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Diodes Incorporated APX803L20-17W5-7
- Part No.:
- APX803L20-17W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-17W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,747
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Product details
Overview
APX803L20-17W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.0V threshold detection with ±1.5% accuracy, 220ms reset timeout, and 1µA typical supply current 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 APX803L20-17W5-7 datasheet, APX803L20-17W5-7 pinout, APX803L20-17W5-7 application, or APX803L20-17W5-7 equivalent, this device supports critical low-power system initialization, brown-out protection, and reset timing control where supply current <2.5µA max and threshold stability across -40°C to +85°C are required.
Technical Context
The APX803L20-17W5-7 implements a fixed-threshold voltage detector with internal hysteresis (0.01×VTH) and temperature-compensated bandgap reference, enabling stable 2.0V detection across -40°C to +85°C operating range. Its open-drain RESET output sinks up to 20mA and requires no external pull-up for basic operation.
Reset assertion occurs within 20µs of VCC falling below 2.0V, and recovery remains delayed for 220ms after VCC rises above 2.0V - a factory-programmed delay option confirmed in the ordering code "20". The device operates from 0.9V to 5.5V supply and features no external components requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.0V ±1.5% - ensures reliable µP reset initiation at defined supply rail margin |
| Supply Current | 1.0µA typical, 2.5µA max - enables multi-year operation in coin-cell–powered systems |
| Reset Timeout | 220ms (min–max: 143–297ms) - provides sufficient hold-off for power rail stabilization post-brownout |
| Response Time | 20µs max - guarantees fast fault detection before digital logic corruption |
| Output Type | Open-drain, active-low - allows wired-OR reset bus configuration with multiple supervisors |
| Operating Temp | -40°C to +85°C - supports industrial and extended commercial ambient environments |
| Package | SOT25 (3-pin) - surface-mount footprint compatible with automated assembly and space-constrained PCBs |
Pinout & Package
SOT25 is a 3-pin plastic surface-mount package with gull-wing leads, optimized for thermal dissipation (θJA = 200°C/W) and reflow compatibility. Pin 1 = GND, Pin 2 = RESET (open-drain), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path for internal comparator and output stage |
| 2 | RESET | Active-low open-drain output; must be externally pulled up to enable reset signaling |
| 3 | VCC | Power supply input; powers internal reference, comparator, and output driver |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.0V Threshold | Factory-trimmed internal reference eliminates need for external resistor network |
| 220ms Recovery Delay | Internally generated timing ensures consistent reset pulse width without capacitor dependency |
| 1µA Supply Current | Enables integration into always-on subsystems without compromising battery life |
| ±1.5% Threshold Accuracy | Reduces design margin overhead compared to ±3% alternatives, improving supply rail utilization |
| Open-Drain Output | Supports multi-source reset bus architecture and level-shifting via external pull-up |
Applications
| Smart Wearable Power Sequencing | Industrial Sensor Node Supervision |
|---|---|
Use Scenario: A wrist-worn health monitor uses APX803L20-17W5-7 to supervise its 2.0V LDO output powering the BLE SoC and analog front-end. IC Role / Device Role / Timing Role: Voltage detector initiating hard reset when battery voltage drops below 2.0V during deep discharge. Use Value: Prevents firmware lockup and data corruption by enforcing clean restart before supply collapse. |
Use Scenario: A wireless vibration sensor node deployed in factory machinery monitors its 2.0V system rail derived from energy harvesting. IC Role / Device Role / Timing Role: Supervisor ensuring MCU resets only after stable 220ms post-recovery, avoiding false wakeups from transient dips. Use Value: Extends usable battery life by eliminating spurious resets while guaranteeing deterministic boot behavior. |
| Portable ECG Device Brown-Out Protection | Edge AI Module Power Integrity Check |
Use Scenario: A handheld ECG device relies on APX803L20-17W5-7 to detect sag in its 2.0V analog signal chain supply during high-current ADC sampling. IC Role / Device Role / Timing Role: Precision threshold detector triggering reset if VCC falls below 2.0V for >20µs, with 220ms debounce. Use Value: Maintains clinical-grade signal integrity by preventing analog circuit operation outside spec. |
Use Scenario: An edge inference module uses APX803L20-17W5-7 to validate 2.0V core voltage before loading neural network weights into SRAM. IC Role / Device Role / Timing Role: System-level power supervisor coordinating reset release with FPGA configuration completion. Use Value: Eliminates boot failures caused by marginal supply conditions during high-dynamic-load startup sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB20DBZR | 2.0V threshold, 200ms delay, 0.5µA supply current, SOT23-3 package | Lacks guaranteed 220ms timing; tighter 0.5% threshold accuracy but higher cost | Select when ultra-low current (<0.6µA) dominates over exact delay match |
| MAX809SEUR+T | 2.0V threshold, 140ms min delay, 10µA supply current, SOT23-3 package | Higher ICC reduces battery lifetime; shorter delay may cause premature release in noisy rails | Choose only for legacy designs requiring pin-for-pin replacement with relaxed current budget |
Compared with TLV803EB20DBZR and MAX809SEUR+T, the APX803L20-17W5-7 uniquely balances 220ms factory-set delay, sub-2.5µA max ICC, and SOT25 mechanical robustness-making it optimal for new designs prioritizing timing precision and long-term energy efficiency in compact form factors.
Availability
APX803L20-17W5-7 is available at Aetrix Electronics and suitable for smart wearable power sequencing, industrial sensor node supervision, portable ECG device brown-out protection, and edge AI module power integrity check requiring stable component supply across production lifecycles.
Supply support for APX803L20-17W5-7 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 manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q standards.
The APX803L series targets ultra-low-power supervisory functions in battery-operated and energy-constrained systems, emphasizing precision threshold stability, minimal ICC, and flexible packaging for space-sensitive applications.
FAQ
What is the exact reset timeout duration for APX803L20-17W5-7?
The APX803L20-17W5-7 provides a nominal 220ms reset active timeout period after VCC recovers above the 2.0V threshold, with datasheet-specified min/max values of 143ms and 297ms across temperature and process variation. This delay is factory-programmed and does not require external timing components.
Can APX803L20-17W5-7 operate with a 1.8V supply rail?
Yes - the device operates over VCC = 0.9V to 5.5V, so it functions reliably at 1.8V. However, the 2.0V detection threshold means it will assert RESET whenever VCC falls below 2.0V, making it unsuitable for monitoring 1.8V rails directly; it is intended for supervising ≥2.0V supplies.
Is an external pull-up resistor required on the RESET pin?
Yes - the RESET pin is open-drain and active-low, so an external pull-up resistor (typically 10kΩ to VCC or host logic rail) is mandatory to establish a valid high state when not asserting reset. No internal pull-up is integrated.
Does APX803L20-17W5-7 meet automotive qualification standards?
No - APX803L20-17W5-7 is rated for industrial temperature range (-40°C to +85°C) and is not AEC-Q100 qualified. For automotive applications, Diodes Incorporated offers separate AEC-Q100–qualified variants (e.g., APX803L20Q-series) manufactured in IATF 16949 facilities.
APX803L20-17W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 143ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
APX803L20-17W5-7 FAQ
1.How can I place an order for APX803L20-17W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-17W5-7 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 APX803L20-17W5-7 reliable?
The price and inventory of APX803L20-17W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-17W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-17W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-17W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-17W5-7?
APX803L20-17W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-17W5-7 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 APX803L20-17W5-7?
For technical support, including APX803L20-17W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-17W5-7 requirements.
6.How does Aetrix verify that APX803L20-17W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-17W5-7 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 APX803L20-17W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-17W5-7?
All APX803L20-17W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-17W5-7, 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 APX803L20-17W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-17W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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