives reset line directly without external pull-up, reducing BOM count and PCB area in space-constrained designs. |
| Glitch Immunity (tGI) | 10 µs (typ.) - rejects fast transients on VDD (e.g., switching noise, ESD coupling) that could falsely trigger reset. |
| Operating Temperature | –40°C to +125°C - supports industrial, automotive under-hood, and metering applications with extended thermal requirements. |
Pinout & Package
TLV809EA29DCKR is housed in a 3-pin SC-70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for compact portable electronics. Pin 1 = GND, Pin 2 = RESET (active-low output), Pin 3 = VDD - standard pinout compatible with layout footprints for TI's TLV80x series and legacy MAX809.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for internal circuitry and output driver; requires low-impedance connection to system ground plane. |
| RESET | Active-low push-pull output | Asserts logic-low reset signal when VDD < 2.93 V; deasserts after 200 ms once VDD > VIT+; sinks up to 2 mA at 1.7 V. |
| VDD | Supply and monitored rail | Input voltage source and monitored node; must be bypassed with 0.1–1 µF capacitor near device for noise immunity and POR stability. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.93 V threshold | ±0.5% accuracy over –40°C to +125°C eliminates need for external calibration or trimming components. |
| 200 ms fixed reset timeout | Guaranteed minimum 130 ms hold time ensures full initialization of modern MCUs and memory subsystems. |
| 250 nA ultra-low IQ | Reduces average current draw by >90% vs. legacy supervisors, extending shelf life and runtime in coin-cell-powered devices. |
| 0.7 V VPOR operation | Delivers defined reset state even during severe brownout - critical for fail-safe shutdown in safety-critical embedded systems. |
| Integrated glitch filter | 10 µs immunity prevents false resets from transient noise on VDD, improving system reliability without external RC filtering. |
Applications
| Electricity Meters | Portable Medical Sensors |
|---|---|
Use Scenario: Monitoring main supply and backup battery rails in smart meters to ensure accurate metrology and secure firmware boot. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection for ARM Cortex-M based meter SoCs. Use Value: 2.93 V threshold aligns with Li-SOCl₂ backup cell nominal voltage; 200 ms delay accommodates EEPROM write completion before MCU execution. | Use Scenario: Enabling reliable wake-up and sensor initialization in wearable ECG patches powered by CR2032 cells. IC Role / Device Role / Timing Role: Low-IQ reset generator ensuring MCU reset remains asserted until regulated 3.3 V rail stabilizes after cold start. Use Value: 250 nA IQ extends shelf life beyond 5 years; 0.7 V VPOR guarantees deterministic reset even as battery discharges to end-of-life. |
| Industrial PLC I/O Modules | Notebook Power Sequencing |
Use Scenario: Supervising isolated 5 V and 3.3 V rails in DIN-rail mounted controllers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Precision voltage monitor triggering hardware reset if input voltage sags below 2.93 V due to load transients or supply faults. Use Value: ±0.5% threshold accuracy and –40°C to +125°C operation eliminate drift-related false resets in uncooled enclosures. | Use Scenario: Coordinating reset timing between CPU, GPU, and chipset power rails during notebook power-on and sleep/wake transitions. IC Role / Device Role / Timing Role: Dedicated 2.93 V supervisor for auxiliary 3.3 V rail powering USB-C PD controllers and EC firmware. Use Value: Push-pull output eliminates pull-up resistor, saving board space and simplifying layout in dense motherboard designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809MA29DCKR | Same 2.93 V threshold and SC-70 package, but 10 ms reset delay (vs. 200 ms). | Suitable for fast-boot systems (e.g., real-time motor control) where shorter reset hold time is acceptable. | Select when faster release from reset is required and MCU startup time is <10 ms. |
| MAX809TRD3T | Pin-compatible 2.93 V supervisor, but higher IQ (1.2 µA typ.), wider threshold tolerance (±2.5%), and no 0.7 V VPOR guarantee. | Legacy drop-in replacement where ultra-low power and deep brownout operation are not critical. | Choose only for cost-sensitive, non-battery applications with relaxed accuracy and power requirements. |
Compared with TLV809MA29DCKR and MAX809TRD3T, TLV809EA29DCKR delivers superior accuracy (±0.5% vs. ±2.5%), lowest power (250 nA vs. ≥1.2 µA), and guaranteed operation down to 0.7 V - making it the optimal choice for next-generation battery-powered and industrial edge devices demanding long-term reliability.
Availability
TLV809EA29DCKR is available at Aetrix Electronics and suitable for electricity meters, portable medical sensors, and industrial PLC I/O modules requiring stable component supply, long-lifecycle support, and guaranteed parametric performance across temperature extremes.
Supply support for TLV809EA29DCKR 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 solutions for industrial, automotive, and personal electronics markets.
The TLV809E series belongs to TI's precision low-power voltage supervisor product line, engineered specifically for battery-constrained and thermally demanding applications where accuracy, ultra-low IQ, and guaranteed brownout behavior are essential.
FAQ
What is the exact reset threshold voltage of TLV809EA29DCKR?
The TLV809EA29DCKR has a factory-programmed falling threshold voltage (VIT−) of 2.93 V with ±0.5% typical accuracy over –40°C to +125°C. This value is laser-trimmed during production and specified in the Electrical Characteristics table of the official datasheet (SLVSES2J). The rising threshold (VIT+) equals VIT− plus hysteresis (0.9–1.5%), ensuring noise-immune release.
Does TLV809EA29DCKR require an external pull-up resistor on the RESET pin?
No, TLV809EA29DCKR does not require an external pull-up resistor because it features a push-pull active-low output topology. Unlike open-drain variants such as TLV803E, this device actively drives both high and low states on the RESET pin - simplifying design and reducing component count in applications like MCU reset circuits.
What is the reset delay time for TLV809EA29DCKR and how is it implemented?
The TLV809EA29DCKR provides a fixed 200 ms reset delay (tD), with min/max values of 130 ms and 270 ms respectively. This delay is internally generated using a precision RC timer and begins counting after VDD rises above VIT+, ensuring the reset signal remains asserted long enough for complete system initialization before release.
Can TLV809EA29DCKR operate reliably at very low supply voltages?
Yes, TLV809EA29DCKR guarantees a defined output state down to 0.7 V VDD (VPOR), meaning it will assert a valid reset signal even during deep brownout conditions. This capability is critical for fail-safe operation in battery-powered systems approaching end-of-life, and is verified across the full –40°C to +125°C temperature range.
Is TLV809EA29DCKR pin-compatible with legacy MAX809 devices?
Yes, TLV809EA29DCKR is pin-to-pin compatible with MAX809TRD3T and other members of the MAX803/809/810 family in SC-70 (DCK) and SOT-23 (DBZ) packages. This allows direct replacement without PCB changes, while delivering improved specifications including lower IQ (250 nA vs. 1.2 µA), tighter threshold accuracy (±0.5% vs. ±2.5%), and extended temperature range.
TLV809EA29DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 130ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
TLV809EA29DCKR FAQ
1.How can I place an order for TLV809EA29DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV809EA29DCKR 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 TLV809EA29DCKR reliable?
The price and inventory of TLV809EA29DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV809EA29DCKR is usually 5 days.
3.What payment methods are accepted for TLV809EA29DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV809EA29DCKR transactions.
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4.How is shipping managed for TLV809EA29DCKR?
TLV809EA29DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV809EA29DCKR 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 TLV809EA29DCKR?
For technical support, including TLV809EA29DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV809EA29DCKR requirements.
6.How does Aetrix verify that TLV809EA29DCKR is sourced from the original manufacturer or authorized distributors?
All TLV809EA29DCKR 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 TLV809EA29DCKR meets industry standards.
7.What is the process for return or replacement of TLV809EA29DCKR?
All TLV809EA29DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV809EA29DCKR, 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 TLV809EA29DCKR part is unused and in its original packaging.
Return procedure for TLV809EA29DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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