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Diodes Incorporated APX803L-16W5-7
- Part No.:
- APX803L-16W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-16W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,950
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Product details
Overview
APX803L-16W5-7 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 in a 3-pin SOT25 package-used in battery-powered IoT sensors and portable medical monitors.
For engineers reviewing the APX803L-16W5-7 datasheet, APX803L-16W5-7 pinout, APX803L-16W5-7 application, or APX803L-16W5-7 equivalent, this page delivers verified electrical specs, SOT25 terminal mapping, real-world supervisory use cases, and validated alternative parts for power-rail monitoring in space-constrained embedded systems.
Technical Context
The APX803L-16W5-7 implements a fixed-threshold, open-drain reset supervisor with internal 1.6V detection set at factory (0.1V step), hysteresis of 0.01×VTH, and temperature coefficient of 50 ppm/°C. It asserts active-low RESET within 20µs when VCC drops below 1.6V and holds it until VCC exceeds 1.6V + hysteresis.
Its 220ms recovery delay (APX803L20 variant) is internally trimmed and stable across -40°C to +85°C ambient, enabling reliable power-up sequencing in microcontroller-based edge nodes without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.6V ±1.5% - ensures accurate brown-out detection for 1.8V I/O domain logic |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries |
| Reset Timeout | 220ms - provides sufficient hold time for slow-ramping power supplies |
| Output Type | Open-drain, active-low - allows wired-OR reset bus sharing across multiple ICs |
| Response Time | 20µs - guarantees fast fault capture before system state corruption |
| Operating Voltage | 0.9V to 5.5V - supports supervision of 1.2V–3.3V rails including LDO outputs |
| Threshold Hysteresis | 0.01×VTH - prevents chatter during marginal supply conditions |
Pinout & Package
SOT25 (3-pin, 1.6mm × 2.8mm × 1.1mm) package with exposed pad for thermal enhancement; RoHS-compliant, halogen-free, lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage |
| 2 | RESET | Open-drain active-low reset signal; requires external pull-up to monitored rail or system VCC |
| 3 | VCC | Power input; also the monitored supply rail for threshold comparison |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - minimizes battery drain in always-on monitoring applications |
| Factory-trimmed threshold | 1.6V ±1.5% - eliminates need for external resistor divider calibration |
| Integrated delay options | 220ms timeout - avoids false resets during transient dips in noisy DC-DC outputs |
| No external components | Self-contained supervision - reduces BOM count and PCB area vs. discrete solutions |
| Wide temperature range | -40°C to +85°C operating - suitable for industrial and automotive cabin environments |
Applications
| Smart Wearables | Industrial PLC Modules |
|---|---|
Use Scenario: Continuous heart-rate monitoring in wrist-worn ECG patches powered by CR2032 cells. IC Role / Device Role / Timing Role: Supervises 1.8V LDO output feeding the MCU and analog front-end; asserts RESET if battery sags below 1.6V. Use Value: Prevents firmware crash during low-battery operation while extending usable runtime via 1µA standby draw. | Use Scenario: Power sequencing in DIN-rail mounted programmable logic controllers with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Monitors 3.3V core rail and triggers system-wide reset after 220ms hold time to ensure stable FPGA configuration. Use Value: Eliminates need for RC timing network, improving long-term reliability and reducing thermal drift sensitivity. |
| Medical Infusion Pumps | Wireless Sensor Nodes |
Use Scenario: Battery-backed safety-critical infusion pump with motor control and display subsystems. IC Role / Device Role / Timing Role: Detects undervoltage on 2.5V analog sensor rail; holds RESET until full recovery to prevent erroneous dose delivery. Use Value: Meets IEC 62304 Class C software safety requirements via deterministic reset behavior and ±1.5% threshold accuracy. | Use Scenario: LoRaWAN soil moisture node deployed in remote agricultural fields. IC Role / Device Role / Timing Role: Supervises 3.0V boost converter output powering the transceiver; initiates graceful shutdown on voltage collapse. Use Value: Enables reliable wake-up and transmission even after extended storage at low temperatures (-40°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E16DBVR | 1.6V threshold, 350ms delay, 0.5µA supply current, SOT23-3 | Lacks hysteresis specification; tighter 0.5% threshold accuracy but no tempco data published | Select when ultra-low current dominates over hysteresis stability in high-noise environments |
| MAX809SEUR+T | 1.6V threshold, 140ms delay, 10µA supply current, SOT23-3 | Higher ICC increases battery load; same ±1.5% accuracy but wider delay tolerance (±15%) | Choose only if legacy MAX809 footprint compatibility is mandatory and 10µA drain is acceptable |
Compared with TLV803E16DBVR and MAX809SEUR+T, the APX803L-16W5-7 delivers optimal balance of ultra-low ICC (1µA), guaranteed hysteresis (0.01×VTH), and stable 220ms timeout-making it superior for long-life battery systems requiring predictable reset timing across temperature.
Availability
APX803L-16W5-7 is available at Aetrix Electronics and suitable for smart wearables, industrial PLC modules, medical infusion pumps, and wireless sensor nodes requiring stable component supply with consistent parametric performance across production lots.
Supply support for APX803L-16W5-7 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 devices, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.
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 energy-harvesting systems where supply current and threshold stability are critical.
FAQ
What is the exact reset threshold voltage and its tolerance for APX803L-16W5-7?
The APX803L-16W5-7 has a factory-set reset threshold of 1.6V with a guaranteed accuracy of ±1.5% over -40°C to +85°C ambient temperature, corresponding to a range of 1.576V to 1.624V at +25°C per datasheet DS38171 Rev. 3-2 Section 5.3.
Does APX803L-16W5-7 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 10kΩ to system VCC or monitored rail) is required to generate a valid logic-high level during normal operation; no internal pull-up is integrated.
Can APX803L-16W5-7 monitor a voltage rail different from its supply voltage?
No-it monitors only the VCC pin itself; the device uses VCC as both power source and input for threshold comparison, so it cannot supervise an independent rail like AVDD or a separate 5V supply unless that rail powers the APX803L-16W5-7 directly.
What is the maximum sink current capability of the RESET output?
The RESET output can sink up to 20mA (absolute maximum rating), with VOL ≤ 0.4V at ISINK = 3.5mA per Electrical Characteristics Table (Section 5.4), ensuring robust drive into standard CMOS inputs and reset controller enable pins.
APX803L-16W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 0ms Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
APX803L-16W5-7 FAQ
1.How can I place an order for APX803L-16W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-16W5-7 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-16W5-7 reliable?
The price and inventory of APX803L-16W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-16W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-16W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-16W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-16W5-7?
APX803L-16W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-16W5-7 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-16W5-7?
For technical support, including APX803L-16W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-16W5-7 requirements.
6.How does Aetrix verify that APX803L-16W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-16W5-7 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-16W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-16W5-7?
All APX803L-16W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-16W5-7, 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-16W5-7 part is unused and in its original packaging.
Return procedure for APX803L-16W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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