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Diodes Incorporated APX803L-12W5-7
- Part No.:
- APX803L-12W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-12W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,765
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Product details
Overview
APX803L-12W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.2V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 0ms reset delay in a 3-pin SOT25 package. It delivers active-low open-drain reset signaling for power monitoring in battery-powered IoT sensors and portable medical devices.
For engineers reviewing the APX803L-12W5-7 datasheet, APX803L-12W5-7 pinout, APX803L-12W5-7 application, or APX803L-12W5-7 equivalent, this page details its fixed-threshold supervision function, low-quiescent-current operation, SOT25 thermal performance (θJA = 200°C/W), and compatibility with microprocessor reset sequencing requirements.
Technical Context
The APX803L-12W5-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent chatter during VCC recovery. Its internal comparator continuously monitors VCC against the factory-trimmed 1.2V threshold and asserts RESET when VCC drops below VTH–100mV.
With no external components required, it integrates a built-in recovery delay timer (0ms variant), open-drain output stage capable of sinking 3.5mA at 0.4V, and operates across –40°C to +85°C ambient while maintaining threshold stability (50ppm/°C tempco).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.2V ±1.5% - factory-trimmed fixed voltage for reliable brown-out detection at nominal supply rails |
| Supply Current | 1.0µA typical - enables multi-year battery life in always-on monitoring applications |
| Reset Delay | 0ms - immediate assertion upon threshold breach, suitable for fast-response MCU reset timing |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration and flexible pull-up voltage selection |
| Operating Voltage | 0.9V to 5.5V - supports supervision of 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic supplies |
| Reset Pulse Width | ≥20µs - meets minimum reset pulse duration requirements for ARM Cortex-M and RISC-V MCUs |
| Package Thermal Resistance | θJA = 200°C/W (SOT25) - enables stable operation up to +85°C ambient without derating |
Pinout & Package
SOT25 is a 3-pin surface-mount package with gull-wing leads, 1.3mm pitch, and exposed pad for enhanced thermal dissipation. Pin 1 = GND, Pin 2 = RESET (open-drain output), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground node; must be connected directly to system power plane with low-inductance path |
| 2 | RESET | Active-low open-drain output; requires external pull-up resistor to host VDD (e.g., 10kΩ to 3.3V) |
| 3 | VCC | Power input; supplies internal reference and comparator; decoupling capacitor (100nF) required at pin |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Self-contained supervision circuit eliminates BOM cost and layout area for RC timing networks |
| High threshold accuracy | ±1.5% tolerance ensures deterministic reset behavior across production lots and temperature |
| Ultra-low ICC | 1µA typical draw minimizes impact on battery capacity in energy-constrained edge nodes |
| Fast response time | 20µs VCC-to-RESET assertion enables compliance with tight MCU reset setup timing |
| RoHS/Green compliant | Fully lead-free, halogen-free, and antimony-free construction meets IEC 61249-2-21 and JEDEC JS709E |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with coin-cell battery and ultra-low-power BLE SoC. IC Role / Device Role / Timing Role: Monitors 1.2V LDO output powering sensor analog front-end and MCU core; triggers hard reset on brown-out. Use Value: Prevents firmware corruption during battery sag by asserting reset before VCC falls below MCU's 1.14V minimum operating voltage. |
Use Scenario: DIN-rail mounted digital input module with isolated 24V DC supply and 3.3V logic rail. IC Role / Device Role / Timing Role: Supervises 3.3V FPGA configuration voltage; provides immediate reset signal to prevent partial bitstream loading. Use Value: Eliminates need for discrete resistor-divider + comparator solution, reducing component count and calibration effort. |
| Smart Home Hub Controllers | Automotive Body Control Modules |
Use Scenario: Wi-Fi-enabled home automation hub powered by USB-C PD (5V) with internal 1.2V buck converter. IC Role / Device Role / Timing Role: Detects 1.2V rail collapse due to transient load surges; drives system-level reset line shared across SoC and PMIC. Use Value: Ensures deterministic restart after power interruption without requiring software-initiated watchdog recovery. |
Use Scenario: Door module with LIN transceiver and 1.2V CAN controller supply derived from local LDO. IC Role / Device Role / Timing Role: Provides fail-safe reset to microcontroller when 1.2V rail dips below specification during cold-crank events. Use Value: Meets ISO 16750-2 pulse 4a (cold crank) immunity requirement via hardware-level reset assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA12DPWR | 1.2V threshold, ±2.5% accuracy, 350nA ICC, SOT-23-3 package | Lower supply current but wider threshold tolerance; lacks guaranteed 20µs response spec | Preferred where battery life >10 years is critical and ±2.5% threshold variation is acceptable |
| MAX809SEUR+T | 1.2V threshold, ±2.0% accuracy, 12µA ICC, SOT-23-3 package | Higher quiescent current; includes manual reset input (MR) pin not present on APX803L | Chosen when system requires external reset initiation capability alongside power-on reset |
Compared with TLV803EA12DPWR and MAX809SEUR+T, the APX803L-12W5-7 offers superior threshold accuracy (±1.5% vs. ±2.0–2.5%) and lower ICC than MAX809 while retaining full SOT25 thermal performance-making it optimal for space-constrained, high-reliability embedded systems.
Availability
APX803L-12W5-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for APX803L-12W5-7 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 protection applications.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy power monitoring in battery-operated and energy-sensitive embedded systems.
FAQ
What is the maximum sink current capability of the APX803L-12W5-7 RESET pin?
The RESET pin can sink up to 20mA under absolute maximum conditions, but the recommended operating limit is 3.5mA at VOL ≤ 0.4V. This ensures reliable low-voltage assertion across temperature and process variations while maintaining noise margin for downstream logic interfaces.
Does the APX803L-12W5-7 require an external capacitor for stable operation?
Yes-a 100nF ceramic decoupling capacitor must be placed between VCC and GND, as close as possible to the device pins. This stabilizes the internal reference and prevents false resets caused by supply transients or PCB trace inductance.
Can the APX803L-12W5-7 be used to monitor voltages other than 1.2V?
No-the APX803L-12W5-7 has a factory-trimmed 1.2V threshold and is not adjustable. For other thresholds (e.g., 2.5V, 3.3V), select variants like APX803L-25W5-7 or APX803L-33W5-7, which share identical SOT25 packaging and electrical characteristics.
Is the APX803L-12W5-7 qualified for automotive applications?
The APX803L-12W5-7 is not AEC-Q100 qualified. Diodes offers automotive-grade alternatives (e.g., APX803L-12W5Q-7) with PPAP documentation, extended temperature range (–40°C to +125°C), and IATF 16949 manufacturing certification-contact Diodes sales for qualification status and part numbering.
APX803L-12W5-7 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:
- 1.2V
- 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-12W5-7 FAQ
1.How can I place an order for APX803L-12W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-12W5-7 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-12W5-7 reliable?
The price and inventory of APX803L-12W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-12W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-12W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-12W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-12W5-7?
APX803L-12W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-12W5-7 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-12W5-7?
For technical support, including APX803L-12W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-12W5-7 requirements.
6.How does Aetrix verify that APX803L-12W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-12W5-7 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-12W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-12W5-7?
All APX803L-12W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-12W5-7, 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-12W5-7 part is unused and in its original packaging.
Return procedure for APX803L-12W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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