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Diodes Incorporated APX803L05-19SA-7
- Part No.:
- APX803L05-19SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-19SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
APX803L05-19SA-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 and portable medical devices requiring ultra-low power consumption and reliable power-on reset.
For engineers reviewing the APX803L05-19SA-7 datasheet, APX803L05-19SA-7 pinout, APX803L05-19SA-7 application, or APX803L05-19SA-7 equivalent, this page details its fixed 5.0V detection threshold, SOT23-3 package configuration, 55ms delay option, and compatibility with microprocessor reset sequencing in space-constrained embedded systems.
Technical Context
The APX803L05-19SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×VTH) to prevent chatter during VCC recovery. Its comparator continuously monitors VCC against a factory-trimmed 5.0V threshold and asserts RESET low within 20µs when VCC drops below that level.
Reset remains asserted until VCC exceeds 5.0V + hysteresis, then holds active for exactly 55ms (typ.) before releasing-ensuring stable processor initialization. The open-drain output supports wired-OR configurations and external pull-up flexibility up to 5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 5.0V ±1.5% - precisely matches 5V logic supply rails for reliable brown-out detection |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables multi-year operation on coin-cell batteries |
| Reset Timeout | 55ms (typ.) - meets minimum reset pulse width requirements for ARM Cortex-M and RISC-V MCUs |
| Response Time | 20µs - ensures fast fault capture before system state corruption occurs |
| Output Type | Open-drain, active-low - allows flexible pull-up voltage selection and multi-device reset bus sharing |
| Operating Voltage | 0.9V to 5.5V - supports operation down to near-threshold VCC for early-fail detection |
| Temperature Range | -40°C to +85°C - validated for industrial-grade embedded control environments |
Pinout & Package
SOT23-3 package (JEDEC TO-236), 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 circuitry; must be connected directly to system ground plane |
| 2 (VCC) | Supply Input | Monitored power rail input; powers internal reference and comparator |
| 3 (RESET) | Open-Drain Output | Active-low reset signal; requires external pull-up resistor (typically 10kΩ to 3.3V/5V) |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V threshold | Factory-trimmed without external resistors-eliminates BOM cost and layout area for voltage-setting networks |
| 55ms reset timeout | Guaranteed minimum assertion time ensures full MCU core and peripheral initialization before release |
| ±1.5% threshold accuracy | Reduces design margin overhead vs. ±3% alternatives-enables tighter VCC tolerance allocation |
| 20µs response time | Prevents metastability in clock domains during rapid supply collapse |
| 1µA supply current | Permits integration into always-on sensor nodes without compromising battery life |
Applications
| Smart Wearable Power Management | Industrial PLC I/O Module |
|---|---|
Use Scenario: Continuous heart-rate monitoring using BLE SoC powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Voltage detector asserting reset during battery sag below 5.0V to prevent firmware crash. Use Value: 1µA quiescent current extends operational lifetime beyond 18 months; 55ms timeout satisfies Nordic nRF52832 reset timing spec. |
Use Scenario: DIN-rail mounted digital input module operating from 24VDC converted to 5V. IC Role / Device Role / Timing Role: Supervises 5V logic rail to trigger safe shutdown on undervoltage events. Use Value: ±1.5% accuracy ensures detection at 4.925V-preventing false resets during line transients per IEC 61000-4-11. |
| Portable Diagnostic Ultrasound Probe | Automotive Cabin Controller |
Use Scenario: Handheld ultrasound probe with Li-ion battery and FPGA-based beamformer. IC Role / Device Role / Timing Role: Monitors 5V analog front-end supply to hold FPGA in reset until stable. Use Value: 20µs response captures sub-cycle supply dips; open-drain output interfaces directly to FPGA PROG_B pin. |
Use Scenario: HVAC control unit powered via automotive 12V system with LDO-regulated 5V rail. IC Role / Device Role / Timing Role: Detects 5V rail collapse during cold-crank (6.5V battery dip) to initiate graceful firmware save. Use Value: -40°C to +85°C rating ensures function across engine bay thermal extremes; 55ms timeout aligns with AUTOSAR BSW reset sequence. |
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, 200ms default delay, 0.5µA IQ, SOT23-3 | Lacks 55ms option; longer delay may exceed MCU max reset timeout | Choose only if system requires >200ms reset hold and ultra-low 0.5µA IQ is critical |
| MAX809SEUR+T | 5.0V threshold, 140ms delay, 10µA IQ, SOT23-3 | 10× higher supply current; fixed 140ms delay incompatible with tight-reset systems | Select only for legacy designs where MAX809 footprint compatibility is mandatory |
Compared with TLV803E50DBVR and MAX809SEUR+T, the APX803L05-19SA-7 uniquely delivers 55ms timing precision at 1µA IQ in the same SOT23-3 footprint-making it optimal for next-gen portable electronics where reset timing and battery life are co-constrained.
Availability
APX803L05-19SA-7 is available at Aetrix Electronics and suitable for smart wearables, industrial I/O modules, and portable medical diagnostics requiring stable component supply and guaranteed long-term manufacturability.
Supply support for APX803L05-19SA-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, with manufacturing certified to IATF 16949 and quality systems aligned to 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-sensitive and thermally demanding embedded applications.
FAQ
What is the exact reset timeout for APX803L05-19SA-7?
The APX803L05-19SA-7 provides a nominal 55ms reset timeout (typical), with guaranteed minimum of 35ms and maximum of 75ms across temperature and voltage. This value is factory-programmed and does not require external components or configuration pins.
Can APX803L05-19SA-7 monitor voltages other than 5.0V?
No-the '05' suffix denotes a fixed 5.0V detection threshold. The APX803L family offers discrete voltage options from 1.2V to 5.0V in 0.1V steps (e.g., APX803L20 = 2.0V, APX803L40 = 4.0V); no user-adjustable or resistor-programmable variants exist.
Is an external pull-up resistor required on the RESET pin?
Yes-an external pull-up resistor (typically 4.7kΩ–10kΩ to 3.3V or 5V) is mandatory because the RESET pin is open-drain. Without it, the output cannot drive high, and the reset signal will remain indeterminate after release.
Does APX803L05-19SA-7 meet automotive qualification standards?
The APX803L05-19SA-7 itself is not AEC-Q100 qualified; however, Diodes offers automotive-grade versions (e.g., APX803L05-19SA-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. Contact Aetrix for qualified part numbers.
APX803L05-19SA-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:
- 1.9V
- 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
APX803L05-19SA-7 FAQ
1.How can I place an order for APX803L05-19SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-19SA-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 APX803L05-19SA-7 reliable?
The price and inventory of APX803L05-19SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-19SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-19SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-19SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-19SA-7?
APX803L05-19SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-19SA-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 APX803L05-19SA-7?
For technical support, including APX803L05-19SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-19SA-7 requirements.
6.How does Aetrix verify that APX803L05-19SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-19SA-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 APX803L05-19SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-19SA-7?
All APX803L05-19SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-19SA-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 APX803L05-19SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-19SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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