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Diodes Incorporated APX803L05-22SA-7
- Part No.:
- APX803L05-22SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-22SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
APX803L05-22SA-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 55ms reset timeout. It delivers active-low open-drain reset signaling in battery-powered IoT sensors, portable medical devices, and low-power microcontroller systems.
For engineers reviewing the APX803L05-22SA-7 datasheet, APX803L05-22SA-7 pinout, APX803L05-22SA-7 application, or APX803L05-22SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, open-drain sink capability (3.5mA @ 0.4V), and SOT23 package compatibility with space-constrained PCB layouts.
Technical Context
The APX803L05-22SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×VTH) to prevent oscillation during power-up/down transitions. Its comparator architecture triggers reset when VCC drops below 5.0V and holds until VCC exceeds 5.0V + hysteresis.
Reset assertion occurs within 20µs of VCC crossing the falling threshold, and the fixed 55ms timeout ensures reliable processor initialization across ambient temperatures from –40°C to +85°C, with threshold drift limited to 50ppm/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 5.0V ±1.5% - guarantees deterministic reset initiation at nominal system rail voltage |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell–powered devices without measurable battery drain |
| Reset Timeout | 55ms - provides sufficient hold time for ARM Cortex-M0+ and RISC-V MCU boot sequences |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration with pull-up to any logic rail (1.8V–5.5V) |
| Response Time | 20µs - ensures rapid fault capture before digital logic corruption occurs |
| Operating Voltage | 0.9V to 5.5V - supports operation down to brown-out levels while maintaining detection integrity |
| Temp Coefficient | 50ppm/°C - limits threshold shift to ±4.25mV over full –40°C to +85°C range |
Pinout & Package
SOT23-3 package (2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch), RoHS-compliant, lead-free, halogen-free "Green" construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Return path for internal bias circuitry; must be connected directly to system ground plane for noise immunity |
| 2 (RESET) | Open-Drain Output | Active-low reset signal; requires external pull-up resistor (typically 10kΩ) to host logic rail |
| 3 (VCC) | Supply Input | Powers internal reference and comparator; accepts 0.9V–5.5V with no external decoupling required |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Eliminates BOM cost and layout area for RC timing networks or external references |
| Fixed 5.0V threshold | Guarantees consistent reset point across production lots without calibration or trimming |
| ±1.5% threshold accuracy | Reduces design margin requirements versus ±3% alternatives, enabling tighter VCC tolerancing |
| 55ms factory-set delay | Matches typical flash memory initialization times in 32-bit MCUs without software polling overhead |
| 1µA supply current | Permits integration into always-on wake-up circuits without compromising sleep-mode battery life |
Applications
| Smart Wearable Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous heart-rate monitoring in wrist-worn ECG patch with CR2032 battery. IC Role / Device Role / Timing Role: Voltage supervisor ensuring clean reset before analog front-end ADC initialization. Use Value: 1µA quiescent current extends battery life beyond 18 months; 5.0V threshold aligns with regulated 5V LDO output feeding MCU and sensor interface. | Use Scenario: Remote digital input module operating in factory automation with 24VDC field power. IC Role / Device Role / Timing Role: Supervises local 5V logic rail derived from buck converter; asserts reset on undervoltage transients. Use Value: ±1.5% threshold accuracy prevents nuisance resets during 24V line ripple; 55ms timeout accommodates converter soft-start duration. |
| Medical Infusion Pump Controllers | Automotive Body Control Modules (BCM) |
Use Scenario: Safety-critical infusion pump using ARM Cortex-M4 MCU with dual-rail power (3.3V core, 5V peripherals). IC Role / Device Role / Timing Role: Monitors 5V peripheral rail to guarantee motor driver and display controller reset before firmware execution. Use Value: 20µs response time prevents partial register writes during brownout; open-drain output interfaces cleanly with 3.3V reset controller logic. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting via CAN-connected MCU. IC Role / Device Role / Timing Role: Supervises 5V domain powering CAN transceiver and LIN interface ICs during vehicle ignition cycles. Use Value: Stable 55ms reset pulse ensures CAN PHY initialization completes before stack startup; operates reliably from –40°C cold cranking to +85°C under-hood conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E50DBZR | Same 5.0V threshold, but 350ms default delay and 0.8µA supply current | Lacks 55ms option; better suited for systems requiring longer reset hold during slow-ramp supplies | Select if extended timeout is needed and lower IQ is critical; verify compatibility with existing SOT23 footprint |
| MAX809SEUR+T | 5.0V threshold with 140ms delay, 1.2µA IQ, and push-pull output | Push-pull eliminates need for external pull-up but prevents wired-OR reset bus sharing | Choose for single-MCU designs where board space permits pull-up resistor omission and reset bus isolation is acceptable |
Compared with TLV803E50DBZR and MAX809SEUR+T, the APX803L05-22SA-7 uniquely balances ultra-low IQ, precise 55ms timing, and open-drain flexibility-making it optimal for multi-IC reset coordination in compact, battery-sensitive designs.
Availability
APX803L05-22SA-7 is available at Aetrix Electronics and suitable for smart wearable sensors, industrial PLC I/O modules, and medical infusion pump controllers requiring stable component supply across long-lifecycle programs.
Supply support for APX803L05-22SA-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 ICs for power management, signal integrity, and protection applications.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset generation in battery-operated and energy-conscious embedded systems.
FAQ
What is the minimum operating voltage for APX803L05-22SA-7?
The APX803L05-22SA-7 functions down to 0.9V supply voltage while maintaining valid reset assertion. Below this level, internal biasing fails and reset behavior becomes undefined. This 0.9V minimum enables use with deeply discharged lithium coin cells or low-dropout regulators in brownout scenarios.
Can APX803L05-22SA-7 drive a 10kΩ pull-up resistor to 3.3V?
Yes. With VOL ≤ 0.4V at 3.5mA sink current, the APX803L05-22SA-7 easily drives a 10kΩ pull-up to 3.3V, resulting in <0.33mA load and <0.33V drop-well within specification. This ensures robust logic-low assertion even with PCB trace capacitance up to 100pF.
Does the 55ms reset timeout vary with temperature?
Yes, but within controlled limits: the timeout shifts by less than ±10% from –40°C to +85°C per the datasheet's RESET Active Timeout Period vs. Temperature plot. At 25°C it is 55ms (typical), ranging from ~49ms to ~61ms across the full operating range-sufficient for all standard MCU boot sequences.
Is APX803L05-22SA-7 qualified for automotive applications?
No. While the device operates from –40°C to +85°C, it is not AEC-Q100 qualified nor manufactured in an IATF 16949-certified facility. For automotive use, Diodes recommends contacting their automotive team for qualified alternatives such as the APX809 series with PPAP support and AEC-Q100 Grade 2 certification.
APX803L05-22SA-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:
- 2.2V
- 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
APX803L05-22SA-7 FAQ
1.How can I place an order for APX803L05-22SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-22SA-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 APX803L05-22SA-7 reliable?
The price and inventory of APX803L05-22SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-22SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-22SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-22SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-22SA-7?
APX803L05-22SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-22SA-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 APX803L05-22SA-7?
For technical support, including APX803L05-22SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-22SA-7 requirements.
6.How does Aetrix verify that APX803L05-22SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-22SA-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 APX803L05-22SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-22SA-7?
All APX803L05-22SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-22SA-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 APX803L05-22SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-22SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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