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

Diodes Incorporated APX803L-24W5-7

Name: APX803L-24W5-7
Brand: Diodes Incorporated
SKU: APX803L-24W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX803L-24W5-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: APX803L-24W5-7.pdf

Description:: RESET GENERATOR SOT25 T&R 3K

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Product details

Overview

APX803L-24W5-7 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 2.4V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 220ms built-in recovery delay - enabling reliable power-on reset in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L-24W5-7 datasheet, APX803L-24W5-7 pinout, APX803L-24W5-7 application, or APX803L-24W5-7 equivalent, key selection criteria include threshold voltage tolerance, reset timeout stability over temperature, open-drain sink capability (3.5mA @ 0.4V), and SOT25 package compatibility with high-density PCB layouts.

Technical Context

The APX803L-24W5-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×V_TH) to prevent oscillation during supply ramp-up/down. Its internal comparator triggers an active-low open-drain RESET signal when V_CC drops below 2.4V and holds it asserted until V_CC exceeds 2.4V + hysteresis.

It integrates a factory-programmed 220ms recovery delay (APX803L20 variant), operates from 0.9V to 5.5V supply, and delivers sub-20µs reset assertion latency - making it suitable for real-time microcontroller startup sequencing where deterministic timing and ultra-low quiescent current are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Detection Threshold	2.4V ±1.5% - ensures accurate brown-out detection across -40°C to +85°C ambient range
Supply Current	1.0µA typical - minimizes battery drain in always-on monitoring applications
Reset Delay	220ms (typ.) - provides stable post-power-up hold-off before system release
Output Type	Open-drain, active-low - enables wired-OR reset bus configuration with external pull-up
Response Time	<20µs - guarantees fast fault capture during transient supply dips
Operating Voltage	0.9V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V logic rails
Hysteresis	0.01×V_TH (24mV) - prevents chatter near threshold during slow supply transitions

Pinout & Package

SOT25 (5-pin) package with 1.6mm × 2.9mm footprint and 0.95mm height; pin 4 and pin 5 are no-connect (NC), enabling layout flexibility without requiring termination.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Reference ground return path for internal comparator and output stage
2	RESET	Open-drain output; sinks up to 3.5mA at ≤0.4V when asserted
3	V_CC	Power input; supplies internal reference, comparator, and delay circuitry
4	NC	No internal connection - may be left floating or grounded per PCB routing needs
5	NC	No internal connection - unused terminal; no electrical function

Key Features

Feature	Design Value
Ultra-low supply current	1.0µA typ. - extends battery life in coin-cell–powered wearables beyond 10 years
Factory-set threshold	2.4V with ±1.5% tolerance - eliminates external resistor network and calibration overhead
Integrated delay timer	220ms fixed recovery - replaces external RC timing components and improves BOM reliability
Open-drain output	3.5mA sink capability at 0.4V - compatible with 1.8V/3.3V/5V logic families via shared pull-up
RoHS & green compliant	Lead-free, halogen-free, antimony-free - meets IEC 61249-2-21 and JEDEC JS709E requirements

Applications

Smart Wearable Sensor Node

Industrial PLC I/O Module

Use Scenario: Continuous heart-rate monitoring using BLE SoC powered by CR2032 battery.

IC Role / Device Role / Timing Role: Monitors 3.0V LDO output; asserts RESET if voltage sags below 2.4V during RF transmission burst.

Use Value: Prevents firmware corruption by ensuring MCU only resumes operation after stable supply recovery (220ms hold).

Use Scenario: DIN-rail mounted remote I/O unit with isolated 24V DC input and 3.3V logic rail.

IC Role / Device Role / Timing Role: Supervises 3.3V FPGA configuration supply; generates clean power-on reset pulse independent of upstream converter ripple.

Use Value: Eliminates need for discrete RC reset generator, reducing component count and improving cold-start reliability at -40°C.

Portable Medical Glucometer

Automotive Body Control Module (BCM)

Use Scenario: Battery-operated handheld device performing electrochemical strip analysis.

IC Role / Device Role / Timing Role: Detects 2.4V rail collapse during LCD backlight activation; holds MCU in reset until supply stabilizes.

Use Value: Guarantees deterministic boot sequence despite momentary 150mA load transients on shared LDO.

Use Scenario: Low-power wake-up circuit in BCM that monitors 5V domain after ignition OFF-to-ON transition.

IC Role / Device Role / Timing Role: Provides 220ms delayed reset to allow CAN transceiver and EEPROM power-up sequencing.

Use Value: Ensures synchronized initialization across multiple ASICs without external timing components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3808G24DBVR	2.4V threshold, 350ms delay, 1.1µA I_Q, SOT23-6 package	Longer delay and larger footprint; requires external pull-up for open-drain output	Select when longer reset timeout or AEC-Q100 qualification is required
MAX809SEUR+T	2.4V threshold, 140ms delay, 12µA I_Q, SOT23-3 package	Higher quiescent current; no NC pins; lacks hysteresis spec in datasheet	Select for cost-sensitive designs where 12µA I_Q is acceptable and board space is constrained

Compared with TPS3808G24DBVR and MAX809SEUR+T, the APX803L-24W5-7 offers tighter threshold accuracy (±1.5% vs ±2.5%), lower supply current (1µA vs 12µA), and SOT25's NC pins for simplified routing - making it optimal for space-constrained, long-life battery applications demanding precise reset timing.

Availability

APX803L-24W5-7 is available at Aetrix Electronics and suitable for smart wearable sensor nodes, industrial PLC I/O modules, portable medical glucometers, and automotive body control modules requiring stable component supply with guaranteed long-term continuity.

Supply support for APX803L-24W5-7 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 and manufacturing in ISO/TS 16949-certified facilities.

The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for ultra-low-power, high-accuracy reset generation in battery-critical and thermally demanding embedded systems.

FAQ

What is the exact reset threshold voltage for APX803L-24W5-7?

The APX803L-24W5-7 has a factory-trimmed detection threshold of 2.4V with ±1.5% accuracy over -40°C to +85°C ambient temperature. This value is fixed internally and does not require external adjustment or calibration.

Can APX803L-24W5-7 drive a 10kΩ pull-up resistor to 3.3V?

Yes - its open-drain RESET output can sink ≥3.5mA at ≤0.4V, resulting in <0.033V voltage drop across a 10kΩ pull-up to 3.3V. This ensures robust low-level signaling even under worst-case process/voltage/temperature corners.

Is the 220ms delay programmable or fixed?

The 220ms recovery delay is factory-programmed and permanently fixed for the APX803L20 variant (denoted by "20" in the part number). No external components or configuration pins alter this timing; it is monolithic and temperature-stable across -40°C to +85°C.

Does APX803L-24W5-7 meet automotive qualification standards?

The APX803L-24W5-7 is not AEC-Q100 qualified. For automotive applications, Diodes recommends contacting their sales team for PPAP-capable, IATF 16949-manufactured alternatives such as the APX803L20-29SR variant with extended temperature screening.

APX803L-24W5-7 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:: 2.4V

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-24W5-7 FAQ

1.How can I place an order for APX803L-24W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L-24W5-7 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-24W5-7 reliable?

The price and inventory of APX803L-24W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-24W5-7 is usually 5 days.

3.What payment methods are accepted for APX803L-24W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-24W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L-24W5-7?

APX803L-24W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L-24W5-7 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-24W5-7?

For technical support, including APX803L-24W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-24W5-7 requirements.

6.How does Aetrix verify that APX803L-24W5-7 is sourced from the original manufacturer or authorized distributors?

All APX803L-24W5-7 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-24W5-7 meets industry standards.

7.What is the process for return or replacement of APX803L-24W5-7?

All APX803L-24W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-24W5-7, 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-24W5-7 part is unused and in its original packaging.

Return procedure for APX803L-24W5-7:

1.Submit a request within 90 days.

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

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