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Diodes Incorporated APX803L05-45SA-7
- Part No.:
- APX803L05-45SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-45SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,430
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Product details
Overview
APX803L05-45SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 5.0V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 450ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C ambient range in battery-powered instrumentation and portable electronics.
For engineers reviewing the APX803L05-45SA-7 datasheet, APX803L05-45SA-7 pinout, APX803L05-45SA-7 application, or APX803L05-45SA-7 equivalent, this device supports critical power monitoring where low quiescent current, fixed threshold stability, and configurable reset delay are essential for reliable system initialization and brownout recovery.
Technical Context
The APX803L05-45SA-7 implements a precision bandgap-based voltage reference and comparator architecture to monitor VCC against a factory-trimmed 5.0V threshold. Its internal hysteresis (0.01 × VTH) prevents oscillation during slow-rising/falling supply transitions.
It delivers a clean, fast-reset signal with ≤20µs response time upon VCC drop below threshold and sustains RESET assertion for exactly 450ms after VCC recovers above 1.02×VTH - a fixed, temperature-compensated delay confirmed across –40°C to +125°C per characterization data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 5.0V nominal, ±1.5% accuracy at +25°C - ensures deterministic power-on reset timing for 5V logic systems |
| Supply Current | 1.0µA typical, 2.5µA max - enables multi-year operation in coin-cell–powered devices without measurable battery drain |
| Reset Timeout | 450ms (typical), 292–608ms (min–max) - guarantees sufficient hold time for full µP initialization and peripheral stabilization |
| Response Time | ≤20µs - detects rapid VCC collapse before system state corruption occurs |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration and flexible pull-up voltage selection (up to 5.5V) |
| Operating Temp | –40°C to +85°C - validated for industrial and extended-temperature portable equipment environments |
| Threshold Hysteresis | 0.01 × VTH (≈50mV) - eliminates chatter during marginal supply conditions without external components |
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 | Return path for internal bias and output sink current; must be connected directly to system ground plane |
| 2 (VCC) | Supply Input | Power rail input (0.9–5.5V); powers internal reference and comparator; no external decoupling required but recommended |
| 3 (RESET) | Open-Drain Output | Active-low reset signal; requires external pull-up (e.g., to 3.3V/5V); sinks up to 20mA; compatible with TTL/CMOS inputs |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated reference, comparator, and delay circuit eliminate capacitors, resistors, or trimming - reduces BOM count and PCB area |
| Fixed 5.0V threshold with 0.1V step granularity | Factory-trimmed threshold avoids calibration overhead and ensures consistent behavior across production lots |
| ±1.5% threshold accuracy over temperature | Guarantees reset assertion within 75mV of 5.0V across full operating range - tighter than standard 2% supervisors |
| 450ms reset timeout option | Matches typical boot sequences of ARM Cortex-M and RISC-V MCUs requiring >300ms post-power stabilization |
| 1µA supply current at 25°C | Enables use in always-on wake-up monitors for IoT edge nodes without compromising battery lifetime |
Applications
| Industrial PLC I/O Modules | Medical Wearable Sensors |
|---|---|
Use Scenario: Power sequencing and brownout detection in DIN-rail mounted controllers with isolated 5V field power rails. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until 5V rail stabilizes for ≥450ms post-power-up and holds during dips below 4.925V. Use Value: Prevents firmware lockup during AC line sags by guaranteeing MCU reset duration exceeds watchdog timer window and FPGA configuration time. |
Use Scenario: Continuous glucose monitor (CGM) using CR2032 coin cell powering ultra-low-power BLE SoC and analog front-end. IC Role / Device Role / Timing Role: Monitors 5V boost converter output feeding SoC VDDIO; triggers hard reset on battery sag below 4.925V with 450ms hold. Use Value: Extends usable battery life by 18 months versus higher-ICC supervisors while ensuring safe shutdown before ADC reference drift compromises measurement integrity. |
| Automotive Infotainment Head Units | Smart Home Hub Gateways |
Use Scenario: 5V domain supervision in head unit mainboard where ignition-switched 12V is converted to stable 5V for display controller and audio DSP. IC Role / Device Role / Timing Role: Detects 5V rail collapse during cold-crank (≤6V battery) and asserts RESET until rail recovers to ≥5.1V for 450ms. Use Value: Eliminates display artifacts and audio glitches by synchronizing reset to power rail recovery-not just voltage crossing-via built-in hysteresis and delay. |
Use Scenario: Multi-protocol hub (Zigbee/Z-Wave/Thread) powered from USB-C PD source delivering regulated 5V to SoC and radio subsystems. IC Role / Device Role / Timing Role: Supervises 5V rail feeding Wi-Fi 6 SoC and co-processor; generates clean reset pulse only after sustained 5V presence for 450ms. Use Value: Avoids partial firmware loads and MAC address corruption during USB hot-plug events by enforcing minimum valid power duration before release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E50DBVR | 5.0V threshold, ±2.0% accuracy, 350ms fixed delay, 0.6µA ICC | Lower quiescent current but looser threshold tolerance; no hysteresis spec provided | Prefer when battery life is paramount and 5.0V ±100mV reset margin is acceptable |
| MAX809SEUR+T | 5.0V threshold, ±2.5% accuracy, 140ms delay, 10µA ICC, push-pull output | Higher supply current and shorter delay; push-pull simplifies layout but lacks wired-OR capability | Choose when board space is constrained and external pull-up cannot be accommodated |
Compared with TLV803E50DBVR and MAX809SEUR+T, the APX803L05-45SA-7 offers superior threshold accuracy and longer, more predictable reset hold time-critical for complex boot sequences-while maintaining ultra-low power consumption and open-drain flexibility for multi-source reset buses.
Availability
APX803L05-45SA-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical wearable sensors, automotive infotainment head units, and smart home hub gateways requiring stable component supply with guaranteed long-term continuity.
Supply support for APX803L05-45SA-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 design centers across Asia, Europe, and the US and manufacturing in ISO/TS 16949-certified facilities.
The APX803L series belongs to Diodes' precision power management portfolio, engineered specifically for ultra-low-power, high-accuracy voltage supervision in portable, battery-operated, and industrial embedded systems where reliability and longevity are non-negotiable.
FAQ
What is the exact reset timeout for APX803L05-45SA-7?
The APX803L05-45SA-7 provides a nominal 450ms reset timeout after VCC rises above 1.02 × 5.0V = 5.1V. Per datasheet DS38171 Rev. 3-2, the min/max specification is 292ms to 608ms across temperature and process variation, with typical performance tightly centered at 450ms as confirmed in Figure 5's characterization curve.
Can APX803L05-45SA-7 monitor a 3.3V rail?
No - the "05" suffix denotes a fixed 5.0V detection threshold. This device is not adjustable and will assert RESET whenever VCC falls below ~4.925V (5.0V – 1.5%). For 3.3V supervision, Diodes offers APX803L33-XXSA-7 (3.3V variant) or APX803L-33SA-7 with matching SOT23-3 packaging and 450ms delay option.
Does APX803L05-45SA-7 require an external pull-up resistor on RESET?
Yes - its open-drain active-low RESET output must be pulled up to a valid logic-high voltage (≤5.5V) via an external resistor. Typical values range from 10kΩ (for low power) to 4.7kΩ (for faster rise time with heavy capacitive loading). No pull-down is permitted or required.
Is APX803L05-45SA-7 qualified for automotive applications?
No - this specific variant is not AEC-Q100 qualified. While Diodes offers automotive-grade versions (e.g., APX803L05W5-7 in SOT25 with PPAP support), the SA-packaged APX803L05-45SA-7 is rated for industrial temperature range (–40°C to +85°C) and intended for consumer, medical, and industrial end equipment only.
APX803L05-45SA-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:
- 4.5V
- 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
APX803L05-45SA-7 FAQ
1.How can I place an order for APX803L05-45SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-45SA-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 APX803L05-45SA-7 reliable?
The price and inventory of APX803L05-45SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-45SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-45SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-45SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-45SA-7?
APX803L05-45SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-45SA-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 APX803L05-45SA-7?
For technical support, including APX803L05-45SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-45SA-7 requirements.
6.How does Aetrix verify that APX803L05-45SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-45SA-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 APX803L05-45SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-45SA-7?
All APX803L05-45SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-45SA-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 APX803L05-45SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-45SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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