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Diodes Incorporated APX803L20-40W5-7
- Part No.:
- APX803L20-40W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-40W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,562
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Product details
Overview
APX803L20-40W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.0V threshold detection with ±1.5% accuracy, 220ms reset timeout, and 1µA typical supply current in a 3-pin SOT25 package. It delivers active-low open-drain reset signaling for power monitoring in battery-powered embedded systems.
For engineers reviewing the APX803L20-40W5-7 datasheet, APX803L20-40W5-7 pinout, APX803L20-40W5-7 application, or APX803L20-40W5-7 equivalent, this device supports critical low-power system initialization, brown-out detection, and reset timing control in portable electronics, industrial controllers, and IoT edge nodes where supply efficiency and voltage stability are essential.
Technical Context
The APX803L20-40W5-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.0V threshold, triggering an active-low open-drain RESET signal when VCC drops below that level. Its internal hysteresis (0.01 × VTH) prevents chatter during recovery.
It features factory-programmed 220ms reset timeout (tDELAY), operates from 0.9V to 5.5V supply, and maintains stable performance across –40°C to +85°C ambient temperature. The SOT25 package enables compact PCB layout while supporting 20mA output sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.0V ±1.5% - ensures reliable detection of 2.0V supply rail collapse with minimal false triggers |
| Supply Current | 1.0µA typical - imposes negligible load on battery or low-power rails |
| Reset Timeout | 220ms (min–max: 143–297ms) - provides sufficient hold time for µP initialization sequences |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration and flexible pull-up voltage selection |
| Operating Voltage | 0.9V to 5.5V - supports wide input range including single-cell Li-ion and 3.3V/5V logic domains |
| Response Time | 20µs max - guarantees fast reset assertion during rapid VCC droop events |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade operation without derating |
Pinout & Package
SOT25 is a 3-pin surface-mount package with gull-wing leads, optimized for automated assembly and thermal dissipation (θJA = 200°C/W). Pin 1 = GND, Pin 2 = RESET (open-drain output), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground node for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Active-low open-drain output; requires external pull-up to define logic high level and drive strength |
| 3 | VCC | Power supply input; powers internal circuitry and sets operating voltage window for detection |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.0V threshold | Factory-trimmed internal reference eliminates need for external resistive divider or calibration |
| 220ms reset timeout | Guaranteed minimum delay ensures µP completes power-on reset sequence before release |
| 1µA supply current | Enables multi-year operation from coin-cell batteries in always-on monitoring applications |
| ±1.5% threshold accuracy | Reduces design margin requirements and improves system-level voltage tolerance budget |
| Open-drain output | Supports shared reset bus architecture and mixed-voltage system interfacing |
Applications
| Smartphone Power Sequencing | Industrial PLC Controller Supervision |
|---|---|
Use Scenario: Monitors main PMIC output during cold start and deep-sleep wake-up cycles. IC Role / Device Role / Timing Role: Voltage detector generating active-low reset pulse to hold application processor in reset until core rail stabilizes at ≥2.0V. Use Value: Prevents illegal state entry during marginal VCC conditions; 220ms timeout aligns with SoC boot ROM timing requirements. |
Use Scenario: Validates 3.3V I/O rail integrity before enabling fieldbus communication modules. IC Role / Device Role / Timing Role: Standalone supervisor asserting reset to FPGA-based control logic upon undervoltage event. Use Value: Eliminates need for discrete resistor network and op-amp comparator; 1µA quiescent current extends uptime in battery-backed fail-safe mode. |
| Wireless Sensor Node Boot Control | Medical Infusion Pump Safety Monitoring |
Use Scenario: Verifies CR2032 battery voltage remains above 2.0V prior to BLE radio activation. IC Role / Device Role / Timing Role: Low-power supervisor enabling ultra-low-duty-cycle wake-up and deterministic reset release. Use Value: 1µA supply current extends shelf life; ±1.5% threshold ensures consistent detection across temperature and aging. |
Use Scenario: Cross-checks dual-redundant 2.0V reference supplies feeding analog front-end ADCs. IC Role / Device Role / Timing Role: Independent fault monitor triggering hardware reset if either supply dips below safe operating level. Use Value: Meets IEC 62304 Class B software safety requirements via deterministic, non-software-dependent reset assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L20-20SA-7 | SOT23 package, same 2.0V threshold and 220ms timeout, but 200°C/W θJA vs. SOT25's 200°C/W - identical thermal rating | Same functional behavior; smaller footprint suits space-constrained designs but limits heat spreading | Select when board area is constrained and thermal mass is sufficient for ambient ≤85°C |
| TLV803EA20DBZR | Texas Instruments part with 2.0V threshold, 200ms timeout (±20%), 0.5µA supply current, and SOT23-3 package | Lower quiescent current but looser timeout tolerance; not AEC-Q100 qualified | Prefer for ultra-low-IQ designs where ±20% timeout variation is acceptable and automotive qualification is unnecessary |
Compared with APX803L20-40W5-7, the SA variant offers identical electrical specs in a smaller footprint, while the TLV803EA20DBZR trades tighter timeout control for lower IQ-making the APX803L20-40W5-7 optimal for industrial applications requiring guaranteed 220ms release timing and robust thermal performance in SOT25.
Availability
APX803L20-40W5-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, industrial PLC controller supervision, and wireless sensor node boot control requiring stable component supply and long-term production continuity.
Supply support for APX803L20-40W5-7 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
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.
The APX803L series targets ultra-low-power supervisory functions in battery-operated and energy-sensitive systems, emphasizing precision threshold accuracy, minimal supply current, and robust industrial temperature operation.
FAQ
What is the exact reset timeout value for APX803L20-40W5-7?
The APX803L20-40W5-7 has a nominal reset active timeout of 220ms, with guaranteed minimum and maximum values of 143ms and 297ms respectively over temperature and process variation. This is factory-programmed and does not require external timing components.
Can APX803L20-40W5-7 be used with a 1.8V supply rail?
Yes - the device operates down to 0.9V supply and detects VCC relative to its fixed 2.0V threshold. When monitoring a 1.8V rail, it will assert RESET continuously since VCC never reaches the threshold; it is intended for rails ≥2.0V, such as 2.5V, 3.3V, or 5.0V domains.
Does APX803L20-40W5-7 require an external pull-up resistor on the RESET pin?
Yes - the RESET pin is open-drain and must be pulled up externally to a valid logic-high voltage (e.g., same as monitored VCC or another compatible rail). Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Is APX803L20-40W5-7 compliant with RoHS and halogen-free standards?
Yes - it is fully RoHS 3 (2015/863/EU) compliant, lead-free, and halogen- and antimony-free per Diodes Incorporated's "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb), with documentation available at diodes.com/quality/product-definitions.
APX803L20-40W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 143ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
APX803L20-40W5-7 FAQ
1.How can I place an order for APX803L20-40W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-40W5-7 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 APX803L20-40W5-7 reliable?
The price and inventory of APX803L20-40W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-40W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-40W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-40W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-40W5-7?
APX803L20-40W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-40W5-7 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 APX803L20-40W5-7?
For technical support, including APX803L20-40W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-40W5-7 requirements.
6.How does Aetrix verify that APX803L20-40W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-40W5-7 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 APX803L20-40W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-40W5-7?
All APX803L20-40W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-40W5-7, 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 APX803L20-40W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-40W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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