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Diodes Incorporated APX803L05-24SA-7
- Part No.:
- APX803L05-24SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-24SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,581
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Product details
Overview
APX803L05-24SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 5.0V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 55ms reset timeout. It delivers active-low open-drain reset signaling in battery-powered IoT sensors and portable medical devices requiring low-burden power monitoring.
For engineers reviewing the APX803L05-24SA-7 datasheet, APX803L05-24SA-7 pinout, APX803L05-24SA-7 application, or APX803L05-24SA-7 equivalent, this page details its fixed-threshold supervision function, SOT23-3 package compatibility, reset timing behavior across temperature, and design integration requirements for reliable microcontroller power-up sequencing.
Technical Context
The APX803L05-24SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×VTH) to prevent reset chatter during supply ramp-up or noise events. Its comparator output drives an open-drain RESET pin that remains asserted until VCC exceeds 1.02×VTH.
It integrates factory-trimmed delay circuitry delivering a nominal 55ms reset pulse width at +25°C, with monotonic variation across –40°C to +85°C ambient range and no external components required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 5.0V ±1.5% - fixed internal threshold enabling direct replacement of discrete resistor-divider supervisors in 5V systems |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries without measurable drain impact |
| Reset Timeout | 55ms nominal - ensures sufficient hold time for µP initialization before release, validated over full industrial temperature range |
| Output Type | Open-drain, active-low - supports wired-OR reset bus configurations and flexible pull-up voltage selection up to 5.5V |
| Response Time | 20µs max - guarantees rapid fault capture during brownout events without missing critical power dips |
| Operating Voltage | 0.9V to 5.5V - allows supervision of core logic rails down to sub-1V while maintaining functionality at full system VCC |
| Threshold Hysteresis | 0.01×VTH - prevents oscillation during slow-rising or noisy supply conditions without requiring external feedback |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm × 1.0mm body, gull-wing leads, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Primary return path for internal biasing and output sink current; must connect to system ground plane with low-inductance trace |
| 2 (RESET) | Open-Drain Reset Output | Active-low signal asserted when VCC < 5.0V; requires external pull-up to define logic-high level and drive strength |
| 3 (VCC) | Supply Input | Powers internal circuitry and senses monitored rail; accepts 0.9–5.5V with no reverse polarity protection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typical enables >10-year shelf life in energy-harvested sensor nodes |
| Factory-trimmed threshold | 5.0V ±1.5% eliminates need for external calibration or trimming resistors |
| Integrated delay timer | 55ms fixed timeout removes requirement for RC network and associated board space |
| No external components | Operates stand-alone with only VCC, GND, and pull-up on RESET - reduces BOM count and layout complexity |
| Wide temperature range | Specified from –40°C to +85°C ambient supports deployment in automotive cabin and industrial edge environments |
Applications
| Smart Wearables | Industrial PLC Modules |
|---|---|
|
Use Scenario: Power-on reset sequencing for ARM Cortex-M4-based fitness trackers with BLE radio and analog front-end. IC Role / Device Role / Timing Role: Voltage supervisor ensuring µP remains held in reset until 5V LDO output stabilizes and ADC reference settles. Use Value: Prevents firmware execution from corrupted memory state by enforcing minimum 55ms reset assertion after power ramp. |
Use Scenario: Supervision of 5V I/O power rail in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Fault-detection interface between isolated DC-DC converter and FPGA configuration circuitry. Use Value: Guarantees deterministic FPGA reconfiguration after brownout via clean, hysteresis-stabilized reset pulse. |
| Medical Infusion Pumps | Automotive Telematics Gateways |
|
Use Scenario: Monitoring main 5V supply in battery-backed infusion pump controller with motor driver and display subsystem. IC Role / Device Role / Timing Role: Safety-critical reset generator preventing unintended actuation during undervoltage transients. Use Value: Delivers <20µs response to 100mV VCC dip, meeting IEC 62304 Class C software safety requirements. |
Use Scenario: Supervising 5V CAN transceiver and microcontroller power domain in vehicle-to-cloud communication modules. IC Role / Device Role / Timing Role: System-level reset coordinator synchronizing power-up of MCU, modem, and secure element. Use Value: Ensures all peripherals are fully powered and stable before firmware begins CAN bus initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E50DBZR | 5.0V threshold, 350ms default delay, 0.5µA supply current, same SOT23-3 footprint | Longer reset timeout limits use in fast-boot systems; lower current benefits ultra-low-power designs | Select when extended reset hold time improves system reliability and µA-level savings outweigh timing constraints |
| MAX809SEUR+T | 5.0V threshold, 240ms delay, 10µA supply current, SOT23-3 package | Higher ICC increases battery load; longer delay may conflict with µP boot timing specs | Choose only if legacy MAX809 qualification or long-established validation data is required for certification |
Compared with TLV803E50DBZR and MAX809SEUR+T, the APX803L05-24SA-7 offers optimal balance of low ICC (1µA), precise 55ms timing, and tight ±1.5% threshold tolerance-making it ideal for new designs prioritizing battery life and deterministic reset behavior without over-engineering delay duration.
Availability
APX803L05-24SA-7 is available at Aetrix Electronics and suitable for smart wearables, industrial PLC modules, and medical infusion pumps requiring stable component supply with guaranteed long-term continuity.
Supply support for APX803L05-24SA-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 manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for ultra-low-power, high-accuracy reset generation in battery-constrained and safety-critical embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L05-24SA-7?
The APX803L05-24SA-7 has a factory-set detection threshold of 5.0V with a guaranteed accuracy of ±1.5% over the full operating temperature range (–40°C to +85°C), meaning the actual trip point falls between 4.925V and 5.075V at +25°C and maintains specified hysteresis (0.01×VTH) across temperature.
Can APX803L05-24SA-7 be used with a 3.3V pull-up on the RESET pin?
Yes - the open-drain RESET output supports any pull-up voltage from 0.9V to 5.5V, including 3.3V logic systems. The output sink capability is rated for 20mA, and VOL remains ≤0.4V at 3.5mA sink current, ensuring solid logic-low compatibility with standard CMOS inputs.
Does APX803L05-24SA-7 require decoupling capacitors?
No external capacitors are required for basic operation. However, a 100nF ceramic capacitor placed close to the VCC pin is recommended per Diodes' typical application circuit to suppress high-frequency noise and ensure stable internal reference performance during transient load events.
Is APX803L05-24SA-7 qualified for automotive applications?
The APX803L05-24SA-7 itself is not AEC-Q100 qualified; however, Diodes offers automotive-grade variants (e.g., APX803L05-24SA-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. Contact Diodes or Aetrix for qualified part numbers and qualification reports.
APX803L05-24SA-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:
- 2.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX803L05-24SA-7 FAQ
1.How can I place an order for APX803L05-24SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-24SA-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 APX803L05-24SA-7 reliable?
The price and inventory of APX803L05-24SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-24SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-24SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-24SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-24SA-7?
APX803L05-24SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-24SA-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 APX803L05-24SA-7?
For technical support, including APX803L05-24SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-24SA-7 requirements.
6.How does Aetrix verify that APX803L05-24SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-24SA-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 APX803L05-24SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-24SA-7?
All APX803L05-24SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-24SA-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 APX803L05-24SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-24SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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