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Diodes Incorporated APX803L20-20W5-7
- Part No.:
- APX803L20-20W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-20W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,009
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Product details
Overview
APX803L20-20W5-7 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, open-drain active-low output, and 1µA typical supply current. It monitors VCC in battery-powered devices, portable instrumentation, and embedded controllers requiring reliable power-on reset functionality.
For engineers reviewing the APX803L20-20W5-7 datasheet, APX803L20-20W5-7 pinout, APX803L20-20W5-7 application, or APX803L20-20W5-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current operation in sleep modes, and SOT25 package compatibility with high-density PCB layouts.
Technical Context
The APX803L20-20W5-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator drives an open-drain NMOS output stage capable of sinking ≥3.5mA at 0.4V max VOL.
Reset assertion occurs within 20µs of VCC dropping below 2.0V (±1.5%), and release requires VCC to exceed 2.01V (typical hysteresis). The fixed 220ms timeout (143–297ms over -40°C to +85°C) is generated by an on-chip RC timing circuit, eliminating external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.0V ±1.5% - ensures reliable reset initiation across industrial temperature range (-40°C to +85°C) |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell-powered IoT sensors |
| Reset Timeout | 220ms nominal (143–297ms) - provides sufficient hold time for µP initialization sequences |
| Output Type | Open-drain, active-low - supports wired-OR reset bus architectures and flexible pull-up voltage selection |
| Response Time | 20µs max - guarantees fast fault detection before system state corruption |
| Operating Voltage | 0.9V to 5.5V - supports direct monitoring of 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails |
| Hysteresis | 0.01×VTH (20mV) - prevents chatter during slow-rising/falling supply transitions |
Pinout & Package
SOT25 (5-pin) package with exposed pad for thermal enhancement; pin 4 and 5 are no-connect (NC), enabling layout flexibility without functional compromise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up resistor to host VCC rail |
| 3 | VCC | Power supply input; powers internal reference, comparator, and timing circuitry |
| 4 | NC | No internal connection; may be left floating or tied to GND for mechanical stability |
| 5 | NC | No internal connection; electrically isolated; no routing required |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.0V threshold | Eliminates external resistor network; reduces BOM count and layout area in space-constrained designs |
| 220ms factory-programmed delay | Guarantees consistent reset duration without capacitor tolerance drift or temperature coefficient errors |
| 1µA supply current | Minimizes standby power draw in always-on edge nodes, extending battery life by >30% vs. legacy supervisors |
| ±1.5% threshold accuracy | Reduces margining requirements in low-voltage systems (e.g., 2.0V ±30mV allows tighter VCC regulation) |
| SOT25 package | Provides 5-pin footprint with NC pins for improved thermal dissipation and mechanical robustness vs. 3-pin SOT23 |
Applications
| Smart Wearables | Industrial PLC Modules |
|---|---|
Use Scenario: Monitoring 2.0V LDO output powering BLE SoC during cold-start and brownout conditions. IC Role / Device Role / Timing Role: Voltage supervisor generating clean, debounced reset pulse to initialize ARM Cortex-M4 core. Use Value: 220ms timeout ensures full flash memory boot sequence completes before peripheral enable; 1µA quiescent current extends coin-cell life to 5+ years. | Use Scenario: Supervising 2.0V auxiliary rail feeding FPGA configuration logic in programmable logic controllers. IC Role / Device Role / Timing Role: Fault-detection interface asserting reset to halt I/O initialization until stable VCC is confirmed. Use Value: ±1.5% threshold accuracy prevents spurious resets during transient load steps; SOT25 package withstands reflow and vibration stress in industrial environments. |
| Medical Sensor Nodes | Automotive Body Control Units |
Use Scenario: Validating 2.0V supply to ultra-low-power ADC and RF transceiver in implantable glucose monitors. IC Role / Device Role / Timing Role: Power-good monitor triggering wake-up interrupt only after VCC exceeds 2.01V with hysteresis. Use Value: 20µs response time captures sub-millisecond supply dips; open-drain output interfaces directly with 1.8V logic without level shifters. | Use Scenario: Reset coordination for 2.0V CAN transceiver power domain during vehicle ignition sequencing. IC Role / Device Role / Timing Role: System-level supervisor ensuring transceiver enters operational mode only after stable bias is established. Use Value: 220ms timeout aligns with ISO 16750-2 cold-cranking recovery profiles; RoHS/lead-free compliance meets automotive material requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E20DBVR | 2.0V threshold, ±2.5% accuracy, 200ms timeout, SOT23-3 package, 0.6µA IQ | Lacks NC pins; lower accuracy increases risk of false reset in tight-margin 2.0V systems | Preferred where board space is critical and 2.5% tolerance is acceptable |
| MAX6326UR20+T | 2.0V threshold, ±1.0% accuracy, 200ms timeout, SOT23-3, 1.5µA IQ | Higher supply current reduces battery life; no NC pins limits thermal relief options | Chosen when highest threshold precision is mandatory and SOT25 footprint is not required |
Compared with TLV803E20DBVR and MAX6326UR20+T, the APX803L20-20W5-7 delivers superior thermal performance via SOT25's dual NC pins, tighter ±1.5% threshold control than the TLV803, and lower IQ than the MAX6326-making it optimal for thermally constrained, long-life, and accuracy-sensitive 2.0V supervision.
Availability
APX803L20-20W5-7 is available at Aetrix Electronics and suitable for smart wearables, industrial PLC modules, and medical sensor nodes requiring stable component supply, guaranteed long-term availability, and automotive-grade traceability.
Supply support for APX803L20-20W5-7 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 company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in certified facilities compliant with IATF 16949 and ISO 9001.
The APX803L series targets ultra-low-power supervisory functions in portable, battery-operated, and energy-harvesting systems-emphasizing minimal IQ, high threshold accuracy, and compact packaging for space-constrained embedded designs.
FAQ
What is the exact reset timeout value for APX803L20-20W5-7 across temperature?
The APX803L20-20W5-7 has a nominal reset timeout of 220ms at +25°C, with guaranteed minimum/maximum values of 143ms and 297ms over the full operating range of -40°C to +85°C, as specified in the Electrical Characteristics table of DS38171 Rev. 3-2.
Can pin 4 and pin 5 of the SOT25 package be used for thermal relief or grounding?
Pin 4 and pin 5 are internally unconnected (NC) and may be tied to GND or left floating per PCB layout requirements; doing so improves thermal conduction and mechanical anchoring without affecting electrical function, as confirmed in the Pin Descriptions section of the datasheet.
Does APX803L20-20W5-7 require an external pull-up resistor on the RESET pin?
Yes-the RESET pin is open-drain active-low and requires an external pull-up resistor to the host system's logic rail (e.g., 1.8V, 3.3V, or 5V); typical values range from 10kΩ to 100kΩ depending on rise-time and bus capacitance, as shown in the Typical Applications Circuit.
Is APX803L20-20W5-7 qualified for automotive applications under AEC-Q100?
No-APX803L20-20W5-7 is not AEC-Q100 qualified; Diodes Incorporated offers automotive-grade variants (e.g., APX803L20Q) with PPAP capability and IATF 16949 manufacturing, but this specific part number is intended for industrial and consumer applications per the product definitions page.
APX803L20-20W5-7 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:
- 2V
- 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
APX803L20-20W5-7 FAQ
1.How can I place an order for APX803L20-20W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-20W5-7 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 APX803L20-20W5-7 reliable?
The price and inventory of APX803L20-20W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-20W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-20W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-20W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-20W5-7?
APX803L20-20W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-20W5-7 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 APX803L20-20W5-7?
For technical support, including APX803L20-20W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-20W5-7 requirements.
6.How does Aetrix verify that APX803L20-20W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-20W5-7 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 APX803L20-20W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-20W5-7?
All APX803L20-20W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-20W5-7, 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 APX803L20-20W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-20W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L20-20W5-7 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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