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Diodes Incorporated APX803L20-12W5-7
- Part No.:
- APX803L20-12W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-12W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,177
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Product details
Overview
APX803L20-12W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.2V 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 APX803L20-12W5-7 datasheet, APX803L20-12W5-7 pinout, APX803L20-12W5-7 application, or APX803L20-12W5-7 equivalent, this device supports critical low-power system initialization, brown-out protection, and reliable reset assertion timing across -40°C to +85°C ambient operation.
Technical Context
The APX803L20-12W5-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 1.2V threshold with 0.01×VTH hysteresis. Its internal delay timer ensures 220ms (min 143ms, max 297ms) reset pulse width after VCC recovery, independent of external components.
Operating from 0.9V to 5.5V supply, it features an open-drain RESET output capable of sinking 3.5mA at 0.4V low-level voltage, enabling direct interface with µP reset inputs while maintaining compatibility with 1.8V–5V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 1.2V ±1.5% - enables accurate detection of 1.2V rail collapse in low-voltage SoC power domains |
| Supply Current | 1.0µA typical - imposes negligible load on coin-cell or energy-harvesting supplies |
| Reset Timeout | 220ms (143–297ms range) - ensures sufficient hold time for full µP initialization before release |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration and flexible pull-up voltage selection |
| Response Time | 20µs max - guarantees rapid fault capture during fast VCC transients |
| Operating Temp | -40°C to +85°C - supports industrial and extended commercial temperature deployment |
| Package | SOT25 (3-pin) - surface-mount footprint compatible with automated assembly and high-density PCB layouts |
Pinout & Package
SOT25 is a 3-pin, lead-free, RoHS-compliant surface-mount package with standard JEDEC outline and thermal resistance of 200°C/W (Junction-to-Ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path; must be connected directly to system ground plane for stable threshold accuracy |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up resistor to define logic-high level and sink capability |
| 3 | VCC | Power supply input; monitors this rail for undervoltage condition; operates down to 0.9V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated reference, comparator, and timer eliminate BOM cost and layout area for discrete supervision circuits |
| High threshold accuracy | ±1.5% over temperature ensures consistent reset behavior without calibration across operating range |
| Ultra-low quiescent current | 1.0µA typ. enables >10-year battery life in always-on wearable health monitors |
| Fast response time | 20µs detection-to-reset assertion meets real-time safety-critical timing requirements |
| Multiple package options | SOT25 footprint offers improved thermal performance vs. SOT23/SC59 while retaining 3-pin simplicity |
Applications
| Smart Wearable Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous ECG monitoring powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Voltage detector asserting reset during battery sag below 1.2V to prevent corrupted sensor data writes. Use Value: Prevents firmware lockup and memory corruption by guaranteeing clean µP restart before supply collapse reaches critical levels. |
Use Scenario: DIN-rail mounted remote I/O unit operating in factory environments with fluctuating 24VDC supply. IC Role / Device Role / Timing Role: Supervises local 3.3V LDO output feeding FPGA configuration circuitry. Use Value: Ensures FPGA reconfiguration only occurs after stable 3.3V rail is confirmed for ≥220ms, eliminating partial bitstream loading. |
| Portable Medical Infusion Pumps | Asset Tracking Beacons |
Use Scenario: Battery-powered infusion pump with motor driver and touch UI requiring deterministic boot sequence. IC Role / Device Role / Timing Role: Monitors main 3.7V Li-ion rail and triggers hardware reset if voltage drops below 1.2V during motor surge events. Use Value: Guarantees safe shutdown and restart before motor control logic enters undefined state during brownout. |
Use Scenario: GPS-enabled logistics tag reporting location every 4 hours using ultra-low-power MCU and LoRaWAN radio. IC Role / Device Role / Timing Role: Detects weak battery condition (<1.2V under load) and forces controlled shutdown prior to RTC failure. Use Value: Preserves last-known position timestamp and prevents data loss during final battery discharge phase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA12DBZR | 1.2V threshold, 200ms delay, 0.5µA supply current, SOT23-3 package | Lacks guaranteed 220ms timeout consistency across temperature; tighter 0.5µA current but lower drive strength (2mA sink) | Prefer when lowest possible current dominates over reset timing stability |
| MAX809SEUR+T | 1.2V threshold, 240ms delay, 10µA supply current, SOT23-3 package | Higher supply current reduces battery lifetime; wider delay tolerance (160–320ms); no hysteresis spec | Acceptable where 10µA current is tolerable and ±80ms delay variation is acceptable |
Compared with TLV803EA12DBZR and MAX809SEUR+T, the APX803L20-12W5-7 delivers superior thermal stability of reset timing (±77ms over -40°C to +85°C), lower supply current than MAX809, and higher output sink capability-making it optimal for compact, long-life, temperature-variable deployments.
Availability
APX803L20-12W5-7 is available at Aetrix Electronics and suitable for smart wearables, industrial I/O modules, and portable medical equipment requiring stable component supply and long-term manufacturability.
Supply support for APX803L20-12W5-7 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 for power management, signal integrity, and connectivity applications.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset generation in space-constrained and battery-sensitive systems.
FAQ
What is the exact reset timeout duration for APX803L20-12W5-7?
The APX803L20-12W5-7 provides a nominal 220ms reset active timeout period after VCC recovers above the 1.2V threshold, with guaranteed minimum and maximum values of 143ms and 297ms respectively across -40°C to +85°C ambient temperature, per DS38171 Rev. 3-2 Section 5.
Can APX803L20-12W5-7 operate with a 1.0V supply?
No. The APX803L20-12W5-7 requires a minimum VCC of 0.9V to function, but its 1.2V threshold detection is only valid when VCC ≥ 1.02 × VTH (i.e., ≥1.224V). Below that, the device may not assert reset reliably; recommended operating VCC range is 0.9V to 5.5V per Recommended Operating Conditions table.
Is an external pull-up resistor required on the RESET pin?
Yes. The RESET pin is open-drain and active-low; a pull-up resistor to a logic-compatible voltage (e.g., 1.8V, 3.3V, or 5V) is mandatory to establish the high-state voltage level and enable proper interfacing with µP reset inputs. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Does APX803L20-12W5-7 support AEC-Q200 qualification?
No. The APX803L20-12W5-7 is not AEC-Q200 qualified. Diodes Incorporated offers automotive-grade variants (e.g., APX803L20-12W5-7Q) with PPAP capability and IATF 16949 manufacturing, but this specific part number is rated for industrial/commercial use only, with operating temperature range limited to -40°C to +85°C.
APX803L20-12W5-7 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:
- 1.2V
- 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
APX803L20-12W5-7 FAQ
1.How can I place an order for APX803L20-12W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-12W5-7 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 APX803L20-12W5-7 reliable?
The price and inventory of APX803L20-12W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-12W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-12W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-12W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-12W5-7?
APX803L20-12W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-12W5-7 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 APX803L20-12W5-7?
For technical support, including APX803L20-12W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-12W5-7 requirements.
6.How does Aetrix verify that APX803L20-12W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-12W5-7 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 APX803L20-12W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-12W5-7?
All APX803L20-12W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-12W5-7, 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 APX803L20-12W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-12W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L20-12W5-7 Tags
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