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Diodes Incorporated APX803L-26SA-7
- Part No.:
- APX803L-26SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L-26SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,788
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Product details
Overview
APX803L-26SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply levels in embedded and battery-powered systems. It features a fixed 2.6V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 220ms built-in recovery delay - enabling reliable power-up sequencing in portable electronics.
For engineers reviewing the APX803L-26SA-7 datasheet, APX803L-26SA-7 pinout, APX803L-26SA-7 application, or APX803L-26SA-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for system-level power monitoring design.
Technical Context
The APX803L-26SA-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator triggers an open-drain RESET signal when VCC drops below 2.6V and holds it low until VCC exceeds 2.6V + hysteresis, with guaranteed 20µs response time from undervoltage event to RESET assertion.
It operates across –40°C to +85°C ambient, supports 0.9V to 5.5V supply range, and requires no external components - delivering deterministic reset timing without RC network calibration or layout sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.6V ±1.5% - ensures precise brown-out detection for 2.8V–3.3V logic rails |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables multi-year operation in coin-cell–powered IoT sensors |
| Reset Delay | 220ms (typ.) - provides sufficient hold-off for slow-ramping power supplies and flash memory initialization |
| Output Type | Open-drain, active-low - allows wired-OR reset bus sharing and flexible pull-up voltage selection (up to 5.5V) |
| Response Time | ≤20µs - guarantees sub-cycle detection of fast transients on VCC |
| Operating Temp | –40°C to +85°C - qualified for industrial and extended-temperature consumer applications |
| Hysteresis | 0.01×VTH (26mV) - prevents chatter during noisy or slowly recovering supply conditions |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.45mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and reset comparator; must be low-impedance connection to system ground plane |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up resistor (typically 10kΩ to VCC or higher rail) |
| 3 | VCC | Power supply input; monitors this node directly; valid from 0.9V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Fixed threshold selection | 2.6V factory-trimmed - eliminates external resistor network and associated tolerance stack-up |
| Ultra-low quiescent current | 1µA typical - reduces standby power by >95% vs. legacy reset ICs, critical for energy harvesting designs |
| Built-in delay options | 220ms timeout - avoids false resets during brief dips; no capacitor required for timing stability |
| High accuracy over temperature | ±1.5% threshold tolerance at +25°C, 50ppm/°C tempco - maintains specification across full operating range |
| Robust ESD protection | ±4000V HBM - withstands handling and board assembly without additional protection circuitry |
Applications
| Smartphone Power Sequencing | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors main PMIC output during cold start and battery-swapping events. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to baseband processor until 2.6V rail stabilizes for ≥220ms. Use Value: Prevents boot failure from premature release of reset due to undershoot on Li-ion charger output. |
Use Scenario: Ensures FPGA configuration completes before enabling field I/O drivers after AC/DC power-up. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse synchronized to 3.3V logic rail recovery. Use Value: Eliminates need for discrete RC reset generator, reducing BOM count and improving thermal reliability. |
| Wireless Sensor Node | Medical Wearable Monitor |
Use Scenario: Supervises coin-cell–powered BLE SoC supply during deep-sleep wake-up transitions. IC Role / Device Role / Timing Role: Detects 2.6V brown-out and asserts RESET to halt firmware execution until stable supply returns. Use Value: Enables sub-µA sleep current while maintaining deterministic reset behavior across battery discharge curve. |
Use Scenario: Validates regulated 2.8V supply to analog front-end ADC prior to ECG sampling. IC Role / Device Role / Timing Role: Provides accurate, hysteresis-stabilized reset to microcontroller upon power-on or low-battery condition. Use Value: Guarantees data integrity by preventing ADC conversion during marginal supply conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G26DBVR | 2.6V threshold, 350ms default delay, 1.6µA supply current, SOT23-6 package | Requires external capacitor for delay adjustment; larger footprint and higher quiescent current | Choose if programmable delay or tighter tempco (±0.5%) is required despite higher cost and size |
| MAX809SEUR+T | 2.63V threshold, 140ms delay, 10µA supply current, SOT23-3 package | Higher supply current limits battery life; lower accuracy (±2.5%) and no hysteresis spec | Accept only if legacy compatibility or second-source validation is mandatory and 10µA standby is acceptable |
Compared with TPS3808G26DBVR and MAX809SEUR+T, the APX803L-26SA-7 delivers superior energy efficiency (1µA vs. ≥10µA), tighter threshold accuracy (±1.5% vs. ±2.5%), and integrated 220ms delay - making it optimal for space-constrained, long-life battery applications where minimal BOM and predictable timing are critical.
Availability
APX803L-26SA-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, industrial PLC I/O modules, wireless sensor nodes, and medical wearable monitors requiring stable component supply and long-term lifecycle support.
Supply support for APX803L-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 aligned to AEC-Q200 for automotive-grade reliability.
The APX803L series belongs to Diodes' precision power management portfolio, engineered specifically for ultra-low-power supervisory functions in portable, battery-operated, and energy-sensitive embedded systems.
FAQ
What is the exact detection threshold voltage for APX803L-26SA-7?
The APX803L-26SA-7 has a factory-trimmed detection threshold of 2.6V with ±1.5% accuracy at +25°C, and a temperature coefficient of 50ppm/°C. This means the actual trip point remains within 2.561V to 2.639V across the full –40°C to +85°C operating range under specified conditions.
Can APX803L-26SA-7 drive a microcontroller reset pin directly?
Yes - its open-drain RESET output can interface directly with standard CMOS reset inputs. A pull-up resistor (e.g., 10kΩ to VCC or another logic rail up to 5.5V) is required. The output sinks up to 20mA and maintains <0.4V low-level voltage at 3.5mA sink current, ensuring robust logic-level compatibility.
Is there a version with adjustable delay or threshold?
No - the APX803L-26SA-7 has fixed 2.6V threshold and fixed 220ms delay. Diodes does not offer user-adjustable variants in this family. For programmable delay, consider the APX803L05-26SA-7 (55ms) or APX803L40-26SA-7 (450ms); all thresholds are factory-set and non-adjustable.
Does APX803L-26SA-7 require external capacitors or resistors?
No - it operates with zero external components. The internal voltage reference, comparator, and delay timer are fully integrated. Only a 100nF bypass capacitor on VCC (as shown in the Typical Applications Circuit) is recommended for noise immunity, but not strictly required for basic functionality.
APX803L-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:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX803L-26SA-7 FAQ
1.How can I place an order for APX803L-26SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-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 APX803L-26SA-7 reliable?
The price and inventory of APX803L-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 APX803L-26SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L-26SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-26SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-26SA-7?
APX803L-26SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-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 APX803L-26SA-7?
For technical support, including APX803L-26SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-26SA-7 requirements.
6.How does Aetrix verify that APX803L-26SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-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 APX803L-26SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L-26SA-7?
All APX803L-26SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-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 APX803L-26SA-7 part is unused and in its original packaging.
Return procedure for APX803L-26SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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