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Texas Instruments TLV803EA22DCKR
- Part No.:
- TLV803EA22DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
TLV803EA22DCKR.pdf
- Description:
- LOW-POWER VOLTAGE SUPERVISOR (RE
- Quantity:
- Payment:
- Shipping:
Inventory:2,768
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Product details
Overview
TLV803EA22DCKR from Texas Instruments is an open-drain, active-low voltage supervisor IC designed for reliable power-on reset and brownout detection in ultra-low-power systems. It features a 2.2 V factory-programmed threshold (±0.5% typical accuracy), 250 nA typical supply current, 40 µs fixed reset delay, and operates across –40°C to +125°C. It is used in battery-powered microcontrollers, FPGA configuration circuits, and portable medical sensors where deterministic reset assertion below VPOR = 0.7 V is critical.
For engineers reviewing the TLV803EA22DCKR datasheet, TLV803EA22DCKR pinout, TLV803EA22DCKR application, or TLV803EA22DCKR equivalent, key selection criteria include its SC-70 (DCK) 3-pin package, guaranteed RESET assertion down to 0.7 V supply, ±0.5% threshold accuracy over temperature, 40 µs glitch-immune response, and compatibility with manual reset (MR) input in X2SON variants - though MR is not present in this DCK variant.
Technical Context
The TLV803EA22DCKR implements a precision bandgap-referenced comparator with built-in hysteresis (VHYS = 0.9–1.5%) to prevent chatter during slow-rising or noisy VDD transitions. Its open-drain output requires an external pull-up resistor and remains asserted low for exactly 40 µs after VDD rises above VIT+ = VIT– + VHYS.
It integrates glitch immunity filtering (tGI = 10 µs typical) that ignores transients shorter than the specified pulse width, ensuring robust operation in electrically noisy environments such as industrial sensor nodes or metering front-ends. The device achieves full functionality at VDD ≥ 0.7 V (VPOR), enabling early system initialization before main regulators stabilize.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current (IDD) | 250 nA typical at 3.3 V - enables multi-year battery life in always-on IoT endpoints. |
| Threshold Voltage (VIT–) | 2.2 V ±0.5% (typical) - ensures precise brownout detection for 2.5 V/3.3 V rails without calibration. |
| Reset Delay (tD) | 40 µs fixed - provides minimal but sufficient hold time for fast-boot MCUs and FPGAs. |
| Operating Voltage Range | 0.7 V to 6 V - guarantees defined reset state during deep brownout and supports wide-input LDOs. |
| Output Topology | Open-drain, active-low - allows wired-OR reset bus sharing and flexible pull-up voltage selection. |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor metering use. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for board-level surge immunity. |
Pinout & Package
TLV803EA22DCKR is housed in a 3-pin SC-70 (DCK) package (2.00 mm × 1.25 mm body), pin-compatible with SOT-23-3 but with smaller footprint and thermal profile. Pin 1 = GND, Pin 2 = RESET (open-drain output), Pin 3 = VDD - confirmed per TI SLVSES2J Figure 6-2 and Table 6-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (GND) | Ground reference | Return path for internal bandgap, comparator, and timer; must be low-impedance to ensure threshold stability. |
| Pin 2 (RESET) | Open-drain active-low output | Sinks current when asserted; requires external pull-up (e.g., 10 kΩ to 3.3 V); compatible with 1.8 V–5 V logic families. |
| Pin 3 (VDD) | Supply and sense input | Monitored rail input and sole power source; bypass capacitor (0.1 µF) required near pin for noise rejection and POR integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 250 nA typical - reduces standby power in coin-cell–powered devices by >90% vs. legacy supervisors. |
| Precision voltage threshold | ±0.5% typical accuracy over –40°C to +125°C - eliminates need for external trimming in high-reliability applications. |
| Glitch-immune detection | 10 µs minimum pulse rejection - prevents false resets from EFT bursts or switching regulator ripple. |
| Low VPOR operation | 0.7 V guaranteed functional supply - enables reset assertion during ultra-deep brownout, prior to MCU core lockup. |
| SC-70 compact packaging | 2.00 mm × 1.25 mm footprint - saves >35% board area vs. SOT-23-3, critical for wearables and hearing aids. |
Applications
| Smart Electricity Meter | Portable Medical Sensor |
|---|---|
|
Use Scenario: Monitors Li-ion battery voltage during cold-weather deployment to prevent firmware corruption during low-VDD brownout. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to MCU and RF transceiver upon VDD < 2.2 V. Use Value: 40 µs delay ensures stable clock startup before firmware execution; 250 nA IDD extends 10-year battery life. |
Use Scenario: Ensures reliable power-on reset of an ultra-low-power ECG analog front-end and BLE SoC. IC Role / Device Role / Timing Role: Open-drain RESET signal shared across multiple domains (AFE, digital, radio) via single pull-up. Use Value: 2.2 V threshold matches AFE's minimum operating voltage; SC-70 package fits sub-10 mm² wearable PCB. |
| Industrial PLC I/O Module | Set-Top Box Power Sequencing |
|
Use Scenario: Detects undervoltage on isolated 3.3 V auxiliary rail powering fieldbus interface ASICs. IC Role / Device Role / Timing Role: Brownout detector triggering hardware reset before communication errors propagate. Use Value: ±0.5% threshold accuracy prevents nuisance trips in 85–264 VAC input designs with wide LDO tolerance. |
Use Scenario: Coordinates power-up sequence between main SoC, DDR memory, and HDMI PHY in consumer AV equipment. IC Role / Device Role / Timing Role: Reset generator holding SoC in reset until 3.3 V rail stabilizes above 2.2 V for ≥40 µs. Use Value: 0.7 V VPOR ensures valid reset assertion even during slow AC adapter ramp-up or hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA22DBVR | SOT-23-3 (DBZ) package; identical electrical specs; pin 1 = GND, same pinout as DCK. | Larger footprint (2.90 mm × 1.30 mm); higher thermal resistance (RθJA = 254.8°C/W vs. 300.5°C/W). | Choose DBVR for hand-soldering or legacy layout compatibility; DCK preferred for space-constrained designs. |
| MAX803SUR22+T | Push-pull active-low output; 1.6 µA max IDD; ±2.5% threshold accuracy; no VPOR < 1 V guarantee. | Higher power consumption; lower accuracy limits use in precision battery gauging or low-VDD MCU systems. | Choose MAX803 for cost-sensitive, non-battery applications where 40 µs delay and 250 nA are not required. |
Compared with TLV803EA22DCKR, TLV803EA22DBVR offers identical functionality in a larger, more manufacturable package, while MAX803SUR22+T trades ultra-low power and precision for broader legacy availability and push-pull drive - making DCK optimal for next-gen portable and automotive edge nodes.
Availability
TLV803EA22DCKR is available at Aetrix Electronics and suitable for smart metering, portable medical instrumentation, industrial PLC I/O modules, and set-top box power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLV803EA22DCKR 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 TLV803E family was engineered to replace legacy reset ICs with superior accuracy, ultra-low IQ, and extended temperature operation - specifically targeting battery longevity and reliability in harsh-environment edge devices.
FAQ
What is the exact reset threshold voltage of TLV803EA22DCKR?
The TLV803EA22DCKR has a factory-programmed falling threshold voltage (VIT–) of 2.2 V with ±0.5% typical accuracy over –40°C to +125°C, as specified in TI SLVSES2J Section 7.5. This value is laser-trimmed during production and does not require external components or calibration.
Does TLV803EA22DCKR support manual reset (MR) functionality?
No, TLV803EA22DCKR does not include a manual reset (MR) pin. MR is only available on the 5-pin X2SON (DPW) package variants of the TLV803E family. The SC-70 (DCK) package has only three terminals: GND, RESET, and VDD.
What is the minimum supply voltage at which TLV803EA22DCKR guarantees correct reset behavior?
TLV803EA22DCKR guarantees defined output state down to VPOR = 0.7 V, meaning it will assert RESET reliably even when VDD drops to 0.7 V. Below this voltage, the output becomes undefined - a critical design boundary for ultra-low-power brownout recovery.
Can TLV803EA22DCKR drive a 10 kΩ pull-up resistor to 5 V?
Yes. TLV803EA22DCKR's open-drain RESET output is rated for 6 V absolute maximum, and its VOL is ≤300 mV at IOUT = 2 mA (VDD = 3.3 V). With a 10 kΩ pull-up to 5 V, sink current is ~500 µA - well within specification and ensuring clean logic-low assertion.
Is TLV803EA22DCKR pin-compatible with MAX803 series devices?
Yes - TLV803EA22DCKR is explicitly pin-to-pin compatible with MAX803/809/810 in SC-70 and SOT-23 packages per TI SLVSES2J Section 1. This allows direct replacement without PCB changes, provided the open-drain topology and 250 nA IQ align with system requirements.
TLV803EA22DCKR 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:
- 2.25V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 130ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
TLV803EA22DCKR FAQ
1.How can I place an order for TLV803EA22DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV803EA22DCKR 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 TLV803EA22DCKR reliable?
The price and inventory of TLV803EA22DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV803EA22DCKR is usually 5 days.
3.What payment methods are accepted for TLV803EA22DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV803EA22DCKR transactions.
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4.How is shipping managed for TLV803EA22DCKR?
TLV803EA22DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV803EA22DCKR 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 TLV803EA22DCKR?
For technical support, including TLV803EA22DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV803EA22DCKR requirements.
6.How does Aetrix verify that TLV803EA22DCKR is sourced from the original manufacturer or authorized distributors?
All TLV803EA22DCKR 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 TLV803EA22DCKR meets industry standards.
7.What is the process for return or replacement of TLV803EA22DCKR?
All TLV803EA22DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV803EA22DCKR, 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 TLV803EA22DCKR part is unused and in its original packaging.
Return procedure for TLV803EA22DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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