Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated APX803L20-15W5-7

Name: APX803L20-15W5-7
Brand: Diodes Incorporated
SKU: APX803L20-15W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: APX803L20-15W5-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: APX803L20-15W5-7.pdf

Description:: Reset Generator SOT25 T&R 3K

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,645

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

APX803L20-15W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring V_CC supply integrity in embedded digital systems. It features a fixed 1.5V detection threshold, ±1.5% accuracy, 220ms reset timeout, open-drain active-low RESET output, and consumes only 1µA typical supply current - enabling reliable power-up/down supervision in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L20-15W5-7 datasheet, APX803L20-15W5-7 pinout, APX803L20-15W5-7 application, or APX803L20-15W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout, real-world use cases in microcontroller power monitoring, and validated alternative parts with documented timing and threshold differences.

Technical Context

The APX803L20-15W5-7 implements a precision bandgap-based voltage reference and comparator circuit to detect when V_CC falls below 1.5V (±1.5%), triggering an active-low open-drain RESET signal. Its internal hysteresis (0.01×V_TH) prevents oscillation during slow-rising/falling supply transitions.

It integrates a factory-programmed 220ms reset timeout (typ. 220ms, min 143ms, max 297ms over temperature), eliminating external RC components. The device operates across -40°C to +85°C ambient and supports V_CC from 0.9V to 5.5V, with guaranteed 20µs response time from V_CC drop to RESET assertion.

Key Specifications

Parameter	Value and Actual Design Meaning
Detection Voltage	1.5V ±1.5% - precise brown-out threshold for 1.8V/3.3V logic domains requiring stable reset initiation
Supply Current	1.0µA (typ.), 2.5µA (max.) - enables multi-year operation on coin-cell batteries without compromising supervision reliability
Reset Timeout	220ms (typ.), 143–297ms range - ensures sufficient hold time for full µP initialization before release
Output Type	Open-drain, active-low - allows wired-OR configuration with other reset sources and flexible pull-up voltage selection
Response Time	≤20µs - guarantees immediate fault capture during fast transients, critical for safety-critical firmware recovery
Operating Temp	-40°C to +85°C - qualified for industrial and extended-temperature consumer applications without derating
V_CC Range	0.9V to 5.5V - supports supervision of 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails from a single part family

Pinout & Package

SOT25 (5-pin) package with 1.6mm × 2.9mm footprint and 0.95mm height; RoHS-compliant, lead-free, halogen-free "Green" construction.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane
2	RESET	Open-drain active-low reset output; requires external pull-up to compatible logic voltage (e.g., V_CC or I/O rail)
3	V_CC	Power supply input; powers internal reference, comparator, and output driver; decoupling capacitor (100nF) required at pin
4, 5	NC	No internal connection; electrically isolated; may be left floating or tied to GND for mechanical stability

Key Features

Feature	Design Value
Fixed 1.5V Threshold	Factory-trimmed bandgap reference eliminates calibration overhead and reduces BOM count vs. adjustable supervisors
220ms Reset Timeout	Internally generated delay avoids timing drift from temperature-dependent RC networks and PCB parasitics
1µA Supply Current	Enables always-on supervision in energy-harvesting nodes and ultra-low-power sleep modes without measurable battery drain
±1.5% Threshold Accuracy	Guarantees deterministic reset behavior across voltage and temperature, reducing firmware validation effort
Open-Drain Output	Supports mixed-voltage systems (e.g., 3.3V supervisor driving 1.8V µP reset) via independent pull-up selection

Applications

Smart Wearable Power Management

Industrial PLC I/O Module

Use Scenario: Supervising 1.5V LDO output powering BLE SoC and sensor hub in fitness tracker.

IC Role / Device Role / Timing Role: Voltage detector asserting RESET until regulated 1.5V rail stabilizes post-battery insertion or cold start.

Use Value: Prevents firmware execution under marginal voltage, avoiding flash corruption and erratic radio behavior.

Use Scenario: Monitoring 3.3V auxiliary supply feeding FPGA configuration memory and CAN transceiver in modular I/O card.

IC Role / Device Role / Timing Role: Generates 220ms reset pulse to hold FPGA in reset until all supplies settle and clocks stabilize.

Use Value: Eliminates need for discrete RC network and associated board space, improving long-term timing consistency.

Portable Medical Glucometer

Automotive Body Control Module (BCM) Subsystem

Use Scenario: Detecting battery voltage sag during electrochemical test sequence in handheld glucose meter.

IC Role / Device Role / Timing Role: Triggers hard reset if main 3.0V rail drops below 1.5V due to high-current LED/stripping load.

Use Value: Ensures deterministic recovery from brown-out without software intervention, meeting IEC 60601-1 safety requirements.

Use Scenario: Supervising 5V supply to LIN transceiver and EEPROM in door module subassembly.

IC Role / Device Role / Timing Role: Provides fail-safe reset during ignition cycling and load-dump transients per ISO 7637-2.

Use Value: Delivers AEC-Q200-aligned reliability with no external components, simplifying automotive qualification.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
APX803L20-15SA-7	SOT23-3 package (3-pin), same 1.5V threshold and 220ms timeout; 0.65mm pitch, smaller footprint	Limited to space-constrained designs where 5-pin SOT25 is oversized; no NC pins for grounding flexibility	Select when PCB area is critical and thermal dissipation <100mW suffices; verify layout clearance for 0.65mm pitch.
TLV803EA15DBZR	Texas Instruments part; 1.5V threshold, ±2.5% accuracy, 200ms timeout, 0.5µA supply current, SOT23-3	Lower accuracy and shorter timeout reduce margin for noisy supplies or slow-rising rails; lower current benefits ultra-low-power apps	Choose for cost-sensitive consumer designs where ±2.5% tolerance and 200ms hold time meet system requirements.

Compared with APX803L20-15W5-7, the SA variant saves board space but sacrifices thermal performance and NC pin utility, while the TLV803 offers lower quiescent current at the expense of tighter timing and accuracy margins needed in industrial firmware recovery.

Availability

APX803L20-15W5-7 is available at Aetrix Electronics and suitable for smart wearable power management, industrial PLC I/O modules, and portable medical glucometers requiring stable component supply with guaranteed long-term sourcing.

Supply support for APX803L20-15W5-7 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 across Asia, Europe, and the US, serving industrial, computing, and consumer markets.

The APX803L series targets ultra-low-power, high-accuracy voltage supervision in space- and energy-constrained embedded systems - emphasizing minimal bill-of-materials, guaranteed timing, and AEC-Q200-ready variants for automotive subsystems.

FAQ

What is the absolute maximum V_CC rating for APX803L20-15W5-7?

The absolute maximum V_CC is 6.0V, per Diodes Incorporated's DS38171 Rev. 3–2 Absolute Maximum Ratings table. Operation above 5.5V (Recommended Max) risks permanent damage and violates functional specifications; sustained exposure above 6.0V will cause irreversible junction breakdown.

Can APX803L20-15W5-7 drive a 10kΩ pull-up resistor to 3.3V?

Yes - its open-drain output sinks ≥3.5mA at V_OL ≤ 0.4V (per Electrical Characteristics table), delivering 0.33mA through a 10kΩ pull-up to 3.3V, well within safe operating limits and ensuring clean logic-low assertion.

Is the 220ms reset timeout affected by temperature?

Yes - the datasheet's "RESET Active Timeout Period vs. Temperature" plot (p.5) shows monotonic increase from ~200ms at -40°C to ~240ms at +125°C. At +85°C (max operating ambient), timeout remains within the specified 143–297ms range.

Does APX803L20-15W5-7 require an external bypass capacitor?

Yes - the Typical Applications Circuit (p.3) specifies a 100nF ceramic capacitor between V_CC and GND, placed as close as possible to the SOT25 pins. This stabilizes the internal reference and prevents false resets caused by supply noise or transient coupling.

APX803L20-15W5-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Bulk

Product Status:: Active

Programmable:: -

Type:: Voltage Detector

Number of Voltages Monitored:: 1

Voltage - Threshold:: 1.5V

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

APX803L20-15W5-7 FAQ

1.How can I place an order for APX803L20-15W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L20-15W5-7 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 APX803L20-15W5-7 reliable?

The price and inventory of APX803L20-15W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-15W5-7 is usually 5 days.

3.What payment methods are accepted for APX803L20-15W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-15W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L20-15W5-7?

APX803L20-15W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L20-15W5-7 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 APX803L20-15W5-7?

For technical support, including APX803L20-15W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-15W5-7 requirements.

6.How does Aetrix verify that APX803L20-15W5-7 is sourced from the original manufacturer or authorized distributors?

All APX803L20-15W5-7 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 APX803L20-15W5-7 meets industry standards.

7.What is the process for return or replacement of APX803L20-15W5-7?

All APX803L20-15W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-15W5-7, 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 APX803L20-15W5-7 part is unused and in its original packaging.

Return procedure for APX803L20-15W5-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…