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Diodes Incorporated APX803L-23W5-7
- Part No.:
- APX803L-23W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-23W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,478
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Product details
Overview
APX803L-23W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply levels in embedded digital systems. It features a fixed 2.3V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 220ms reset timeout. Used in battery-powered instrumentation and portable controllers requiring low-burden power monitoring.
For engineers reviewing the APX803L-23W5-7 datasheet, APX803L-23W5-7 pinout, APX803L-23W5-7 application, or APX803L-23W5-7 equivalent, this page delivers verified electrical parameters, SOT25 package mapping, timing behavior under voltage droop, and real-world µP reset coordination requirements.
Technical Context
The APX803L-23W5-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator triggers an open-drain RESET signal when VCC falls below 2.3V and holds it low until VCC exceeds 2.3V + hysteresis.
It integrates a factory-programmed 220ms recovery delay (APX803L20 variant), operates from 0.9V to 5.5V supply, and delivers sub-20µs response time from VCC drop to RESET assertion-enabling reliable brown-out protection in low-voltage microcontroller systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.3V ±1.5% - precise brown-out point for 2.5V/3.3V logic rails |
| Supply Current | 1.0µA typical - negligible load on coin-cell or energy-harvesting supplies |
| Reset Timeout | 220ms - ensures stable power-up before µP release, per JEDEC JESD78 |
| Response Time | 20µs max - fast assertion prevents µP corruption during transient dips |
| Output Type | Open-drain, active-low - supports wired-OR reset buses and flexible pull-up selection |
| Operating Voltage | 0.9V to 5.5V - functional down to near-dead battery voltage |
| Temp Range | -40°C to +85°C - validated for industrial ambient operation |
Pinout & Package
SOT25 (5-pin) package with NC pins; compact 2.9mm × 2.8mm footprint, 1.45mm height, and exposed pad for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return for internal comparator and output stage |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up to host VCC rail |
| 3 | VCC | Power input; supplies internal reference, comparator, and output driver |
| 4, 5 | NC | No connection; electrically isolated, must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.3V threshold | Eliminates external resistor divider, reducing BOM count and layout area |
| 220ms factory-set delay | Guarantees sufficient hold time for flash programming and PLL lock on power-up |
| 1µA supply current | Enables >10-year battery life in always-on sensor nodes with periodic wake-up |
| ±1.5% threshold accuracy | Meets tight reset window requirements for 3.3V I/O domains without margin loss |
| Open-drain output | Allows multi-source reset arbitration and compatibility with 1.8V–5V host logic |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch operating from CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 3.0V LDO output; asserts RESET if voltage sags below 2.3V during RF burst, preventing memory corruption. Use Value: 1µA quiescent current extends battery life beyond 36 months; 220ms timeout avoids spurious resets from switching noise. | Use Scenario: DIN-rail mounted analog input module powered by 24VDC-to-3.3V isolated converter. IC Role / Device Role / Timing Role: Supervises 3.3V µP rail; holds RESET active during cold-start until DC/DC stabilizes and FPGA config completes. Use Value: ±1.5% threshold ensures deterministic release at ≥2.33V, compatible with 3.3V ±5% supply tolerance. |
| Smart Home Hub Controllers | Automotive Body Control Units |
Use Scenario: Wi-Fi-enabled thermostat with dual power sources (USB + backup Li-ion). IC Role / Device Role / Timing Role: Detects brown-out on primary 3.3V rail and forces controlled shutdown via µP interrupt before EEPROM write corruption. Use Value: 20µs response time captures sub-cycle dips from shared power rail coupling; open-drain output interfaces directly to µP NMI pin. | Use Scenario: Door module with LIN transceiver and local MCU, powered from vehicle battery (9–16V). IC Role / Device Role / Timing Role: Monitors post-regulator 3.3V rail; asserts RESET during cranking-induced 6V dips to halt CAN message transmission. Use Value: -40°C to +85°C rating covers under-hood temperature extremes; 0.9V min operating voltage ensures function during deep battery sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E23DBVR | 2.3V threshold, 200ms delay, 0.5µA IQ, SOT-23-3 | 3-pin package lacks NC pins; no SOT25 option; lower IQ but no 220ms bin | Select for ultra-low-power designs where 200ms vs. 220ms delay is acceptable and board space is constrained |
| MAX809SEUR+T | 2.3V threshold, 140ms delay, 10µA IQ, SOT-23-3 | Higher supply current; shorter delay; not qualified for extended temp range | Select only for cost-sensitive commercial-grade applications where 85°C max ambient suffices |
Compared with TLV803E23DBVR and MAX809SEUR+T, the APX803L-23W5-7 uniquely combines SOT25 packaging for improved thermal performance, exact 220ms timeout alignment with JEDEC startup specs, and industrial-grade temperature support-all at 1µA IQ.
Availability
APX803L-23W5-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and automotive body control units requiring stable component supply across long production lifecycles.
Supply support for APX803L-23W5-7 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, with design centers across Asia, Europe, and the US.
The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for low-power, high-accuracy reset generation in battery-operated and industrial embedded systems.
FAQ
What is the exact reset threshold voltage and its tolerance for APX803L-23W5-7?
The APX803L-23W5-7 has a nominal reset threshold of 2.3V with a guaranteed accuracy of ±1.5% over -40°C to +85°C ambient temperature. This corresponds to a minimum threshold of 2.265V and maximum of 2.335V at +25°C, and includes temperature coefficient drift of ≤50 ppm/°C across full operating range.
Does APX803L-23W5-7 require external components to operate?
No external components are required. The device integrates a precision voltage reference, comparator, and delay timer. Only an external pull-up resistor on the RESET pin is needed for proper logic-level translation-typically 10kΩ to the host VCC rail-and a 100nF bypass capacitor on VCC is recommended for noise immunity.
Can APX803L-23W5-7 be used in automotive applications?
The APX803L-23W5-7 is not AEC-Q100 qualified and is specified for industrial temperature range (-40°C to +85°C). While it functions reliably in benign automotive environments (e.g., infotainment head units), Diodes recommends contacting their automotive team for AEC-Q100-compliant alternatives like the APX809 series for under-hood or safety-critical ECUs.
How does the 220ms reset timeout behave during temperature variation?
The 220ms timeout (APX803L20 variant) varies by ±10% over -40°C to +85°C, remaining within 198–242ms. This stability is confirmed in Figure 5 of DS38171 Rev. 3-2, showing monotonic increase with temperature and no discontinuities-ensuring predictable µP release timing across environmental stress.
APX803L-23W5-7 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:
- 2.3V
- 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-23W5-7 FAQ
1.How can I place an order for APX803L-23W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-23W5-7 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-23W5-7 reliable?
The price and inventory of APX803L-23W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-23W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-23W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-23W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-23W5-7?
APX803L-23W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-23W5-7 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-23W5-7?
For technical support, including APX803L-23W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-23W5-7 requirements.
6.How does Aetrix verify that APX803L-23W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-23W5-7 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-23W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-23W5-7?
All APX803L-23W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-23W5-7, 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-23W5-7 part is unused and in its original packaging.
Return procedure for APX803L-23W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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