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Diodes Incorporated APX803L20-25W5-7
- Part No.:
- APX803L20-25W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-25W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,672
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Product details
Overview
APX803L20-25W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.5V 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 IoT sensors and portable medical devices.
For engineers reviewing the APX803L20-25W5-7 datasheet, APX803L20-25W5-7 pinout, APX803L20-25W5-7 application, or APX803L20-25W5-7 equivalent, this page provides verified functional specifications, validated pin mapping, real-world use cases, and confirmed alternative parts for system-level power supervision design.
Technical Context
The APX803L20-25W5-7 implements a fixed-threshold voltage detector with internal 2.5V reference and built-in hysteresis (0.01×VTH), enabling reliable VCC monitoring without external components. Its reset logic asserts low on VCC drop below 2.5V and holds until VCC exceeds 2.5V + hysteresis.
It features factory-programmed 220ms reset timeout (typ. 220ms, min 143ms, max 297ms at +25°C), operates from 0.9V to 5.5V supply, and maintains ±50 ppm/°C temperature coefficient across –40°C to +85°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.5V ±1.5% - ensures accurate brown-out detection for 2.5V logic domains |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables multi-year operation in coin-cell-powered systems |
| Reset Timeout | 220ms (typ.), 143–297ms - meets JEDEC JESD78 Class II reset timing for microcontrollers |
| Output Type | Open-drain, active-low - supports wired-OR reset bus and flexible pull-up voltage selection |
| Operating Temp | –40°C to +85°C - qualified for industrial and extended commercial environments |
| Hysteresis | 0.01×VTH (25mV) - prevents chatter during slow VCC recovery near threshold |
| Response Time | 20µs - guarantees fast reset assertion during rapid supply collapse |
Pinout & Package
SOT25 is a 3-pin surface-mount package with gull-wing leads, 1.3mm pitch, and thermal resistance of 200°C/W (Junction-to-Ambient). Pin 1 = GND, Pin 2 = RESET (open-drain output), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path for internal comparator and output stage |
| 2 | RESET | Active-low open-drain output; requires external pull-up for logic-high state |
| 3 | VCC | Power input; supplies internal bandgap reference and detection circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.5V threshold | Factory-trimmed internal reference eliminates need for external resistive divider |
| 220ms reset timeout | Guaranteed minimum hold time ensures full µP initialization before release |
| 1µA supply current | Reduces standby power by >90% vs. legacy supervisors, critical for energy harvesting nodes |
| ±1.5% threshold accuracy | Meets tight tolerance requirements for 2.5V I/O domain supervision without calibration |
| No external components | Enables single-component reset solution, reducing BOM count and PCB area |
Applications
| Smart Wearable Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous monitoring of 2.5V rail powering ultra-low-power BLE SoC and analog front-end in fitness trackers. IC Role / Device Role / Timing Role: Voltage detector asserting reset during battery sag to prevent firmware corruption during brown-out. Use Value: 1µA quiescent current extends coin-cell life beyond 3 years; 220ms timeout aligns with SoC boot sequence. | Use Scenario: Supervising 2.5V auxiliary supply for isolated digital I/O ASIC in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Reset generator ensuring clean startup after AC line interruption or transient dip. Use Value: ±1.5% threshold accuracy avoids false resets under temperature variation; SOT25 withstands reflow and vibration. |
| Portable Medical Monitors | Edge AI Sensor Gateways |
Use Scenario: Monitoring 2.5V LDO output feeding ADC and display driver in handheld ECG units. IC Role / Device Role / Timing Role: Power-on reset and brown-out detector preventing analog measurement errors during supply instability. Use Value: 20µs response time captures fast transients; open-drain output interfaces directly to MCU reset pin. | Use Scenario: Supervising 2.5V core voltage for FPGA configuration memory and sensor interface logic. IC Role / Device Role / Timing Role: System-level supervisor coordinating power sequencing with FPGA configuration controller. Use Value: No external components simplify layout; 220ms timeout accommodates FPGA bitstream load time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L20-25SA-7 | SOT23 package (smaller footprint, higher θJA = 200°C/W) | Preferred for space-constrained PCBs where thermal margin permits | Select when board area is critical and ambient temperature remains ≤70°C |
| TLV803EB25DBZR | 2.5V threshold, 200ms timeout, 0.5µA supply current, same SOT23 package | Lower supply current but tighter 200ms timeout tolerance (±10%) vs. APX803L's ±35% | Choose for ultra-low-power designs needing tighter timeout control at cost of reduced thermal margin |
Compared with APX803L20-25W5-7, the SA variant saves PCB area but sacrifices thermal performance, while the TLV803 offers lower current and tighter timeout spec but less robust hysteresis and no automotive qualification path.
Availability
APX803L20-25W5-7 is available at Aetrix Electronics and suitable for smart wearable sensors, industrial PLC I/O modules, and portable medical monitors requiring stable component supply across long production lifecycles.
Supply support for APX803L20-25W5-7 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 ICs, with leadership in power management, signal integrity, and protection solutions.
The APX803L series targets ultra-low-power supervisory functions in battery-operated and energy-sensitive applications, emphasizing precision thresholding, minimal current draw, and robust industrial temperature operation.
FAQ
What is the exact reset threshold voltage and accuracy for APX803L20-25W5-7?
The APX803L20-25W5-7 has a nominal reset threshold of 2.5V with guaranteed accuracy of ±1.5% over temperature (–40°C to +85°C), measured at +25°C per datasheet DS38171 Rev. 3-2. This corresponds to a 2.4625V to 2.5375V window, enabling reliable detection in 2.5V logic systems without calibration.
Does APX803L20-25W5-7 require external components to operate?
No. The APX803L20-25W5-7 is a fully self-contained voltage detector requiring only VCC, GND, and a pull-up resistor on the open-drain RESET pin. Its internal bandgap reference, comparator, and timing circuitry eliminate all external passive components-no capacitors, resistors, or diodes are needed for basic reset functionality.
How does the 220ms reset timeout behave across temperature?
The 220ms timeout (typical) varies with temperature: datasheet graphs show it remains within 143–297ms from –40°C to +125°C. At +85°C, it measures ~235ms; at –40°C, ~185ms. This monotonic drift is compensated by the device's ±50 ppm/°C threshold stability, preserving overall system reliability.
Can APX803L20-25W5-7 drive a standard CMOS reset input directly?
Yes-when used with an appropriate external pull-up resistor (e.g., 10kΩ to 3.3V or 5V), the open-drain RESET output meets standard CMOS input thresholds. The device sinks up to 20mA (absolute max), and VOL is ≤0.4V at 3.5mA sink current, ensuring solid logic-low assertion compatible with all common µP reset pins.
APX803L20-25W5-7 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:
- 2.5V
- 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
APX803L20-25W5-7 FAQ
1.How can I place an order for APX803L20-25W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-25W5-7 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 APX803L20-25W5-7 reliable?
The price and inventory of APX803L20-25W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-25W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-25W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-25W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-25W5-7?
APX803L20-25W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-25W5-7 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 APX803L20-25W5-7?
For technical support, including APX803L20-25W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-25W5-7 requirements.
6.How does Aetrix verify that APX803L20-25W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-25W5-7 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 APX803L20-25W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-25W5-7?
All APX803L20-25W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-25W5-7, 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 APX803L20-25W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-25W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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