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Diodes Incorporated APX803L05-26SA-7
- Part No.:
- APX803L05-26SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-26SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:725
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Product details
Overview
APX803L05-26SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.6V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 55ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C in battery-powered IoT sensors and portable medical devices.
For engineers reviewing the APX803L05-26SA-7 datasheet, APX803L05-26SA-7 pinout, APX803L05-26SA-7 application, or APX803L05-26SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current impact on battery life, and SOT23 package compatibility with high-density PCB layouts.
Technical Context
The APX803L05-26SA-7 integrates a precision bandgap reference and comparator with hysteresis (0.01×VTH) to reject noise-induced false resets. Its internal fixed 2.6V detection threshold is laser-trimmed during wafer test, eliminating external resistor networks.
Reset assertion occurs within 20µs when VCC drops below 2.6V, and release requires VCC to exceed 2.6V + hysteresis (≈2.626V); the 55ms timeout ensures reliable de-bounce of power-rail transients before system recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.6V ±1.5% - Enables accurate brown-out detection for 3.3V logic rails without calibration. |
| Supply Current | 1.0µA (typ.) - Minimizes standby power draw in coin-cell–powered wearables. |
| Reset Timeout | 55ms - Matches typical microcontroller boot initialization timing requirements. |
| Output Type | Open-drain, active-low - Allows wired-OR reset bus configuration with multiple supervisors. |
| Response Time | 20µs - Ensures rapid fault capture during fast VCC collapse events. |
| Operating Temp | –40°C to +85°C - Supports industrial-grade operation in uncontrolled ambient environments. |
| Hysteresis | 0.01×VTH (26mV) - Prevents oscillatory reset toggling near threshold during slow power ramp-up. |
Pinout & Package
SOT23-3 package (3-pin, 1.3mm × 2.9mm × 1.0mm body, 0.95mm pitch), RoHS-compliant, lead-free, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path for internal comparator and bandgap circuitry. |
| 2 | RESET | Open-drain output; pulled low during reset condition; requires external pull-up to VCC or another rail. |
| 3 | VCC | Power input (0.9–5.5V); supplies internal circuitry and defines monitored supply rail. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.6V threshold | Laser-trimmed at wafer level-no external components needed for stable detection point. |
| 55ms reset timeout | Internally generated via RC network-eliminates timing capacitor placement and tolerance errors. |
| ±1.5% threshold accuracy | Guaranteed over full temperature range-reduces margining overhead in power-rail design. |
| 20µs response time | Enables detection of sub-millisecond supply dips-critical for real-time safety-critical systems. |
| 1µA supply current | Extends shelf life of primary batteries by >10 years in always-on monitoring applications. |
Applications
| Smart Wearable Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Continuous ECG monitoring patch powered by CR2032 battery with ultra-low duty-cycle MCU wake-ups. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during battery voltage sag below 2.6V to prevent corrupted ADC sampling or flash writes. Use Value: 1µA quiescent current extends usable battery life beyond 24 months; 55ms timeout avoids spurious resets from transient load spikes. |
Use Scenario: DIN-rail mounted remote I/O node operating from 24VDC supply with local 3.3V LDO regulation. IC Role / Device Role / Timing Role: Monitors 3.3V rail integrity and forces controlled MCU reset if LDO output collapses due to overload or thermal shutdown. Use Value: ±1.5% threshold accuracy ensures deterministic reset behavior across –40°C to +70°C cabinet temperatures. |
| Medical Infusion Pumps | Automotive Telematics Gateways |
|
Use Scenario: Battery-backed infusion controller requiring fail-safe shutdown upon main supply failure. IC Role / Device Role / Timing Role: Detects 3.3V system rail drop and asserts active-low RESET to halt motor drivers and log fault state to nonvolatile memory. Use Value: 20µs response captures fast transients from relay switching noise; open-drain output interfaces directly with MCU reset pin. |
Use Scenario: CAN-based telematics unit powered from vehicle battery (9–16V) with internal 3.3V domain. IC Role / Device Role / Timing Role: Supervises 3.3V domain to ensure clean boot after cold crank (battery dip to 6V) or load dump recovery. Use Value: Hysteresis (26mV) prevents reset chatter during slow VCC recovery; SOT23 footprint supports compact layout near power management IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G01DBVR | Adjustable threshold (via external resistor divider); 1.8µA IQ; 200ms default delay (programmable) | Requires BOM addition of two resistors; better for multi-rail systems needing shared supervisor IC | Select when flexible threshold tuning or longer delays are required; avoid if space-constrained or cost-sensitive. |
| MAX809SEUR+T | Fixed 2.93V threshold; 12µA IQ; 240ms reset timeout; SOT23-3 | Higher threshold unsuitable for 2.6V–2.8V rails; higher current reduces battery life in long-term deployments | Only suitable if system rail is ≥2.93V and 240ms delay aligns with firmware boot sequence. |
Compared with TPS3808G01DBVR and MAX809SEUR+T, the APX803L05-26SA-7 delivers optimal trade-off for 2.6V rails: lowest quiescent current, exact threshold match, and industry-standard 55ms timing-without external components or layout overhead.
Availability
APX803L05-26SA-7 is available at Aetrix Electronics and suitable for smart wearable sensors, industrial PLC I/O modules, medical infusion pumps, and automotive telematics gateways requiring stable component supply across extended production lifecycles.
Supply support for APX803L05-26SA-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 manufacturing certified to IATF 16949 and quality systems compliant with AEC-Q standards.
The APX803L series belongs to Diodes' precision power management portfolio, engineered specifically for ultra-low-power supervisory functions in battery-critical and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage for APX803L05-26SA-7?
The APX803L05-26SA-7 has a factory-trimmed fixed threshold of 2.60V with guaranteed accuracy of ±1.5% over –40°C to +85°C, meaning the actual trip point falls between 2.561V and 2.639V under all operating conditions.
Does APX803L05-26SA-7 require an external pull-up resistor on the RESET pin?
Yes-the RESET pin is open-drain and must be pulled up to a valid logic rail (e.g., VCC or another compatible voltage) using an external resistor; typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Can APX803L05-26SA-7 operate from a 1.8V supply?
No-the minimum recommended VCC is 0.9V, but the internal bandgap reference and comparator require sufficient headroom to maintain 2.6V threshold accuracy; operation below 2.7V may cause undefined reset behavior and is outside the specified operating range.
Is APX803L05-26SA-7 qualified for automotive applications?
This specific variant is not AEC-Q100 qualified; however, Diodes offers automotive-grade versions (e.g., APX803L05-26SA-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening-contact Diodes or Aetrix for qualified part numbers.
APX803L05-26SA-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:
- 2.6V
- 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
APX803L05-26SA-7 FAQ
1.How can I place an order for APX803L05-26SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-26SA-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 APX803L05-26SA-7 reliable?
The price and inventory of APX803L05-26SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-26SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-26SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-26SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-26SA-7?
APX803L05-26SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-26SA-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 APX803L05-26SA-7?
For technical support, including APX803L05-26SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-26SA-7 requirements.
6.How does Aetrix verify that APX803L05-26SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-26SA-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 APX803L05-26SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-26SA-7?
All APX803L05-26SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-26SA-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 APX803L05-26SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-26SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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