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Diodes Incorporated APX803L05-14SA-7
- Part No.:
- APX803L05-14SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-14SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,630
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Product details
Overview
APX803L05-14SA-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 features open-drain active-low RESET output and operates across –40°C to +85°C ambient range in battery-powered IoT sensors and portable medical devices.
For engineers reviewing the APX803L05-14SA-7 datasheet, APX803L05-14SA-7 pinout, APX803L05-14SA-7 application, or APX803L05-14SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current impact on system battery life, and SOT23 package compatibility with high-density PCB layouts.
Technical Context
The APX803L05-14SA-7 implements a precision bandgap-based voltage reference and comparator architecture to monitor VCC against a fixed 5.0V detection threshold. Its internal hysteresis (0.01×VTH) prevents oscillation during slow-rising or noisy supply transitions.
Reset assertion occurs within 20µs of VCC falling below 5.0V, and release requires VCC to exceed 5.0V by ≥0.01×VTH. The 55ms timeout is factory-programmed and stable across –40°C to +85°C, with <±10% variation over full temperature range per datasheet Figure 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 5.0V ±1.5% - ensures reliable µP reset initiation at nominal rail voltage without false triggering |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell–powered wearables and remote sensors |
| Reset Timeout | 55ms - provides sufficient hold time for complete µP initialization and peripheral stabilization |
| Response Time | 20µs - guarantees fast fault capture before digital logic corruption occurs |
| Output Type | Open-drain, active-low - supports wired-OR reset bus architectures and flexible pull-up voltage selection |
| Operating Temp | –40°C to +85°C - validated for industrial-grade embedded control and automotive cabin electronics |
| Hysteresis | 0.01×VTH (50mV) - eliminates chatter during brown-out recovery with minimal voltage margin overhead |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 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 bias and output sink current; must be connected to system power ground plane |
| 2 (VCC) | Supply Input | Monitored voltage rail input; valid from 0.9V to 5.5V; powers internal reference and comparator |
| 3 (RESET) | Open-Drain Output | Active-low reset signal; requires external pull-up; sinks up to 20mA at 0.4V max VOL |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V Threshold | Factory-trimmed, no external resistor network required - reduces BOM count and layout area |
| 55ms Reset Timeout | Internally generated, temperature-stable delay - eliminates need for external RC timing components |
| ±1.5% Threshold Accuracy | Guaranteed at +25°C; supports tight-margin power rails in modern low-voltage µPs (e.g., ARM Cortex-M0+) |
| 1µA Supply Current | Enables always-on supervision in energy-harvesting nodes where average current budget is sub-µA |
| Open-Drain Output | Allows direct connection to shared reset bus with multiple supervisors or µP reset inputs |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor with CR2032 battery and ultra-low-power BLE SoC. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output to assert reset if voltage sags below 5.0V due to battery aging or load transients. Use Value: Prevents firmware lockup during critical measurement cycles by ensuring clean µP restart before ADC sampling begins. |
Use Scenario: DIN-rail mounted analog input module operating in factory environments with 24VDC field power. IC Role / Device Role / Timing Role: Supervises isolated 5V logic rail derived from DC/DC converter; holds µC in reset until rail stabilizes post-power-up. Use Value: Eliminates spurious I/O state changes during power ramp by enforcing minimum 55ms reset assertion window. |
| Smart Home Hub Controllers | Automotive Infotainment Subsystems |
Use Scenario: Wi-Fi–enabled home automation hub powered by USB-C PD with variable 5V/9V input. IC Role / Device Role / Timing Role: Detects 5.0V system rail collapse during USB negotiation glitches or cable disconnect events. Use Value: Triggers controlled reboot instead of undefined behavior, preserving Zigbee/Z-Wave mesh network state integrity. |
Use Scenario: Display cluster MCU supplied via secondary 5V buck regulator from 12V vehicle battery. IC Role / Device Role / Timing Role: Provides cold-cranking tolerant reset signaling during engine start (battery dip to 6V). Use Value: Ensures display firmware initializes only after 5V rail settles above 5.0V with 55ms debounce, avoiding graphical artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E50DBZR | 5.0V threshold, ±2.5% accuracy, 350ns response, 200ms default delay | Higher accuracy tolerance and faster response but longer fixed delay limits use in fast-boot systems | Select when tighter timing control is needed and 200ms reset hold is acceptable for host processor requirements |
| MAX809SEUR+T | 5.0V threshold, ±2.5% accuracy, 1.6µA supply current, 240ms delay | Higher quiescent current and non-adjustable long delay reduce suitability for battery lifetime–critical designs | Prefer for legacy designs already qualified with Maxim's footprint and timing profile |
Compared with TLV803E50DBZR and MAX809SEUR+T, the APX803L05-14SA-7 delivers superior battery efficiency (1µA vs. ≥1.6µA), tighter threshold accuracy (±1.5% vs. ±2.5%), and a shorter, more widely adopted 55ms delay ideal for modern low-power µP boot sequences.
Availability
APX803L05-14SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart home hub controllers requiring stable component supply with guaranteed long-term manufacturability.
Supply support for APX803L05-14SA-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 connectivity applications.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy power monitoring in space-constrained and battery-sensitive systems.
FAQ
What is the exact reset threshold voltage for APX803L05-14SA-7?
The APX803L05-14SA-7 has a factory-set detection threshold of 5.0V with guaranteed accuracy of ±1.5% over temperature (–40°C to +85°C). This means the actual trip point falls between 4.925V and 5.075V at +25°C, and remains within ±1.5% across the full operating range per DS38171 Rev. 3–2 Table 3.
Can APX803L05-14SA-7 drive a 10kΩ pull-up resistor to 3.3V?
Yes - the open-drain RESET output can sink ≥3.5mA at VOL ≤ 0.4V (per datasheet Table 4), supporting standard 10kΩ pull-ups to 3.3V (I = 330µA) with ample margin. The output remains fully compatible with 1.8V, 2.5V, 3.3V, and 5V logic families.
Is the 55ms reset timeout adjustable or fixed?
The 55ms timeout is factory-programmed and permanently fixed for the APX803L05-14SA-7 variant. It cannot be modified externally or via configuration pins. Other variants (e.g., APX803L05-26SA-7) offer 220ms or 450ms delays, but no user-selectable timing options exist within this device family.
Does APX803L05-14SA-7 require an external bypass capacitor?
Yes - a 100nF ceramic capacitor between VCC and GND is recommended per the Typical Applications Circuit (DS38171 p.2). This stabilizes the internal reference and suppresses high-frequency noise that could cause false resets, especially in noisy switching power supply environments.
APX803L05-14SA-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:
- 1.4V
- 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
APX803L05-14SA-7 FAQ
1.How can I place an order for APX803L05-14SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-14SA-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 APX803L05-14SA-7 reliable?
The price and inventory of APX803L05-14SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-14SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-14SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-14SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-14SA-7?
APX803L05-14SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-14SA-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 APX803L05-14SA-7?
For technical support, including APX803L05-14SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-14SA-7 requirements.
6.How does Aetrix verify that APX803L05-14SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-14SA-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 APX803L05-14SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-14SA-7?
All APX803L05-14SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-14SA-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 APX803L05-14SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-14SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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