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Diodes Incorporated APX803L-35W5-7
- Part No.:
- APX803L-35W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-35W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,546
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Product details
Overview
APX803L-35W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply rails in battery-powered and embedded digital systems. It features a fixed 3.5V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 220ms reset timeout - enabling reliable power-up sequencing in portable instrumentation and IoT edge nodes.
For engineers reviewing the APX803L-35W5-7 datasheet, APX803L-35W5-7 pinout, APX803L-35W5-7 application, or APX803L-35W5-7 equivalent, this device delivers precise, low-burden voltage supervision with factory-set timing and no external components required - critical for space-constrained, energy-sensitive designs.
Technical Context
The APX803L-35W5-7 implements a precision bandgap-based voltage reference and comparator architecture to detect VCC falling below 3.5V with ±1.5% tolerance over -40°C to +85°C. Its internal hysteresis (0.01 × VTH) prevents oscillation during slow-rising or noisy supply transitions.
It integrates a programmable reset timeout block delivering 220ms (APX803L20 variant) after VCC recovery, with reset assertion occurring within 20µs of threshold breach. The open-drain output supports wired-OR configuration and interfaces directly with µP reset inputs requiring active-low assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Voltage | 3.5V ±1.5% - factory-trimmed threshold ensures accurate brown-out detection without calibration. |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| Reset Timeout | 220ms - guarantees stable µP initialization after power recovery, meeting JEDEC JESD8-12B requirements. |
| Output Type | Open-drain, active-low - allows flexible pull-up voltage selection and multi-device reset bus sharing. |
| Response Time | 20µs - fast assertion prevents µP execution from unstable supply conditions. |
| Operating Range | VCC = 0.9V to 5.5V - supports wide-input systems including Li-ion, USB, and 3.3V/5V logic rails. |
| Temperature Range | -40°C to +85°C - qualified for industrial and consumer-grade embedded environments. |
Pinout & Package
SOT25 (5-pin) package with exposed pad for thermal performance; pin-compatible with industry-standard 3-pin SOT23 variants but adds two NC pins for mechanical stability and layout flexibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and reset output sink path. |
| 2 | RESET | Open-drain output; pulled low when VCC < 3.5V, high-impedance otherwise. |
| 3 | VCC | Power input; supplies internal reference, comparator, and timing circuitry. |
| 4, 5 | NC | No connection - unused pins; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - eliminates measurable impact on battery life in always-on supervision. |
| Factory-set 3.5V threshold | ±1.5% accuracy at +25°C, ±50ppm/°C drift - removes need for external resistor dividers or trimming. |
| Programmable reset timeout | 220ms delay ensures µP clocks, memory, and peripherals stabilize before release. |
| No external components | Self-contained detection and timing - reduces BOM count, PCB area, and qualification effort. |
| RoHS-compliant & halogen-free | Lead-free, <900ppm Br+Cl, <1000ppm Sb - meets global environmental compliance mandates. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 battery with BLE transmission. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; asserts RESET if voltage sags below 3.5V due to battery aging or load surge. Use Value: Prevents corrupted sensor readings or failed BLE handshakes by enforcing clean µP reboot before data capture. |
Use Scenario: DIN-rail mounted I/O module operating in factory ambient (-25°C to +70°C). IC Role / Device Role / Timing Role: Supervises 5V system rail feeding FPGA configuration and analog front-end; provides 220ms reset hold time. Use Value: Ensures FPGA completes configuration and ADC references settle before enabling signal acquisition. |
| Smart Home Hub Controllers | Asset Tracking Beacons |
Use Scenario: Wi-Fi + Zigbee hub using dual-core MCU with 1.8V/3.3V domain partitioning. IC Role / Device Role / Timing Role: Detects 3.3V supply integrity; drives shared reset line for both cores and PMIC. Use Value: Guarantees synchronized restart across voltage domains during AC adapter dropout or surge events. |
Use Scenario: GPS-enabled logistics tag powered by 3.6V Li-SOCl₂ battery with 10-year shelf life. IC Role / Device Role / Timing Role: Low-current supervisor asserting RESET only during deep brown-out (<3.5V), not transient dips. Use Value: Avoids unnecessary reboots during brief antenna transmit pulses, preserving battery longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L20-35SA-7 | SOT23-3 package; identical 3.5V threshold and 220ms timeout; 1µA supply current. | Lacks NC pins; smaller footprint but less mechanical robustness in high-vibration environments. | Select for ultra-compact layouts where board space is constrained and vibration is minimal. |
| TLV803EA35DBZR | Texas Instruments part; same 3.5V threshold, 200ms timeout, 0.5µA supply current; push-pull output option available. | Push-pull variant requires different pull-up design; slightly tighter ±0.5% threshold tolerance. | Choose when lower supply current or push-pull drive is mandatory, accepting TI's alternate qualification flow. |
Compared with APX803L20-35SA-7, the W5 package offers improved thermal dissipation and mounting reliability; versus TLV803EA35DBZR, the APX803L-35W5-7 provides guaranteed open-drain compatibility and broader industrial temperature support without design revalidation.
Availability
APX803L-35W5-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and asset tracking beacons requiring stable component supply across long-lifecycle deployments.
Supply support for APX803L-35W5-7 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 for power management, signal integrity, and connectivity applications.
The APX803L series belongs to Diodes' µP supervisory product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-critical and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L-35W5-7?
The APX803L-35W5-7 has a factory-set detection threshold of 3.5V with ±1.5% accuracy over the full operating temperature range (-40°C to +85°C), verified per DS38171 Rev. 3–2 electrical characteristics table. This tolerance includes initial trim error and temperature-induced drift up to ±50ppm/°C.
Does APX803L-35W5-7 require external capacitors or resistors?
No. The APX803L-35W5-7 is fully self-contained: its 3.5V threshold is internally trimmed, timing is generated by an on-chip RC network, and the open-drain RESET output requires only an external pull-up resistor (value selected per load and voltage). No timing capacitor or divider resistors are needed.
How does the 220ms reset timeout behave during temperature variation?
The 220ms timeout (APX803L20 variant) varies by ±15% across -40°C to +125°C, as shown in Figure 5 of DS38171. At -40°C it measures ~187ms; at +125°C it extends to ~253ms. This monotonic shift is characterized and documented - no functional failure occurs within datasheet limits.
Can APX803L-35W5-7 be used in automotive applications?
The APX803L-35W5-7 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade alternatives (e.g., APX809 series) with PPAP support and IATF 16949 manufacturing. For non-safety-critical infotainment or body electronics, engineering validation is required prior to deployment.
APX803L-35W5-7 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:
- 3.5V
- 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-35W5-7 FAQ
1.How can I place an order for APX803L-35W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-35W5-7 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-35W5-7 reliable?
The price and inventory of APX803L-35W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-35W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-35W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-35W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-35W5-7?
APX803L-35W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-35W5-7 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-35W5-7?
For technical support, including APX803L-35W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-35W5-7 requirements.
6.How does Aetrix verify that APX803L-35W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-35W5-7 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-35W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-35W5-7?
All APX803L-35W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-35W5-7, 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-35W5-7 part is unused and in its original packaging.
Return procedure for APX803L-35W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L-35W5-7 Tags
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MIC826SYMT-TR
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