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Diodes Incorporated APX803L-16SA-7
- Part No.:
- APX803L-16SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L-16SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
APX803L-16SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.6V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 220ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C in battery-powered instrumentation and portable embedded systems.
For engineers reviewing the APX803L-16SA-7 datasheet, APX803L-16SA-7 pinout, APX803L-16SA-7 application, or APX803L-16SA-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for power-supply monitoring in space-constrained, low-quiescent-current designs.
Technical Context
The APX803L-16SA-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 1.6V threshold, with built-in hysteresis (0.01×VTH) preventing oscillation during slow-rising/falling supply transitions. Its internal delay timer ensures RESET remains asserted for exactly 220ms after VCC recovers above threshold.
It uses an open-drain output stage capable of sinking ≥3.5mA at 0.4V max VOL, requiring only an external pull-up for system-level reset signaling. No external components are needed-operation is fully self-contained within the SOT23-3 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.6V ±1.5% - precisely holds microprocessor reset until main supply stabilizes above nominal 1.6V rail |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell–powered IoT sensors without measurable battery drain |
| Reset Timeout | 220ms - guarantees sufficient hold time for full µP initialization and clock stabilization before release |
| Output Type | Open-drain, active-low - supports wired-OR reset buses and flexible voltage-level translation via external pull-up |
| Response Time | ≤20µs - detects VCC droop fast enough to prevent µP corruption during transient brownouts |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and portable consumer equipment |
| Package | SOT23-3 - 2.9mm × 1.3mm footprint ideal for high-density PCB layouts in handheld devices |
Pinout & Package
SOT23-3 package: ultra-compact surface-mount plastic case with gull-wing leads, JEDEC TO-236AB compliant, 1.3mm height, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path; must be connected directly to low-impedance system ground plane |
| 2 | RESET | Open-drain active-low output; requires external pull-up resistor (typically 10kΩ) to host VCC or logic rail |
| 3 | VCC | Power input pin; supplies internal circuitry and sets monitored voltage rail; accepts 0.9V–5.5V range |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.6V threshold | Eliminates external resistor divider, reducing BOM count and layout area while guaranteeing factory-trimmed accuracy |
| 220ms reset timeout | Matches typical µP power-on reset timing requirements without needing external RC networks or timers |
| 1µA supply current | Enables always-on supervision in energy-harvesting and battery-backed applications where µA-level leakage matters |
| ±1.5% threshold accuracy | Ensures deterministic reset behavior across temperature and process variation-no calibration required in production |
| Open-drain output | Allows shared reset bus across multiple ICs and supports mixed-voltage system architectures |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Voltage detector supervising 1.6V LDO output feeding the sensor ASIC and BLE SoC. Use Value: 1µA quiescent current extends battery life beyond 2 years; 220ms reset ensures reliable wake-up after cold start. |
Use Scenario: DIN-rail mounted I/O module with isolated 3.3V digital logic rail derived from 24V DC input. IC Role / Device Role / Timing Role: Monitoring 1.6V auxiliary rail powering FPGA configuration memory and watchdog logic. Use Value: ±1.5% threshold accuracy prevents false resets during 24V line ripple; -40°C to +85°C rating supports uncontrolled cabinet environments. |
| Smart Home Hub Controllers | Automotive Body Control Modules |
Use Scenario: Wi-Fi–enabled home automation hub using dual-supply architecture (3.3V core, 1.6V PMIC rail). IC Role / Device Role / Timing Role: Supervising 1.6V PMIC output that powers low-power sleep-state logic and RTC. Use Value: Open-drain RESET allows direct connection to SoC's dedicated reset pin without level-shifting; no external components reduce cost and failure points. |
Use Scenario: Door module with LIN transceiver and microcontroller, powered from vehicle battery via local 1.6V regulator. IC Role / Device Role / Timing Role: Detecting brownout on 1.6V domain supplying LIN PHY and safety-critical firmware boot ROM. Use Value: 20µs response time catches fast transients from load-dump events; hysteresis prevents chatter during ignition cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G16DBVR | 1.6V threshold, 350ms default delay, 1.1µA IQ, SOT23-6 package | Requires external capacitor for delay adjustment; larger footprint and higher pin count | Select when programmable delay or tighter 0.5% threshold accuracy is required, and board space permits SOT23-6 |
| MAX6326-L16T | 1.6V threshold, 200ms delay, 2.5µA IQ, SOT23-3 package | Higher supply current; no hysteresis spec provided; limited temp range (–40°C to +85°C same) | Choose only if legacy MAXIM design reuse is mandatory; otherwise APX803L-16SA-7 offers lower IQ and guaranteed hysteresis |
Compared with TPS3808G16DBVR and MAX6326-L16T, the APX803L-16SA-7 delivers superior power efficiency (1µA vs. ≥1.1µA), guaranteed hysteresis, and identical SOT23-3 footprint-making it optimal for size- and battery-limited designs where fixed 220ms timing suffices.
Availability
APX803L-16SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and automotive body control modules requiring stable component supply with guaranteed long-term continuity.
Supply support for APX803L-16SA-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 with 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-operated and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage for APX803L-16SA-7?
The APX803L-16SA-7 has a factory-trimmed reset threshold of 1.6V with ±1.5% accuracy over temperature (–40°C to +85°C). This value is fixed internally and cannot be adjusted externally-no resistors or capacitors are required to set or calibrate the trip point.
Does APX803L-16SA-7 require an external pull-up resistor on the RESET pin?
Yes-the RESET pin is open-drain and active-low, so an external pull-up resistor (typically 4.7kΩ–10kΩ) to the host logic rail (e.g., 3.3V or 1.8V) is mandatory to generate a valid high-level signal when not asserting reset. No internal pull-up is integrated.
Can APX803L-16SA-7 operate from a 1.2V supply?
No-the minimum recommended VCC is 0.9V, but functional reset detection requires VCC ≥ 1.02×VTH (i.e., ≥1.632V) to guarantee proper internal biasing and comparator operation. Below 1.632V, the device may not assert or release RESET reliably.
Is APX803L-16SA-7 qualified for automotive applications?
The APX803L-16SA-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., APX803L-16SA-7Q) with PPAP support and IATF 16949 manufacturing-but this specific part number is rated for industrial temperature range only and intended for non-safety-critical consumer/industrial use.
APX803L-16SA-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:
- 1.6V
- 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-16SA-7 FAQ
1.How can I place an order for APX803L-16SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-16SA-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-16SA-7 reliable?
The price and inventory of APX803L-16SA-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-16SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L-16SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-16SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-16SA-7?
APX803L-16SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-16SA-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-16SA-7?
For technical support, including APX803L-16SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-16SA-7 requirements.
6.How does Aetrix verify that APX803L-16SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-16SA-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-16SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L-16SA-7?
All APX803L-16SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-16SA-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-16SA-7 part is unused and in its original packaging.
Return procedure for APX803L-16SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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