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Diodes Incorporated APX803L05-17SA-7
- Part No.:
- APX803L05-17SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-17SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,539
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Product details
Overview
APX803L05-17SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply rails in battery-powered and embedded digital systems. It features a fixed 1.7V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 55ms reset timeout delay. Used in portable instrumentation and low-power microcontroller power-up sequencing.
For engineers reviewing the APX803L05-17SA-7 datasheet, APX803L05-17SA-7 pinout, APX803L05-17SA-7 application, or APX803L05-17SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay timing stability over temperature, open-drain sink capability (3.5mA @ 0.4V), and SOT23-3 package compatibility with space-constrained PCB layouts.
Technical Context
The APX803L05-17SA-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator triggers an active-low open-drain RESET signal when VCC drops below 1.7V and holds it until VCC exceeds 1.7V + hysteresis.
Reset assertion occurs within 20µs of VCC falling below threshold; recovery delay is factory-fixed at 55ms (typ.) and stable across -40°C to +85°C ambient. No external components are required-only a 100nF bypass capacitor on VCC is recommended per typical application circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 1.7V ±1.5% - precise brown-out detection for 1.8V logic rails |
| Supply Current | 1.0µA (typ.), 2.5µA (max) - enables multi-year battery life in always-on monitoring |
| Reset Delay | 55ms (typ.) - ensures reliable µP initialization after power stabilization |
| Output Type | Open-drain, active-low - supports wired-OR reset buses and flexible pull-up voltage selection |
| Response Time | 20µs - fast fault capture prevents system lockup during transient dips |
| Operating Voltage | 0.9V to 5.5V - compatible with Li-ion, coin-cell, and 3.3V/5V system rails |
| Temperature Range | -40°C to +85°C - qualified for industrial and portable equipment environments |
Pinout & Package
SOT23-3 package (3-pin, 1.3mm × 2.9mm, 0.95mm height), RoHS-compliant, lead-free, halogen-free "Green" construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Return path for internal circuitry and reset output sink current |
| 2 (RESET) | Open-Drain Output | Active-low reset signal; requires external pull-up; sinks up to 3.5mA |
| 3 (VCC) | Supply Input | Power rail monitored; also powers internal detector circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - eliminates measurable impact on battery drain in sleep modes |
| Factory-trimmed threshold | 1.7V ±1.5% - eliminates need for external resistor dividers or calibration |
| Integrated hysteresis | 0.01×VTH - prevents chatter during slow-rising/falling VCC transitions |
| Fixed 55ms timeout | Guaranteed minimum hold time - meets JEDEC JESD78 latch-up immunity requirements |
| No external components | Self-contained operation - reduces BOM count and layout area vs. discrete solutions |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Monitors 3.0V regulated rail; asserts RESET if voltage sags below 1.7V due to battery aging or load surge. Use Value: Prevents corrupted sensor data writes during undervoltage by holding µC in reset until stable power resumes. | Use Scenario: DIN-rail mounted remote I/O node operating in factory ambient (-25°C to +70°C). IC Role / Device Role / Timing Role: Supervises 24V-to-3.3V DC-DC output; provides 55ms reset pulse to ensure clean FPGA configuration after cold start. Use Value: Eliminates boot failures caused by marginal input ripple or slow DC-DC startup transients. |
| Smart Home Hub Controllers | Asset Tracking Beacons |
Use Scenario: Wi-Fi-enabled home automation hub using dual-supply (3.3V core, 1.8V I/O) architecture. IC Role / Device Role / Timing Role: Detects 1.8V I/O rail collapse; generates synchronized reset to both µC and RF transceiver. Use Value: Ensures deterministic state recovery across mixed-voltage subsystems without software intervention. | Use Scenario: GPS-enabled logistics tag powered by 3.7V Li-Po with aggressive duty-cycling (10s active / 5min sleep). IC Role / Device Role / Timing Role: Watches battery voltage during wake-up; triggers hard reset if cell drops below 3.2V cutoff. Use Value: Avoids firmware crashes from marginal supply during GPS acquisition bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E17DBVR | Same 1.7V threshold, but 350ms default delay (not 55ms); 0.5µA supply current | Longer reset hold time may delay system boot unnecessarily in fast-recovery designs | Select only if extended reset duration improves reliability in high-noise environments |
| MAX809SEUR+T | 1.68V threshold (±2.5%), 140ms delay, 10µA supply current, SOT23-3 | Higher current draw and looser accuracy reduce battery life and precision in tight-margin systems | Prefer for legacy designs where MAX809 footprint compatibility is mandatory |
Compared with TLV803E17DBVR and MAX809SEUR+T, the APX803L05-17SA-7 delivers optimal balance of ultra-low power (1µA), tight threshold accuracy (±1.5%), and application-matched 55ms delay-making it superior for modern energy-sensitive embedded systems requiring rapid, deterministic reset behavior.
Availability
APX803L05-17SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for APX803L05-17SA-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 protection 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 space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L05-17SA-7?
The APX803L05-17SA-7 has a factory-set detection threshold of 1.7V with a guaranteed accuracy of ±1.5% over -40°C to +85°C ambient temperature. This corresponds to a min/max range of 1.6745V to 1.7255V at +25°C, and the datasheet confirms ±1.5% applies across full operating temperature.
Can APX803L05-17SA-7 drive a 10kΩ pull-up resistor to 3.3V reliably?
Yes. With VOL ≤0.4V at ISINK = 3.5mA, the device can easily sink >330µA into a 10kΩ pull-up to 3.3V (330µA < 3.5mA). Measured sink current exceeds 5mA at VDS = 0.5V per datasheet curves, confirming robust interface capability with standard logic-level pull-ups.
Is the 55ms reset timeout affected by temperature or supply voltage variation?
No. The 55ms delay is internally generated and specified as stable across -40°C to +85°C and 0.9V–5.5V VCC. Datasheet Figure 5 shows <±5% variation over temperature, and no VCC dependency is indicated in electrical characteristics-ensuring consistent reset timing regardless of environmental or rail conditions.
Does APX803L05-17SA-7 require an external bypass capacitor?
Yes-a 100nF ceramic capacitor between VCC and GND is recommended per the Typical Applications Circuit in the datasheet. This stabilizes the internal reference and prevents false resets caused by high-frequency noise or supply transients on the monitored rail.
APX803L05-17SA-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:
- 1.7V
- 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
APX803L05-17SA-7 FAQ
1.How can I place an order for APX803L05-17SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-17SA-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 APX803L05-17SA-7 reliable?
The price and inventory of APX803L05-17SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-17SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-17SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-17SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-17SA-7?
APX803L05-17SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-17SA-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 APX803L05-17SA-7?
For technical support, including APX803L05-17SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-17SA-7 requirements.
6.How does Aetrix verify that APX803L05-17SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-17SA-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 APX803L05-17SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-17SA-7?
All APX803L05-17SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-17SA-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 APX803L05-17SA-7 part is unused and in its original packaging.
Return procedure for APX803L05-17SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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