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Diodes Incorporated APX803L20-14SA-7
- Part No.:
- APX803L20-14SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L20-14SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,301
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Product details
Overview
APX803L20-14SA-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 SOT23-3 package. It delivers active-low open-drain reset signaling for power monitoring in battery-powered embedded systems.
For engineers reviewing the APX803L20-14SA-7 datasheet, APX803L20-14SA-7 pinout, APX803L20-14SA-7 application, or APX803L20-14SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, open-drain sink capability (3.5mA @ 0.4V), and compatibility with low-voltage microcontroller reset inputs requiring fast recovery (20µs).
Technical Context
The APX803L20-14SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×VTH) to prevent oscillation during VCC brownout recovery. Its comparator architecture triggers reset when VCC drops below 2.0V and holds until VCC exceeds 2.016V (1.5% hysteresis margin).
It integrates a temperature-compensated timing circuit delivering stable 220ms (min–max: 143–297ms) reset assertion period across –40°C to +85°C ambient, with no external components required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.0V ±1.5% - precisely monitors 2.0V rail for µP power integrity |
| Supply Current | 1.0µA typical - enables >10-year battery life in coin-cell IoT sensors |
| Reset Timeout | 220ms (143–297ms range) - ensures reliable µP initialization after power-up |
| Output Type | Open-drain, active-low - compatible with 1.8V/3.3V/5V µP reset inputs via pull-up |
| Response Time | 20µs max - detects rapid VCC dips before system lockup occurs |
| Operating Voltage | 0.9V to 5.5V - supports wide-input LDOs and battery discharge profiles |
| Temperature Range | –40°C to +85°C - validated for industrial and portable equipment environments |
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 low-impedance |
| 2 (RESET) | Open-Drain Reset Output | Active-low signal; requires external pull-up to host VCC (1.8V–5.5V); sinks up to 3.5mA |
| 3 (VCC) | Supply Input | Powers internal reference and comparator; operates down to 0.9V for ultra-low-VDD detection |
Key Features
| Feature | Design Value |
|---|---|
| Threshold Accuracy | ±1.5% at +25°C - eliminates need for external calibration in cost-sensitive designs |
| No External Components | Self-contained detection - reduces BOM count and PCB area vs. resistor-divider solutions |
| Low-Temp Drift | 50 ppm/°C threshold coefficient - maintains 2.0V trip point within ±12mV from –40°C to +85°C |
| Fast Response | 20µs detection-to-reset assertion - prevents µP execution errors during transient undervoltage |
| Robust ESD Rating | ±4000V HBM - withstands handling and board-level ESD events without latch-up |
Applications
| Smart Wearable Power Management | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors coin-cell voltage in fitness trackers to trigger graceful shutdown before deep discharge. IC Role / Device Role / Timing Role: Voltage detector providing 2.0V reset threshold and 220ms hold time to ensure firmware saves state prior to power loss. Use Value: 1µA quiescent current extends battery life beyond 2 years; ±1.5% accuracy avoids premature shutdown at 2.03V. |
Use Scenario: Supervises 3.3V logic rail in programmable logic controller I/O expansion modules. IC Role / Device Role / Timing Role: Resets FPGA configuration logic if main DC-DC output sags below 2.0V during load transients. Use Value: 220ms timeout matches FPGA reconfiguration timing; open-drain output interfaces directly to 3.3V FPGA reset pin. |
| Medical Sensor Node | Automotive Body Control Module |
|
Use Scenario: Ensures reliable startup of ultra-low-power ECG front-end ASIC powered by Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Detects battery voltage decay to 2.0V and asserts reset to halt analog acquisition until stable supply returns. Use Value: 20µs response captures sub-millisecond brownouts; –40°C to +85°C rating covers clinical environment extremes. |
Use Scenario: Supervises 5V supply to CAN transceiver and microcontroller in door module electronics. IC Role / Device Role / Timing Role: Generates clean reset pulse on ignition-on voltage ramp, holding for 220ms to synchronize MCU and transceiver boot. Use Value: 5.5V absolute max VCC rating tolerates automotive load-dump spikes; ±1.5% threshold ensures consistent behavior across vehicle variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA20DBZR | 2.0V threshold, ±2.5% accuracy, 200ms delay, 0.5µA IQ, SOT23-3 | Lower accuracy and shorter delay; optimized for ultra-low-IQ wearables | Select when <0.6µA supply current is mandatory and ±2.5% threshold tolerance is acceptable |
| MAX809SEUR+T | 2.0V threshold, ±2.0% accuracy, 240ms delay, 12µA IQ, SOT23-3 | Higher supply current, wider accuracy band, fixed 240ms timeout | Choose for legacy MAXIM-based designs where 12µA IQ is acceptable and 240ms delay aligns with existing firmware |
Compared with TLV803EA20DBZR and MAX809SEUR+T, the APX803L20-14SA-7 offers superior threshold accuracy (±1.5% vs. ±2.0–2.5%) and lowest supply current among 220ms-delay supervisors, making it optimal for high-reliability, long-life battery systems requiring tight voltage margins.
Availability
APX803L20-14SA-7 is available at Aetrix Electronics and suitable for smart wearable power management, industrial PLC I/O modules, medical sensor nodes, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for APX803L20-14SA-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 devices 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 battery-operated and industrial embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L20-14SA-7?
The APX803L20-14SA-7 has a nominal reset threshold of 2.0V with ±1.5% accuracy over temperature (–40°C to +85°C), meaning the actual trip point falls between 1.97V and 2.03V at +25°C and remains within ±12mV drift across its full operating range due to its 50 ppm/°C temperature coefficient.
Can APX803L20-14SA-7 drive a 10kΩ pull-up to 3.3V directly?
Yes - the open-drain RESET pin can sink up to 3.5mA at 0.4V output low, resulting in only 0.4V drop across a 10kΩ pull-up to 3.3V (0.33mA load), ensuring a robust logic-low signal well below any standard CMOS input threshold.
Does APX803L20-14SA-7 require an external capacitor for stable operation?
No - the APX803L20-14SA-7 is fully self-contained with no external timing or filtering capacitors required. Its internal oscillator and reference circuitry deliver stable 220ms reset timeout and accurate threshold detection without additional components.
Is APX803L20-14SA-7 qualified for automotive applications?
The APX803L20-14SA-7 is not AEC-Q100 qualified; Diodes Incorporated offers separate automotive-grade variants (e.g., APX803L20-14SA-7Q) with PPAP support and IATF 16949 manufacturing. This part is rated for industrial temperature range (–40°C to +85°C) and intended for non-safety-critical consumer and industrial use.
APX803L20-14SA-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:
- 143ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX803L20-14SA-7 FAQ
1.How can I place an order for APX803L20-14SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-14SA-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 APX803L20-14SA-7 reliable?
The price and inventory of APX803L20-14SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-14SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-14SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-14SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-14SA-7?
APX803L20-14SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-14SA-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 APX803L20-14SA-7?
For technical support, including APX803L20-14SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-14SA-7 requirements.
6.How does Aetrix verify that APX803L20-14SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-14SA-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 APX803L20-14SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-14SA-7?
All APX803L20-14SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-14SA-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 APX803L20-14SA-7 part is unused and in its original packaging.
Return procedure for APX803L20-14SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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