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Diodes Incorporated APX803L-14W5-7
- Part No.:
- APX803L-14W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-14W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,183
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Product details
Overview
APX803L-14W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.4V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 220ms reset timeout in SOT25 package-used to monitor power integrity in battery-powered IoT sensors and portable medical devices.
For engineers reviewing the APX803L-14W5-7 datasheet, APX803L-14W5-7 pinout, APX803L-14W5-7 application, or APX803L-14W5-7 equivalent, key selection criteria include threshold voltage tolerance, open-drain active-low reset timing, low-quiescent-current operation under 1.5V supply, and compatibility with space-constrained SOT25 PCB layouts.
Technical Context
The APX803L-14W5-7 implements a fixed-threshold, hysteresis-enabled voltage monitoring circuit with internal 1.4V reference derived from bandgap architecture. Its reset assertion logic triggers when VCC drops below 1.4V and sustains the active-low open-drain output until VCC exceeds 1.4V + 0.014V (1% hysteresis), ensuring noise immunity during brown-out recovery.
It integrates factory-programmed 220ms reset timeout (APX803L20 variant), eliminating external RC timing components. The device operates across -40°C to +85°C ambient, maintains 50 ppm/°C threshold temperature coefficient, and supports sink currents up to 20mA on the RESET pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.4V ±1.5% - precisely monitors 1.4V rail for microcontroller core voltage stability |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell–powered wearables |
| Reset Timeout | 220ms - ensures reliable processor initialization after power-up or brown-out |
| Output Type | Open-drain, active-low - allows wired-OR reset bus sharing and flexible pull-up voltage selection |
| Operating Voltage | 0.9V to 5.5V - supports direct connection to 1.2V, 1.8V, 3.3V, and 5V system rails |
| Hysteresis | 0.01 × VTH (14mV) - prevents oscillatory reset toggling near threshold during slow-rising VCC |
| Response Time | 20µs - guarantees fast fault detection before digital logic corruption occurs |
Pinout & Package
SOT25 (5-pin) package with 1.6mm × 2.9mm footprint and 0.95mm height; pin 1 = VCC, pin 2 = RESET (open-drain), pin 3 = GND, pins 4–5 = NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Power input pin; must be decoupled with ≥100nF capacitor to suppress supply noise |
| 2 | RESET | Active-low open-drain output; requires external pull-up resistor to host logic rail |
| 3 | GND | Analog ground reference; must connect to low-impedance system ground plane |
| 4, 5 | NC | No internal connection; left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - reduces standby power loss in always-on edge nodes |
| Factory-set threshold | 1.4V with 0.1V step granularity - eliminates external resistor network calibration |
| Built-in reset delay | 220ms fixed timeout - replaces discrete RC timing circuit, saving BOM cost and board area |
| High-accuracy hysteresis | 14mV (1% of 1.4V) - prevents false resets during noisy or slowly recovering power rails |
| Lead-free & green compliance | RoHS 3 / halogen-free / antimony-free - meets global environmental compliance for medical and consumer end equipment |
Applications
| Portable ECG Monitor | Smart Home Sensor Hub |
|---|---|
Use Scenario: Continuous 24/7 operation powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 1.4V LDO output feeding MCU core; asserts reset if battery sags below safe operating voltage. Use Value: Prevents firmware crash due to undervoltage-induced memory corruption, extending field reliability beyond 3 years. |
Use Scenario: Multi-sensor aggregation node (temp/humidity/motion) with sleep-wake cycling. IC Role / Device Role / Timing Role: Provides 220ms power-on reset hold time to ensure stable clock initialization before sensor driver load. Use Value: Eliminates boot failures caused by premature peripheral access during unstable VCC ramp-up. |
| Industrial PLC I/O Module | Wireless Medical Patch |
Use Scenario: DIN-rail mounted controller with wide-input DC-DC converter feeding 1.4V FPGA configuration rail. IC Role / Device Role / Timing Role: Detects 1.4V rail collapse during transient overload; holds FPGA in reset until full recovery. Use Value: Avoids partial configuration lockup that would require manual power cycle in inaccessible installations. |
Use Scenario: Disposable wearable patch with 1.5V primary cell powering ultra-low-power SoC. IC Role / Device Role / Timing Role: Supervises 1.4V regulated supply to analog front-end and BLE radio subsystem. Use Value: Guarantees clean reset at end-of-life voltage drop, enabling graceful shutdown and data preservation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G14DBVR | 1.4V threshold, 350ms default delay, 1.6µA supply current, SOT23-6 package | Requires external capacitor for delay adjustment; larger footprint than SOT25 | Select when programmable delay or higher sink current (50mA) is required |
| MAX809SEUR+T | 1.4V threshold, 240ms delay, 10µA supply current, SOT23-3 package | No NC pins; lacks hysteresis specification (±2.5% threshold accuracy) | Select only for cost-sensitive, non-critical applications where 10× higher ICC is acceptable |
Compared with TPS3808G14DBVR and MAX809SEUR+T, the APX803L-14W5-7 delivers superior power efficiency (1µA vs. 1.6–10µA), tighter threshold accuracy (±1.5% vs. ±2–3%), and smaller SOT25 footprint with dedicated NC pins for improved layout routing-making it optimal for compact, long-life battery systems.
Availability
APX803L-14W5-7 is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, and industrial control modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for APX803L-14W5-7 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 in Asia, Europe, and the U.S., and manufacturing in IATF 16949–certified facilities.
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-harvesting systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L-14W5-7?
The APX803L-14W5-7 has a nominal reset threshold of 1.4V with ±1.5% accuracy over temperature (–40°C to +85°C), verified per DS38171 Rev. 3–2 Table 3. This corresponds to a guaranteed range of 1.379V to 1.421V at +25°C, tightening to ±1.8% over full operating range.
Can APX803L-14W5-7 operate with a 1.2V supply rail?
Yes - the device supports VCC down to 0.9V per Recommended Operating Conditions, enabling use with 1.2V LDO outputs. However, RESET output low voltage (VOL) rises to ≤0.4V only when sinking ≤3.5mA at VCC = VTH – 0.2V; full 20mA sink capability requires VCC ≥1.5V.
Is the 220ms reset timeout adjustable or fixed?
The 220ms timeout is factory-programmed and fixed - no external components or configuration pins modify it. This is confirmed by ordering code "20" in APX803L20-14W5-7 and electrical characteristic table tDELAY values (143/220/297ms min/typ/max) for APX803L20 variants.
Are pins 4 and 5 on the SOT25 package required to be grounded?
No - pins 4 and 5 are explicitly designated NC (no connection) in the Pin Descriptions table and Functional Block Diagram. Diodes recommends leaving them unconnected; grounding is permissible but provides no functional benefit and may increase parasitic capacitance.
APX803L-14W5-7 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:
- 1.4V
- 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-14W5-7 FAQ
1.How can I place an order for APX803L-14W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-14W5-7 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-14W5-7 reliable?
The price and inventory of APX803L-14W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-14W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-14W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-14W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-14W5-7?
APX803L-14W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-14W5-7 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-14W5-7?
For technical support, including APX803L-14W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-14W5-7 requirements.
6.How does Aetrix verify that APX803L-14W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-14W5-7 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-14W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-14W5-7?
All APX803L-14W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-14W5-7, 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-14W5-7 part is unused and in its original packaging.
Return procedure for APX803L-14W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L-14W5-7 Tags
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MIC826SYMT-TR
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