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Diodes Incorporated APX803L05-23SA-7
- Part No.:
- APX803L05-23SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-23SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,973
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Product details
Overview
APX803L05-23SA-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 5.0V detection threshold (±1.5% accuracy), 1µA typical supply current, 55ms reset timeout, open-drain active-low RESET output, and operates across –40°C to +85°C ambient range.
For engineers reviewing the APX803L05-23SA-7 datasheet, APX803L05-23SA-7 pinout, APX803L05-23SA-7 application, or APX803L05-23SA-7 equivalent, key selection criteria include threshold voltage precision, ultra-low quiescent current, reset delay timing consistency, open-drain drive capability, and SOT23 package compatibility with space-constrained PCB layouts.
Technical Context
The APX803L05-23SA-7 implements a precision bandgap-based voltage reference and comparator circuit to detect when VCC falls below 5.0V ±1.5%, triggering an active-low open-drain RESET signal. Its internal hysteresis (0.01×VTH) prevents oscillation during slow-rising/falling supply transitions.
It integrates a programmable reset timeout block delivering exactly 55ms (typ.) after VCC recovery above threshold, with no external components required. The device draws only 1µA (typ.) at VCC = VTH + 0.2V, enabling use in always-on monitoring paths without compromising system power budget.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 5.0V ±1.5% - ensures reliable µP reset initiation at nominal 5V rail with minimal false triggering due to tolerance drift. |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables continuous supervision in energy-critical applications like coin-cell IoT sensors. |
| Reset Timeout | 55ms (typ.) - provides sufficient hold time for microprocessor initialization and peripheral stabilization after power-up. |
| Output Type | Open-drain, active-low - allows wired-OR configuration with other reset sources and flexible pull-up voltage selection (up to 5.5V). |
| Response Time | 20µs (max.) - guarantees rapid assertion of RESET upon VCC drop below threshold, meeting tight µP brown-out response requirements. |
| Operating Temp | –40°C to +85°C - supports industrial-grade deployment in automotive infotainment, industrial controllers, and outdoor equipment. |
| Package | SOT23-3 - surface-mount footprint (2.9mm × 1.3mm) compatible with high-density PCB assembly and automated reflow processes. |
Pinout & Package
SOT23-3 package: 3-pin, small-outline transistor outline with gull-wing leads; JEDEC TO-236AB compliant; moisture sensitivity level (MSL) 1; RoHS and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected directly to system ground plane for noise immunity. |
| 2 | RESET | Open-drain output; sinks current when asserted low; requires external pull-up resistor to define logic-high voltage level. |
| 3 | VCC | Power input pin; supplies internal circuitry; accepts 0.9V to 5.5V; decoupling capacitor (100nF) recommended adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.0µA typical draw enables multi-year operation on primary lithium batteries in maintenance-free sensor nodes. |
| Fixed 5.0V threshold | Factory-trimmed internal reference eliminates need for external resistive divider, reducing BOM count and layout area. |
| 55ms reset timeout | Precisely calibrated internal timer ensures consistent reset pulse width across temperature and supply voltage variations. |
| Open-drain output | Supports mixed-voltage system integration (e.g., 3.3V µP with 5V I/O rail) via independent pull-up voltage selection. |
| No external components | Self-contained operation reduces design validation effort and improves long-term reliability by eliminating passive component failure modes. |
Applications
| Smartphone Power Sequencing | Industrial PLC Controller Monitoring |
|---|---|
|
Use Scenario: Monitors main 5V supply rail during cold start and brown-out events in smartphone baseband processors. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to halt CPU execution until stable 5V is confirmed. Use Value: Prevents corrupted firmware execution and memory writes during unstable power conditions using <1µA overhead. |
Use Scenario: Supervises 5V auxiliary power in programmable logic controller backplanes exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Provides temperature-stable 55ms reset pulse to ensure deterministic FPGA and I/O ASIC initialization. Use Value: Maintains ±1.5% threshold accuracy from –40°C to +85°C, eliminating recalibration needs in uncontrolled environments. |
| Portable Medical Glucometer | Automotive Body Control Module |
|
Use Scenario: Ensures reliable startup of ARM Cortex-M0+ MCU in single-use glucose meters powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Low-current (1µA) supervisor enabling >2-year shelf life while guaranteeing safe boot sequence. Use Value: Delivers 55ms reset hold time compatible with MCU internal clock stabilization, verified across 0.9–5.5V VCC range. |
Use Scenario: Monitors 5V domain powering CAN transceivers and LIN interface ICs in body electronics modules. IC Role / Device Role / Timing Role: Generates clean, glitch-free RESET signal synchronized to 5V rail recovery after load dump transients. Use Value: Open-drain output withstands 6.0V transient on RESET line per absolute max rating, enhancing system robustness. |
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, 350ms default timeout, 0.5µA IQ, SOT23-3 package | Longer reset timeout limits suitability for fast-boot µPs; lower IQ benefits ultra-low-power designs | Select when extended reset hold time is required and sub-1µA current is critical |
| MAX809SEUR+T | 5.0V threshold, 240ms timeout, 12µA IQ, SOT23-3 package | Higher supply current increases battery drain; wider timeout tolerance (±10%) vs. ±1.5% | Choose only if legacy MAX809 footprint compatibility is mandatory and power budget permits |
Compared with TLV803E50DBZR and MAX809SEUR+T, the APX803L05-23SA-7 delivers tighter threshold accuracy (±1.5% vs. ±2% and ±10%), optimal 55ms timing for modern µPs, and lowest supply current among SOT23-3 5V supervisors-making it ideal for compact, battery-sensitive designs requiring precise reset control.
Availability
APX803L05-23SA-7 is available at Aetrix Electronics and suitable for portable medical devices, industrial PLCs, automotive body electronics, and consumer IoT endpoints requiring stable component supply with guaranteed long-term manufacturability.
Supply support for APX803L05-23SA-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 ICs for power management, signal integrity, and protection applications.
The APX803L series belongs to Diodes' µP supervisory product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in space- and energy-constrained embedded systems.
FAQ
What is the exact reset timeout duration for APX803L05-23SA-7?
The APX803L05-23SA-7 provides a factory-set reset active timeout period of 55ms (typical), with guaranteed minimum 35ms and maximum 75ms across –40°C to +85°C operating temperature. This value is internally trimmed and does not require external timing components.
Can APX803L05-23SA-7 monitor voltages below 5.0V?
No. The "05" suffix denotes a fixed 5.0V detection threshold; it cannot be adjusted or reconfigured for lower voltages. For 3.3V or 2.5V monitoring, Diodes offers APX803L33-XXSA-7 or APX803L25-XXSA-7 variants with corresponding factory-trimmed thresholds.
Is a pull-up resistor required on the RESET pin?
Yes. The RESET pin is open-drain and requires an external pull-up resistor to a valid logic-high voltage (e.g., 3.3V or 5.0V). Typical values range from 10kΩ to 100kΩ; lower values improve noise immunity but increase static current draw during RESET assertion.
Does APX803L05-23SA-7 support AEC-Q100 qualification?
No. APX803L05-23SA-7 is not AEC-Q100 qualified. For automotive-grade voltage supervisors, Diodes offers the APX803LQ series (e.g., APX803LQ50-23SA-7), which undergoes full AEC-Q100 stress testing and is manufactured in IATF 16949-certified facilities.
APX803L05-23SA-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:
- 2.3V
- 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
APX803L05-23SA-7 FAQ
1.How can I place an order for APX803L05-23SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-23SA-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 APX803L05-23SA-7 reliable?
The price and inventory of APX803L05-23SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-23SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-23SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-23SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-23SA-7?
APX803L05-23SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-23SA-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 APX803L05-23SA-7?
For technical support, including APX803L05-23SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-23SA-7 requirements.
6.How does Aetrix verify that APX803L05-23SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-23SA-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 APX803L05-23SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-23SA-7?
All APX803L05-23SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-23SA-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 APX803L05-23SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-23SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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