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Diodes Incorporated APX803L05-15SA-7
- Part No.:
- APX803L05-15SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-15SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
APX803L05-15SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.5V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 55ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C in battery-powered instrumentation and portable embedded systems.
For engineers reviewing the APX803L05-15SA-7 datasheet, APX803L05-15SA-7 pinout, APX803L05-15SA-7 application, or APX803L05-15SA-7 equivalent, this device delivers verified low-current supervision with fixed internal threshold, fast 20µs reset assertion, and SOT23-3 package compatibility for space-constrained power monitoring designs.
Technical Context
The APX803L05-15SA-7 implements a precision bandgap-based voltage reference and comparator architecture to monitor VCC against a factory-trimmed 1.5V threshold. Its hysteresis (0.01×VTH) prevents oscillation during slow supply ramps, and its internal delay timer ensures stable reset assertion before system initialization.
It uses an open-drain NMOS output stage capable of sinking ≥3.5mA at 0.4V max VOL, requiring an external pull-up for logic-level compatibility. No external components are needed-only a 100nF bypass capacitor on VCC is recommended per typical application circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 1.5V ±1.5% - factory-trimmed fixed detection level for reliable 1.5V rail monitoring |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables multi-year operation in coin-cell–powered devices |
| Reset Timeout | 55ms - ensures sufficient hold time for µP boot sequence after power recovery |
| Reset Response Time | 20µs - guarantees rapid fault detection during VCC droop events |
| Output Type | Open-drain, active-low - supports wired-OR reset buses and flexible voltage-level interfacing |
| Operating Temp | –40°C to +85°C - qualified for industrial and portable consumer environments |
| VCC Range | 0.9V to 5.5V - supports supervision of 1.2V–3.3V logic rails with margin |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm × 1.0mm body, gull-wing leads, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path; must be connected directly to system ground plane |
| 2 | RESET | Open-drain active-low output; requires external pull-up resistor for logic-high state |
| 3 | VCC | Power input pin; supplies internal circuitry and senses monitored voltage rail |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA typical supply current minimizes load on energy-sensitive rails like coin-cell or supercap backups |
| Fixed 1.5V Threshold | No external resistors required-eliminates BOM cost, layout area, and trimming uncertainty |
| 55ms Reset Delay | Guaranteed minimum reset pulse width ensures robust µP reset sequencing without external RC timing |
| ±1.5% VTH Accuracy | Reduces false resets and improves system reliability over temperature and process variation |
| 20µs Response Time | Enables detection of fast transients that could otherwise cause µP lockup or data corruption |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters require reliable power-on reset and brownout detection during intermittent battery discharge. IC Role / Device Role / Timing Role: Monitors 1.5V reference rail derived from LDO output; asserts RESET until VCC stabilizes post-battery insertion or wake-up. Use Value: Prevents firmware execution under marginal voltage, avoiding memory corruption and sensor calibration drift. |
Use Scenario: DIN-rail mounted PLC modules operate in electrically noisy factory environments with fluctuating 24VDC inputs stepped down to 1.5V logic rails. IC Role / Device Role / Timing Role: Supervises local 1.5V domain powering FPGA configuration logic and ADC reference buffers. Use Value: Ensures deterministic FPGA reconfiguration and analog measurement validity after line surges or dips. |
| Smart Home Hub Controllers | Wearable Fitness Trackers |
Use Scenario: Multi-rail SoC-based hubs integrate Wi-Fi, BLE, and Zigbee radios with tight power budgets and frequent sleep/wake cycles. IC Role / Device Role / Timing Role: Detects 1.5V core supply integrity during deep-sleep exit; provides 55ms reset hold for SoC PLL lock and memory initialization. Use Value: Eliminates boot failures caused by premature clock or memory access during voltage ramp-up. |
Use Scenario: Ultra-thin wrist-worn trackers use single-cell Li-ion with dynamic voltage scaling, dropping below 1.5V during peak sensor sampling. IC Role / Device Role / Timing Role: Triggers controlled shutdown via MCU interrupt when 1.5V rail falls below threshold, preserving flash write integrity. Use Value: Enables graceful state save before brownout, preventing firmware corruption and user data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA15DBZR | 1.5V threshold, 350ms default delay, 0.5µA ICC (typ.), SOT23-3 | Longer reset timeout; better suited for systems requiring extended hold time after power recovery | Select when >55ms reset duration is needed and ultra-low ICC is critical |
| MAX809SEUR+T | 1.5V threshold, 240ms delay, 12µA ICC (typ.), SOT23-3 | Higher supply current but wider operating voltage range (1V–5.5V) and AEC-Q100 Grade 3 option | Select for automotive-qualified designs where longer delay and broader VCC tolerance outweigh ICC penalty |
Compared with TLV803EA15DBZR and MAX809SEUR+T, the APX803L05-15SA-7 offers optimal balance of low ICC (1µA), precise 1.5V threshold accuracy (±1.5%), and industry-standard 55ms reset timing-making it ideal for high-volume portable and industrial µP supervision where power efficiency and timing predictability are jointly critical.
Availability
APX803L05-15SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and wearable fitness trackers requiring stable component supply and long-term manufacturability.
Supply support for APX803L05-15SA-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 µP supervision in battery-critical and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L05-15SA-7?
The APX803L05-15SA-7 has a nominal reset threshold of 1.5V with a guaranteed accuracy of ±1.5% over temperature (–40°C to +85°C), meaning the actual trip point falls between 1.4775V and 1.5225V at 25°C and remains within ±1.5% across full operating range.
Can APX803L05-15SA-7 drive a standard CMOS input directly?
No-it features an open-drain active-low output and requires an external pull-up resistor to the target logic rail (e.g., 1.8V or 3.3V). The output can sink ≥3.5mA while maintaining ≤0.4V VOL, enabling direct interface with most µP reset inputs when properly pulled up.
Is a bypass capacitor required, and what value is recommended?
Yes-a 100nF ceramic capacitor is recommended between VCC and GND, placed as close as possible to the device pins. This stabilizes the internal reference and suppresses high-frequency noise that could cause false resets during transient events.
Does APX803L05-15SA-7 include hysteresis, and how much?
Yes-it integrates 0.01×VTH (15mV typical) hysteresis between rising and falling thresholds. This prevents output chatter during slow-rising or noisy supply ramps and ensures clean, monotonic reset release after recovery.
APX803L05-15SA-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:
- 1.5V
- 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
APX803L05-15SA-7 FAQ
1.How can I place an order for APX803L05-15SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-15SA-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 APX803L05-15SA-7 reliable?
The price and inventory of APX803L05-15SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-15SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-15SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-15SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-15SA-7?
APX803L05-15SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-15SA-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 APX803L05-15SA-7?
For technical support, including APX803L05-15SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-15SA-7 requirements.
6.How does Aetrix verify that APX803L05-15SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-15SA-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 APX803L05-15SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-15SA-7?
All APX803L05-15SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-15SA-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 APX803L05-15SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-15SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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