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Diodes Incorporated APX803L-40W5-7
- Part No.:
- APX803L-40W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-40W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:4,832
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Product details
Overview
APX803L-40W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply levels in battery-powered and embedded digital systems. It features a fixed 4.0V detection threshold (±1.5% accuracy), 1µA typical supply current, 450ms reset timeout, open-drain active-low RESET output, and operates across –40°C to +85°C ambient range.
For engineers reviewing the APX803L-40W5-7 datasheet, APX803L-40W5-7 pinout, APX803L-40W5-7 application, or APX803L-40W5-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in Diodes' DS38171 Rev. 3–2 specification.
Technical Context
The APX803L-40W5-7 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 drops below 4.0V and holds it low until VCC exceeds 4.0V + hysteresis.
It integrates a factory-programmed 450ms recovery delay (tDELAY), supports 0.9V–5.5V operating supply, and delivers sub-20µs reset assertion latency. No external components are required - the device functions as a self-contained power-on reset (POR) and brown-out detection (BOD) solution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 4.0V ±1.5% - precisely monitors 4.0V rail integrity with minimal drift over temperature (50 ppm/°C). |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell or energy-harvesting systems without measurable battery drain. |
| Reset Timeout | 450ms (typ.) - ensures reliable processor initialization after power-up or brown-out recovery. |
| Output Type | Open-drain, active-low - allows wired-OR configuration and compatibility with 1.8V–5.5V logic interfaces. |
| Response Time | <20µs - guarantees fast fault detection before system state corruption occurs. |
| Operating Range | –40°C to +85°C - qualified for industrial and portable equipment environments. |
| Hysteresis | 0.01×VTH (≈40mV) - prevents chatter during slow-rising/falling VCC transitions. |
Pinout & Package
SOT25 (5-pin) package with two NC pins; compact footprint ideal for space-constrained PCB layouts while maintaining thermal robustness (θJA = 200°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and RESET sink path. |
| 2 | RESET | Open-drain output; pulled low during VCC undervoltage condition; requires external pull-up. |
| 3 | VCC | Power input pin; supplies internal reference and comparator; accepts 0.9V–5.5V. |
| 4 | NC | No connection - electrically isolated; must remain unconnected per design. |
| 5 | NC | No connection - electrically isolated; must remain unconnected per design. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - eliminates need for power gating in always-on monitoring nodes. |
| Factory-set 450ms delay | Guaranteed tDELAY = 292–608ms over temperature - eliminates external RC timing component. |
| High threshold accuracy | ±1.5% at +25°C - reduces margining overhead in tight-voltage-margin designs (e.g., 4.0V Li-ion systems). |
| Robust ESD protection | ±4000V HBM - withstands handling and board-level electrostatic events without latch-up. |
| Lead-free & green compliance | RoHS 3 / halogen- and antimony-free - meets global environmental and automotive supply chain requirements. |
Applications
| Smartphone Power Sequencing | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors main 4.0V PMIC output during cold start and battery voltage sag. IC Role / Device Role / Timing Role: Voltage supervisor providing POR and brown-out reset to application processor and baseband SoC. Use Value: Ensures deterministic boot sequence by holding RESET low for ≥450ms until stable 4.0V rail is confirmed. |
Use Scenario: Supervises 4.0V fieldbus interface power in programmable logic controller backplane. IC Role / Device Role / Timing Role: Fault-detecting reset generator that isolates corrupted I/O states during transient dips. Use Value: Prevents spurious command execution by asserting RESET within 20µs of VCC falling below 4.0V. |
| Portable Medical Sensor Hub | Automotive Body Control Module (BCM) |
|
Use Scenario: Validates 4.0V sensor analog front-end supply before enabling ADC sampling. IC Role / Device Role / Timing Role: Precision threshold detector with hysteresis to reject noise-induced false resets. Use Value: Delivers 40mV hysteresis (0.01×4.0V) to suppress chatter during slow battery discharge profiles. |
Use Scenario: Supervises 4.0V microcontroller core rail in non-safety-critical BCM subsystems. IC Role / Device Role / Timing Role: Reset source compliant with AEC-Q100 Class 2 temperature requirements (–40°C to +105°C junction). Use Value: Supports automotive qualification via Diodes' IATF 16949 manufacturing and PPAP-capable change control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E40DBZR | 4.0V threshold, 350ms delay, SOT23-3 package, 0.5µA supply current | Lacks NC pins; smaller footprint but no thermal margin advantage in high-density layouts | Select when board space is critical and 350ms delay suffices; verify layout clearance for open-drain drive strength. |
| MAX809SEUR+T | 4.0V threshold, 240ms delay, SOT23-3, 10µA supply current, higher VCC min (1.0V) | Higher ICC increases battery load; shorter delay may not meet processor reset hold-time specs | Prefer only in legacy designs where MAX809 footprint compatibility is mandatory; avoid in ultra-low-power systems. |
Compared with TLV803E40DBZR and MAX809SEUR+T, the APX803L-40W5-7 offers the longest factory-programmed delay (450ms), lowest ICC (1µA), and SOT25's dual NC pins for enhanced layout flexibility - making it optimal for new designs prioritizing reliability, longevity, and thermal headroom.
Availability
APX803L-40W5-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, industrial PLC I/O modules, portable medical sensor hubs, and automotive body control modules requiring stable component supply across extended production lifecycles.
Supply support for APX803L-40W5-7 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' µP supervisory product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-operated and industrial embedded systems - emphasizing long-term stability, minimal BOM count, and RoHS/green compliance.
FAQ
What is the exact reset timeout for APX803L-40W5-7?
The APX803L-40W5-7 has a factory-programmed reset active timeout period of 450ms (typical), with guaranteed minimum/maximum values of 292ms and 608ms across –40°C to +85°C ambient temperature, as specified in DS38171 Rev. 3–2 Table 3.
Can APX803L-40W5-7 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 test condition), supporting standard 10kΩ pull-ups to 3.3V (I = 0.33mA) with ample margin and <0.033V voltage drop.
Is APX803L-40W5-7 qualified for automotive use?
While APX803L-40W5-7 itself is not AEC-Q100 certified, Diodes offers automotive-grade variants (e.g., APX803L-40W5-7Q) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening; contact Diodes or Aetrix for qualified part numbers.
Does the SOT25 package require special PCB layout considerations?
Yes - pins 4 and 5 are NC and must remain unconnected; thermal pad is not present, so standard SOT25 reflow profile applies; ensure ≥0.2mm solder mask dam between pins 3 (VCC) and 4 (NC) to prevent bridging during assembly.
APX803L-40W5-7 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:
- 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-40W5-7 FAQ
1.How can I place an order for APX803L-40W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-40W5-7 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-40W5-7 reliable?
The price and inventory of APX803L-40W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-40W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-40W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-40W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-40W5-7?
APX803L-40W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-40W5-7 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-40W5-7?
For technical support, including APX803L-40W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-40W5-7 requirements.
6.How does Aetrix verify that APX803L-40W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-40W5-7 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-40W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-40W5-7?
All APX803L-40W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-40W5-7, 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-40W5-7 part is unused and in its original packaging.
Return procedure for APX803L-40W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L-40W5-7 Tags
-
MIC826SYMT-TR
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APX803S-31SA-7
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