APX803L Micro-power Voltage Detector: Pinout, Typical Application Circuit and Datasheet
3 Terminals Voltage supervisor 1 Channels
The APX803L is brand new micro-power voltage detector series developed by Diodes Inc. with target to be used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. It provides wide range of detection voltage level ranging from 1.2V to 5.0V with 0.1V per step options fixed internally from circuit design. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

How To Use Voltage Detector
APX803L Pinout
The following figure is the diagram of APX803L pinout.

Pinout
APX803L CAD Model
The followings are APX803L Symbol, Footprint, and 3D Model.

PCB Symbol

PCB Footprint

3D Model
APX803L Overview
The APX803L is brand new micro-power voltage detector series developed by Diodes Inc. with target to be used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. It provides wide range of detection voltage level ranging from 1.2V to 5.0V with 0.1V per step options fixed internally from circuit design. As to supply current, APX803L series requires low supply current level of 1µA (typical) which gives no burden to power efficiency on systems requiring detection functions, such as smart phone, battery-powered devices, Internet equipments and so on. These circuits perform the supervisory function by sending out a reset signal whenever it founds the monitored VCC level falls below a chosen threshold voltage level and the reset signal will remain until VCC recovers to a level higher than threshold voltage. The APX803L has an open-drain output with an active-low output pin and features several delay time options (0ms, 55ms, 220ms and 450ms) for system need. The APX803L is available in two pin out variants of the 3-pin SOT23, SOT323, SC59 and SOT25 packages.
This article provides you with a basic overview of the APX803L Micro-power Voltage Detector, including its pin descriptions, features and specifications, etc., to help you quickly understand what APX803L is.
APX803L Features
● Low Supply Current: 1.0µA (typ.), 2.5µA (max.)
● Internal Fixed 1.2V to 5.0V Threshold with 0.1V Step
● High Threshold Voltage Accuracy: ±1.5%
● Quick Reset within 20μs
● Built-in Recovery Delay Time Options: 0ms, 55ms, 220ms and 450ms
● Open-Drain Output: Active Low
● No External Components Required
● SOT23, SOT323, SC59 and SOT25 Packages
● Totally Lead-Free & Fully RoHS Compliant
● Halogen and Antimony Free. “Green” Device
Specifications
- TypeParameter
- Factory Lead Time23 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
TO-236-3, SC-59, SOT-23-3 - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e3 - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Number of Terminations3
- ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - TypeSimple Reset/Power-On Reset
- Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
Matte Tin (Sn) - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
1.1V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
260 - Number of Functions1
- Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
30 - Output
In electronic components, the parameter "Output" typically refers to the signal or data that is produced by the component and sent to another part of the circuit or system. The output can be in the form of voltage, current, frequency, or any other measurable quantity depending on the specific component. The output of a component is often crucial in determining its functionality and how it interacts with other components in the circuit. Understanding the output characteristics of electronic components is essential for designing and troubleshooting electronic circuits effectively.
Open Drain or Open Collector - JESD-30 Code
JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.
R-PDSO-G3 - Number of Channels1
- Adjustable Threshold
The "Adjustable Threshold" parameter in electronic components refers to the ability to manually set or modify the threshold level at which a specific function or operation is triggered. This feature allows users to customize the sensitivity or activation point of the component according to their specific requirements or preferences. By adjusting the threshold, users can fine-tune the performance of the component to suit different applications or environmental conditions. This flexibility in threshold adjustment can be particularly useful in various electronic devices and systems where precise control over triggering levels is necessary for optimal functionality.
NO - Reset
The "Reset" parameter in electronic components refers to a function that initializes or sets a device to a predefined state. It is often used to clear any temporary data, errors, or configurations that may have been stored during operation. The reset process can ensure that the device starts from a known good state, allowing for reliable performance in subsequent tasks. This parameter is critical in digital circuits and systems where proper initialization is necessary for correct functioning.
Active Low - Voltage - Threshold
Voltage - Threshold is a parameter in electronic components that refers to the minimum voltage level required to trigger a specific function or operation within the component. It is the critical voltage level at which the component transitions from one state to another, such as turning on or off. This threshold voltage is essential for ensuring the proper functioning of the component and is often specified in the component's datasheet. Understanding the voltage threshold is crucial for designing and troubleshooting electronic circuits to ensure that the component operates within its specified voltage range.
1.3V - Number of Voltages Monitored
Voltage monitoring relays can detect not only under-voltages and over-voltages, but also voltage-related issues such as phase imbalances, phase loss, and phase sequence. Voltage monitoring relays are designed for either single-phase or three-phase systems.
1 - Voltage - Supply (Max)
Voltage - Supply (Max) is a parameter in electronic components that specifies the maximum voltage that can be safely applied to the component for proper operation. This parameter is crucial for ensuring the component's longevity and preventing damage due to overvoltage conditions. Exceeding the maximum supply voltage can lead to component failure, reduced performance, or even permanent damage. Designers must carefully consider this parameter when selecting components and designing circuits to ensure reliable and safe operation within the specified voltage limits.
5.5V - Voltage - Supply (Min)
Voltage - Supply (Min) is a parameter in electronic components that specifies the minimum voltage required for the component to operate within its specified performance range. This parameter indicates the lowest voltage level that can be safely applied to the component without causing malfunctions or damage. It is crucial to ensure that the supply voltage provided to the component is equal to or higher than the specified minimum voltage to guarantee proper functionality and reliability. Failure to meet this requirement may result in erratic behavior, reduced performance, or even permanent damage to the component.
0.9V - Length2.9mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
APX803L Functional Block Diagram
The following is the Functional Block Diagram of APX803L.

Functional Block Diagram
APX803L Applications
● Computers
● Controllers
● Intelligent Instruments
● Critical µP and µC Power Monitoring
● Portable/Battery Powered Equipment
APX803L Typical Application Circuit
The following is the Typical Application Circuit of APX803L.

Typical Applications Circuit
APX803L Package
The following diagram shows the APX803L package.

Package Outline
APX803L Suggested Pad Layout
The following diagram shows the APX803L Suggested Pad Layout.

Suggested Pad Layout
APX803L Marking Information
The following is the Marking Information of APX803L.

Marking Information
APX803L Manufacturer
Diodes Incorporated delivers high-quality semiconductor products to the world's leading companies in the consumer electronics, computing, communications, industrial, and automotive markets. They leverage their expanded product portfolio of discrete, analog, and mixed-signal products and leading-edge packaging technology to meet customers' needs. Their broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 25 sites, including engineering, testing, manufacturing, and customer service, enables us to be a premier provider for high-volume, high-growth markets.
Datasheet PDF
- Environmental Information :
- Datasheets :
- PCN Assembly/Origin :
What’s the operating temperature of APX803L?
-40°C~85°C TA.
What is the essential property of the APX803L?
The APX803L is brand new micro-power voltage detector series developed by Diodes Inc. with target to be used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems.
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