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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Diodes Incorporated APX803L20-29W5-7

Name: APX803L20-29W5-7
Brand: Diodes Incorporated
SKU: APX803L20-29W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX803L20-29W5-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: APX803L20-29W5-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

APX803L20-29W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.9V threshold detection with ±1.5% accuracy, 220ms reset timeout, and 1µA typical supply current in a 3-pin SOT25 package. It delivers active-low open-drain reset signaling for power monitoring in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L20-29W5-7 datasheet, APX803L20-29W5-7 pinout, APX803L20-29W5-7 application, or APX803L20-29W5-7 equivalent, key selection criteria include fixed 2.9V detection level, 220ms recovery delay, SOT25 thermal resistance (200°C/W), open-drain output drive capability, and operation across –40°C to +85°C ambient range.

Technical Context

The APX803L20-29W5-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during VCC transitions near threshold. Its internal comparator triggers an active-low reset signal when VCC drops below 2.9V and holds it until VCC rises above 2.9V + hysteresis.

Reset assertion occurs within 20µs of VCC crossing the falling threshold, and the device sustains the reset state for exactly 220ms after VCC recovers-guaranteed across temperature (–40°C to +85°C) and supply voltage (0.9V to 5.5V).

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold Voltage	2.9V ±1.5% - ensures reliable µP reset initiation at defined supply rail margin
Reset Timeout Delay	220ms (typ.) - provides sufficient hold time for full system initialization before release
Supply Current	1.0µA (typ.), 2.5µA (max.) - enables multi-year battery life in always-on sensor nodes
Output Type	Open-drain, active-low - supports wired-OR reset bus and flexible pull-up voltage selection
Operating Temperature	–40°C to +85°C - validated for industrial-grade embedded control environments
Supply Voltage Range	0.9V to 5.5V - accommodates single-cell Li-ion, 3.3V logic, and 5V legacy systems
Threshold Hysteresis	0.01×VTH (≈29mV) - prevents chatter during slow-rising or noisy VCC conditions

Pinout & Package

The APX803L20-29W5-7 is housed in a 3-pin SOT25 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint, 0.95mm height, and 1.27mm lead pitch. Thermal resistance is θ_JA = 200°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	VCC	Power input pin - supplies internal circuitry; must be decoupled with ≥100nF capacitor near device
2	RESET	Open-drain active-low reset output - requires external pull-up resistor to host VDD (1.8V–5.5V)
3	GND	Analog ground reference - must connect directly to low-impedance system ground plane

Key Features

Feature	Design Value
Fixed 2.9V detection threshold	Eliminates external resistor network and calibration effort for targeted 3.0V nominal rail supervision
220ms factory-programmed delay	Guarantees deterministic reset hold time without timing capacitor tolerance or temperature drift
1µA typical supply current	Reduces quiescent load on coin-cell or energy-harvesting sources by >95% vs. legacy supervisors
±1.5% threshold accuracy	Ensures consistent reset behavior across production lots and temperature without trimming
No external components required	Enables minimal BOM count and PCB area - only VCC decoupling cap needed

Applications

Smart Wearable Sensors

Industrial PLC I/O Modules

Use Scenario: Continuous ECG/PPG monitoring in wrist-worn health trackers powered by CR2032 coin cells.

IC Role / Device Role / Timing Role: Voltage supervisor ensuring MCU reset during battery sag below 2.9V during RF transmission bursts.

Use Value: 1µA supply current extends battery life beyond 18 months; 220ms delay prevents spurious resets during transient brownouts.

Use Scenario: Remote digital input modules operating in factory-floor cabinets with 24VDC-to-3.3V conversion.

IC Role / Device Role / Timing Role: Power-on and brownout detector for ARM Cortex-M7 controller managing fieldbus communication.

Use Value: ±1.5% threshold accuracy guarantees reset at precisely 2.9V across –40°C to +85°C, avoiding false trips in thermally unstable enclosures.

Portable Diagnostic Handhelds

Asset Tracking Beacons

Use Scenario: Battery-powered ultrasound probe with integrated FPGA and analog front-end requiring clean power sequencing.

IC Role / Device Role / Timing Role: Supervisory IC asserting reset to FPGA configuration logic until 3.3V rail stabilizes post-power-up.

Use Value: 20µs fast response captures sub-millisecond VCC dips; open-drain output interfaces directly to FPGA reset pin with 1.8V pull-up.

Use Scenario: GPS-enabled logistics tag using LoRaWAN, sleeping >99% of time on AA alkaline cells.

IC Role / Device Role / Timing Role: Low-quiescent monitor enabling wake-up reset after battery replacement or deep discharge recovery.

Use Value: 0.9V minimum operating voltage allows reset assertion even as battery depletes to 1.0V, preventing firmware lockup.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
APX803L20-29SA-7	SOT23 package (θ_JA = 200°C/W), identical electrical specs	Smaller footprint (2.9mm × 1.6mm) but higher thermal resistance in high-power-density layouts	Select for space-constrained PCBs where thermal dissipation is managed via copper pour
TLV803E29DBVR	Texas Instruments part; 2.93V threshold, 200ms delay, 0.5µA I_CC, SOT23-3	Lower supply current but tighter 2.93V threshold and no 220ms option - requires design validation for timing margin	Choose when ultra-low I_CC dominates over exact 220ms delay requirement

Compared with APX803L20-29W5-7, the SA variant offers identical functionality in a smaller SOT23, while TLV803E29DBVR trades 20ms less delay and 0.5µA lower current for reduced timing flexibility and non-drop-in threshold alignment.

Availability

APX803L20-29W5-7 is available at Aetrix Electronics and suitable for smart wearables, industrial I/O modules, portable diagnostics, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for APX803L20-29W5-7 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 manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q200 for automotive-grade reliability.

The APX803L series targets ultra-low-power supervisory functions in battery-critical applications, emphasizing precision threshold accuracy, nanoscale quiescent current, and factory-programmed timing - optimized for next-generation portable and edge-connected devices.

FAQ

What is the exact reset threshold voltage for APX803L20-29W5-7?

The APX803L20-29W5-7 has a factory-trimmed reset threshold of 2.9V with ±1.5% accuracy over temperature (–40°C to +85°C). This value is fixed internally and does not require external resistors or calibration. Measured hysteresis is 0.01×VTH (≈29mV), ensuring stable release above 2.929V.

Can APX803L20-29W5-7 drive a 10kΩ pull-up resistor to 5V?

Yes - the open-drain RESET pin can sink up to 20mA (absolute max), and typical VOL is ≤0.4V at 3.5mA sink current. With a 10kΩ pull-up to 5V, the output will reliably reach <0.1V under load, satisfying standard CMOS input thresholds for microcontrollers and FPGAs.

Is there a version with adjustable reset delay?

No - the APX803L20-29W5-7 features a factory-programmed 220ms reset timeout. The APX803L family offers only four fixed delay options: 0ms, 55ms, 220ms, and 450ms. Adjustable delays require external RC networks and are not supported in this monolithic voltage detector.

Does APX803L20-29W5-7 meet RoHS and halogen-free requirements?

Yes - APX803L20-29W5-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, and halogen- and antimony-free ("Green" per Diodes Inc. definition: Br+Cl <1500ppm, Sb <1000ppm). Compliance documentation is available via Diodes' quality portal at www.diodes.com/quality.

APX803L20-29W5-7 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:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 2.9V

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-25

APX803L20-29W5-7 FAQ

1.How can I place an order for APX803L20-29W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L20-29W5-7 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 APX803L20-29W5-7 reliable?

The price and inventory of APX803L20-29W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-29W5-7 is usually 5 days.

3.What payment methods are accepted for APX803L20-29W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-29W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L20-29W5-7?

APX803L20-29W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L20-29W5-7 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 APX803L20-29W5-7?

For technical support, including APX803L20-29W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-29W5-7 requirements.

6.How does Aetrix verify that APX803L20-29W5-7 is sourced from the original manufacturer or authorized distributors?

All APX803L20-29W5-7 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 APX803L20-29W5-7 meets industry standards.

7.What is the process for return or replacement of APX803L20-29W5-7?

All APX803L20-29W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-29W5-7, 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 APX803L20-29W5-7 part is unused and in its original packaging.

Return procedure for APX803L20-29W5-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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