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Diodes Incorporated APX803L20-13SA-7
- Part No.:
- APX803L20-13SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L20-13SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
APX803L20-13SA-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 SOT23-3 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 APX803L20-13SA-7 datasheet, APX803L20-13SA-7 pinout, APX803L20-13SA-7 application, or APX803L20-13SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current operation, and compatibility with 1.2–5.0V system rails requiring reliable brown-out protection.
Technical Context
The APX803L20-13SA-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.0V threshold, with hysteresis of 0.01×VTH to prevent chatter during slow-rising/falling supply transitions. Its internal timing circuit generates a guaranteed 220ms (min–max: 143–297ms) active-reset pulse after VCC drops below threshold.
Operating from 0.9V to 5.5V supply, it features an open-drain RESET output capable of sinking 20mA, with VOL ≤0.4V at 3.5mA sink load. The device achieves 20µs response time from VCC drop to RESET assertion and maintains ±50ppm/°C threshold drift across –40°C to +85°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.0V ±1.5% - ensures accurate brown-out detection at nominal 2.0V rail without external calibration |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Reset Timeout | 220ms (143–297ms) - provides sufficient hold-off for µP initialization and power-rail stabilization |
| Response Time | 20µs - guarantees rapid fault capture before system state corruption occurs |
| Output Type | Open-drain, active-low - supports wired-OR reset bus architecture and flexible pull-up voltage selection |
| Operating Temp | –40°C to +85°C - validated for industrial and extended-temperature portable electronics |
| Package | SOT23-3 - surface-mount footprint compatible with high-density PCB layouts and automated assembly |
Pinout & Package
SOT23-3 package (3-pin, 1.3mm × 2.9mm, 0.95mm height), RoHS-compliant, lead-free, halogen-free "Green" construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up to logic rail (e.g., VCC or IOVDD) |
| 3 | VCC | Power supply input; monitors this node for threshold violation; operates down to 0.9V |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.0V threshold | Eliminates external resistor divider, reducing BOM count and layout area while ensuring production consistency |
| 220ms factory-programmed delay | Guarantees reset pulse width meets ARM Cortex-M and RISC-V MCU boot requirements without external RC timing |
| ±1.5% threshold accuracy | Reduces design margin overhead versus ±3–5% alternatives, enabling tighter supply rail design |
| 1µA supply current | Supports >10-year battery life in wake-on-event sensor nodes with 200mAh CR2032 cells |
| –40°C to +85°C operation | Validated for deployment in outdoor environmental monitors and automotive cabin electronics |
Applications
| Battery-Powered Wearables | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous heart-rate monitoring using BLE SoC powered by rechargeable Li-ion cell with variable discharge profile. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to halt firmware execution when VBAT falls below 2.0V, preventing data corruption during low-voltage brownout. Use Value: Prevents invalid sensor readings and BLE transmission errors by enforcing clean power-cycle recovery before reinitialization. |
Use Scenario: DIN-rail mounted remote I/O unit operating from 24VDC supply with local 3.3V LDO powering FPGA and ADC. IC Role / Device Role / Timing Role: Monitors 3.3V rail for undervoltage events; holds FPGA in reset for 220ms to ensure stable clock and configuration loading. Use Value: Eliminates FPGA configuration failure due to premature release from reset during LDO startup transients. |
| Smart Home Sensor Hubs | Medical Point-of-Care Devices |
Use Scenario: Multi-sensor hub (temp/humidity/CO₂) powered by USB-C PD with dynamically negotiated 5V/9V/15V input. IC Role / Device Role / Timing Role: Supervises 3.3V system rail derived from buck converter; triggers hardware reset if input ripple causes rail collapse. Use Value: Maintains deterministic boot sequence across variable input conditions, avoiding soft-lockup during field deployment. |
Use Scenario: Handheld blood glucose meter using single AAA alkaline cell with declining voltage over 6-month service life. IC Role / Device Role / Timing Role: Detects end-of-life battery condition at 2.0V threshold and forces controlled shutdown before display artifacts occur. Use Value: Ensures clinical result integrity by disabling measurement mode prior to voltage-induced ADC nonlinearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803S20DBZR | 2.0V threshold, 200ms delay, 0.5µA IQ, SOT23-3 - lower quiescent current but ±2.5% accuracy | Preferred for ultra-low-power sub-µA sleep modes; less suitable where tight threshold tolerance is critical | Select when battery lifetime dominates over reset precision; verify hysteresis margin in noisy supply environments |
| MAX809SEUR+T | 2.0V threshold, 140ms delay, 10µA IQ, SOT23-3 - higher supply current, wider delay tolerance (±30%) | Acceptable for cost-sensitive industrial controls where 140ms minimum delay suffices and 10µA IQ is acceptable | Choose only if legacy MAX809 footprint compatibility is required; avoid in energy-harvesting or long-life designs |
Compared with TLV803S20DBZR and MAX809SEUR+T, the APX803L20-13SA-7 offers superior threshold accuracy (±1.5% vs. ±2.5%/±3.5%) and tighter delay control (±67ms vs. ±40ms/±42ms), making it optimal for systems where deterministic reset timing and minimal voltage-margin design are essential.
Availability
APX803L20-13SA-7 is available at Aetrix Electronics and suitable for battery-powered wearables, industrial PLC I/O modules, smart home sensor hubs, and medical point-of-care devices requiring stable component supply and long-term lifecycle support.
Supply support for APX803L20-13SA-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 power monitoring in space-constrained and battery-dependent systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L20-13SA-7?
The APX803L20-13SA-7 has a nominal reset threshold of 2.0V with a guaranteed accuracy of ±1.5% over temperature (–40°C to +85°C), meaning the actual trip point falls between 1.97V and 2.03V at +25°C and remains within ±1.5% across its full operating range.
Does APX803L20-13SA-7 require external components for basic operation?
No external components are required. The device integrates the threshold reference, comparator, timing circuit, and output driver. Only a decoupling capacitor (e.g., 100nF) near VCC is recommended for noise immunity; no pull-up or timing resistors are needed.
Can APX803L20-13SA-7 monitor voltages below 2.0V, such as 1.8V or 1.2V rails?
No - the APX803L20-13SA-7 is factory-trimmed to 2.0V and cannot be adjusted. For 1.8V supervision, use APX803L18-XXSA-7; for 1.2V, use APX803L12-XXSA-7. Each variant has a fixed internal threshold.
Is the SOT23-3 package of APX803L20-13SA-7 compatible with standard reflow profiles?
Yes - the SOT23-3 package is rated for JEDEC J-STD-020D-compliant reflow soldering, including peak temperatures up to 260°C for 30 seconds. Its lead-free, halogen-free construction meets IPC-A-610 Class 2/3 process requirements.
APX803L20-13SA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.3V
- 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-23-3
APX803L20-13SA-7 FAQ
1.How can I place an order for APX803L20-13SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-13SA-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 APX803L20-13SA-7 reliable?
The price and inventory of APX803L20-13SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-13SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-13SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-13SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-13SA-7?
APX803L20-13SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-13SA-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 APX803L20-13SA-7?
For technical support, including APX803L20-13SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-13SA-7 requirements.
6.How does Aetrix verify that APX803L20-13SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-13SA-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 APX803L20-13SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-13SA-7?
All APX803L20-13SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-13SA-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 APX803L20-13SA-7 part is unused and in its original packaging.
Return procedure for APX803L20-13SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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