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Texas Instruments TLV803EA18DPWR
- Part No.:
- TLV803EA18DPWR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TLV803EA18DPWR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
TLV803EA18DPWR 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 1.8 V ±0.5% threshold voltage, 250 nA typical supply current, 40 µs fixed reset delay, and operates across –40°C to +125°C - enabling use in battery-powered IoT sensors and industrial edge controllers.
For engineers reviewing the TLV803EA18DPWR datasheet, TLV803EA18DPWR pinout, TLV803EA18DPWR application, or TLV803EA18DPWR equivalent, key selection criteria include its X2SON-5 (DPW) package footprint, guaranteed RESET assertion down to 0.7 V VDD, ±0.5% threshold accuracy over temperature, and integrated glitch immunity against sub-10 µs transients on the supply rail.
Technical Context
The TLV803EA18DPWR implements a precision bandgap-referenced comparator with built-in hysteresis (±0.9–1.5%) to prevent chatter during slow-rising/falling VDD transitions. Its internal timer enforces a fixed 40 µs reset timeout after VDD exceeds the rising threshold (VIT+ = VIT– + VHYS), ensuring deterministic deassertion timing independent of external RC networks.
Unlike push-pull variants, the open-drain output requires an external pull-up resistor but supports wired-OR configurations and mixed-voltage system interfacing. The DPW package includes a thermal pad (Pin 3) and manual reset input (MR, Pin 2), enabling system-level reset initiation without VDD dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 0.7 V to 6 V - ensures valid RESET state even during deep brownout or low-energy startup sequences. |
| Threshold Voltage (VIT–) | 1.8 V ±0.5% (typical) - enables precise monitoring of 1.8 V logic rails with minimal margin loss in safety-critical firmware initialization. |
| Reset Delay (tD) | 40 µs (variant B) - provides sufficient time for power stabilization before releasing microcontroller reset, eliminating need for external timing components. |
| Quiescent Current (IDD) | 250 nA (typical) at 3.3 V - extends battery life in always-on sensor nodes by reducing standby power by >90% vs. legacy supervisors. |
| Glitch Immunity (tGI) | 10 µs (typical) - rejects fast supply transients (e.g., switching noise, ESD coupling) without false triggering. |
| Operating Temperature | –40°C to +125°C - supports deployment in under-hood automotive modules and factory-floor PLCs without derating. |
| Output Topology | Open-drain, active-low - allows level-shifting, multi-source reset arbitration, and compatibility with 1.2–5.5 V I/O domains via external pull-up. |
Pinout & Package
X2SON-5 (DPW) package: 0.8 mm × 0.8 mm, 0.35 mm height, thermal pad (Pin 3) recommended to be connected to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 5) | Power Input | Monitored supply rail; powers internal reference, comparator, and timer - must be bypassed with ≥0.1 µF capacitor. |
| GND (Pin 4) | Ground Reference | Analog and digital ground return; connects to PCB ground plane to minimize noise coupling into threshold detection. |
| PAD (Pin 3) | Thermal Pad | Non-electrical thermal interface; soldering improves junction-to-board thermal resistance by ~320°C/W (vs. 457°C/W unconnected). |
| MR (Pin 2) | Manual Reset Input | Active-low asynchronous reset trigger; internal 100 kΩ pull-up enables floating operation when unused. |
| RESET (Pin 1) | Open-Drain Output | Asserts low during VDD < 1.8 V or MR low; requires external pull-up (10 kΩ typical) to host voltage domain. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 250 nA typical supply current enables >10-year battery life in coin-cell–powered devices like smart meters and wearables. |
| High Threshold Accuracy | ±0.5% typical VIT– tolerance eliminates calibration overhead in precision 1.8 V rail monitoring for FPGA configuration circuits. |
| Guaranteed Operation to 0.7 V | Valid RESET assertion down to 0.7 V VDD ensures deterministic behavior during cold-start or energy-harvesting scenarios. |
| Integrated Glitch Filter | 10 µs minimum pulse rejection prevents false resets from switching regulator ripple or transient coupling on VDD. |
| Wide Temp Range Support | Full specification from –40°C to +125°C enables single-BOM deployment across consumer, industrial, and automotive temperature grades. |
Applications
| Electricity Meters | Factory Automation Sensors |
|---|---|
Use Scenario: Monitoring 1.8 V MCU core rail during power-up and grid-induced brownouts in Class 0.2 smart meters. IC Role / Device Role / Timing Role: Voltage supervisor providing POR and brownout reset signal to ARM Cortex-M4 microcontroller. Use Value: 40 µs fixed delay ensures stable clock and memory initialization before firmware execution begins; ±0.5% threshold prevents premature release during marginal AC line conditions. | Use Scenario: Supervising 1.8 V supply to wireless sensor node SoC in harsh industrial environments with high EMI. IC Role / Device Role / Timing Role: Open-drain reset generator interfaced to 3.3 V host controller via 10 kΩ pull-up, enabling shared reset bus. Use Value: 250 nA IQ extends 10-year battery life; 10 µs glitch immunity rejects motor-drive switching noise coupled onto 1.8 V rail. |
| Portable Medical Devices | Building Automation Controllers |
Use Scenario: Ensuring safe boot sequence for 1.8 V BLE SoC in handheld diagnostic tools powered by Li-ion cells. IC Role / Device Role / Timing Role: Low-voltage supervisor asserting reset until battery voltage stabilizes above 1.8 V during charge/discharge cycles. Use Value: 0.7 V VPOR guarantees reset validity even during deep discharge recovery; X2SON-5 footprint saves space in compact enclosures. | Use Scenario: Monitoring auxiliary 1.8 V supply for HVAC controller MCU in temperature-variable building environments. IC Role / Device Role / Timing Role: High-accuracy supervisor operating across –40°C to +125°C ambient, interfaced to 3.3 V FPGA reset input. Use Value: ±0.5% VIT– tolerance maintains reset margin over full temperature range; MR pin enables remote firmware-triggered reset via GPIO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB18DPWR | Same 1.8 V threshold, but 10 ms reset delay (variant C) instead of 40 µs. | Suitable for systems requiring longer reset hold time - e.g., FPGAs with slower configuration clocks. | Select TLV803EB18DPWR only if extended delay is required; TLV803EA18DPWR is optimal for fast-boot MCUs. |
| MAX803SUR18+T | 1.8 V threshold, push-pull active-low output, SOT23-3 package, 140 µs delay, 1.6 µA max IQ. | Larger footprint and higher quiescent current limit use in ultra-low-power designs; no MR pin or X2SON option. | Choose MAX803SUR18+T only for legacy SOT23-3 board compatibility; TLV803EA18DPWR offers superior size, IQ, and feature set. |
Compared with TLV803EB18DPWR and MAX803SUR18+T, TLV803EA18DPWR delivers the shortest reset delay (40 µs), smallest package (X2SON-5), lowest power (250 nA), and added MR functionality - making it the preferred choice for space-constrained, battery-sensitive, and fast-boot applications.
Availability
TLV803EA18DPWR is available at Aetrix Electronics and suitable for electricity meters, factory automation sensors, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV803EA18DPWR 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 for industrial, automotive, and personal electronics markets.
The TLV803E series belongs to TI's precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset generation in battery-operated and thermally demanding applications.
FAQ
What is the exact reset threshold voltage of TLV803EA18DPWR?
The TLV803EA18DPWR has a factory-programmed falling threshold voltage (VIT–) of 1.8 V with ±0.5% typical accuracy across –40°C to +125°C. This value is laser-trimmed during production and specified in Section 7.5 of the datasheet under Electrical Characteristics.
Does TLV803EA18DPWR require an external pull-up resistor on the RESET pin?
Yes, TLV803EA18DPWR uses an open-drain active-low output and requires an external pull-up resistor (typically 4.7 kΩ to 10 kΩ) to the target logic voltage domain. Unlike push-pull variants such as TLV809E, this topology enables wired-OR reset buses and mixed-voltage interfacing.
What is the function of the MR pin on TLV803EA18DPWR?
The MR (Manual Reset) pin (Pin 2) is an active-low input that forces RESET assertion regardless of VDD level. When pulled low, it initiates a reset after propagation delay; release triggers deassertion after the 40 µs delay. An internal 100 kΩ pull-up allows MR to float when unused.
Can TLV803EA18DPWR operate reliably below 1.0 V supply voltage?
Yes - TLV803EA18DPWR guarantees valid RESET assertion down to VPOR = 0.7 V, meaning its output state remains controlled and predictable even during deep brownout or energy-harvesting startup. Below 0.7 V, the output becomes undefined per datasheet Section 7.5.
Is the thermal pad (PAD) on TLV803EA18DPWR electrically connected?
No, the thermal pad (Pin 3) on TLV803EA18DPWR is not electrically connected to any internal circuitry. It serves solely as a thermal interface and may be left unconnected or soldered to GND for improved heat dissipation - no electrical biasing is required or recommended.
TLV803EA18DPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.8V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 130ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-X2SON (0.8x0.8)
TLV803EA18DPWR FAQ
1.How can I place an order for TLV803EA18DPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV803EA18DPWR 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 TLV803EA18DPWR reliable?
The price and inventory of TLV803EA18DPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV803EA18DPWR is usually 5 days.
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TLV803EA18DPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV803EA18DPWR 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 TLV803EA18DPWR?
For technical support, including TLV803EA18DPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV803EA18DPWR requirements.
6.How does Aetrix verify that TLV803EA18DPWR is sourced from the original manufacturer or authorized distributors?
All TLV803EA18DPWR 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 TLV803EA18DPWR meets industry standards.
7.What is the process for return or replacement of TLV803EA18DPWR?
All TLV803EA18DPWR units undergo pre-shipment inspection (PSI). If there is an issue with TLV803EA18DPWR, 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 TLV803EA18DPWR part is unused and in its original packaging.
Return procedure for TLV803EA18DPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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