MCP73831T-2ACI/OT IC Controller Lithium Ion 4.2V: Datasheet, Pinout,and Equivalents
Constant - Programmable MCP73831 SC-74A, SOT-753 Tape & Reel (TR) 5.2V 500mA 5 Terminals 5 Pin









Constant - Programmable MCP73831 SC-74A, SOT-753 Tape & Reel (TR) 5.2V 500mA 5 Terminals 5 Pin
The MCP73831T-2ACI/OT employs a constant-current/constant-voltage charge algorithm with selectable preconditioning and charge termination. This article is going to introduce pinout, applications, features, and more details about MCP73831T-2ACI/OT.

Reliable MCP73831T-2ACI/OT Supplier and MCP73831-2ACI/OT Distributor in China - RANTLE
- Overview of MCP73831T-2ACI/OT
- MCP73831T-2ACI/OT Features
- MCP73831T-2ACI/OT Pinout
- MCP73831T-2ACI/OT Block Diagram
- MCP73831T-2ACI/OT 3D Model
- MCP73831T-2ACI/OT Circuit
- Specifications
- MCP73831T-2ACI/OT Application
- MCP73831T-2ACI/OT Package information
- MCP73831T-2ACI/OT Manufacturer
- Datasheet PDF
- Popularity by Region
- Parts with Similar Specs
Overview of MCP73831T-2ACI/OT
The MCP73831T-2ACI /OT devices are highly advanced linear charge management controllers for use in space-limited, cost-sensitive applications. The MCP73831T-2ACI /OT is available in an 8-Lead, 2 mm x 3 mm DFN package or a 5-Lead, SOT-23 package. Along with their small physical size, the low number of external components required make the MCP73831T-2ACI /OT ideally suited for portable applications. For applications charging from a USB port, the MCP73831T-2ACI /OT adheres to all the specifications governing the USB power bus.
The MCP73831T-2ACI/OT employs a constant-current/constant-voltage charge algorithm with selectable preconditioning and charge termination. The constant voltage regulation is fixed with four available options: 4.20V, 4.35V, 4.40V, or 4.50V, to accommodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73831T-2ACI/OT devices limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.
MCP73831T-2ACI/OT Features
• Linear Charge Management Controller:
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse Discharge Protection
• High Accuracy Preset Voltage Regulation : + 0.75%
• Four Voltage Regulation Options:
- 4.20V, 4.35V, 4.40V, 4.50V
• Programmable Charge Current: 15 mA to 500 mA
• Selectable Preconditioning:
- 10%, 20%, 40%, or Disable
• Selectable End-of-Charge Control:
- 5%, 7.5%, 10%, or 20%
• Charge Status Output
- Tri-State Output - MCP73831
- Open-Drain Output - MCP73832
• Automatic Power-Down
• Thermal Regulation
• Temperature Range: -40°C to +85°C
• Packaging:
- 8-Lead, 2 mm x 3 mm DFN
- 5-Lead, SOT-23
MCP73831T-2ACI/OT Pinout

MCP73831T-2ACI-OT Pinout
MCP73831T-2ACI/OT Block Diagram

MCP73831T-2ACI-OT Block Diagram
MCP73831T-2ACI/OT 3D Model

MCP73831T-2ACI Symbol

MCP73831T-2ACI Footprint

MCP73831T-2ACI-OT 3D Model
MCP73831T-2ACI/OT Circuit

MCP73831T-2ACI/OT Circuit
Specifications
- TypeParameter
- Factory Lead Time6 Weeks
- Contact Plating
Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.
Tin - Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - 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.
SC-74A, SOT-753 - Number of Pins5
- Weight200.998119mg
- Voltage Rated
RATED voltage is the voltage on the nameplate - the "design point" for maximum power throughput and safe thermal operation.
4.534V - Usage LevelIndustrial grade
- 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) - Published2008
- 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 - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations5
- Termination
Termination in electronic components refers to the practice of matching the impedance of a circuit to prevent signal reflections and ensure maximum power transfer. It involves the use of resistors or other components at the end of transmission lines or connections. Proper termination is crucial in high-frequency applications to maintain signal integrity and reduce noise.
SMD/SMT - 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 - Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
1.54W - 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
- Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
5.2V - 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.
40 - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
MCP73831 - Pin Count
a count of all of the component leads (or pins)
5 - Number of Outputs1
- Output Voltage
Output voltage is a crucial parameter in electronic components that refers to the voltage level produced by the component as a result of its operation. It represents the electrical potential difference between the output terminal of the component and a reference point, typically ground. The output voltage is a key factor in determining the performance and functionality of the component, as it dictates the level of voltage that will be delivered to the connected circuit or load. It is often specified in datasheets and technical specifications to ensure compatibility and proper functioning within a given system.
4.2V - Number of Channels1
- Max Supply Voltage
In general, the absolute maximum common-mode voltage is VEE-0.3V and VCC+0.3V, but for products without a protection element at the VCC side, voltages up to the absolute maximum rated supply voltage (i.e. VEE+36V) can be supplied, regardless of supply voltage.
6V - Min Supply Voltage
The minimum supply voltage (V min ) is explored for sequential logic circuits by statistically simulating the impact of within-die process variations and gate-dielectric soft breakdown on data retention and hold time.
3.75V - Analog IC - Other Type
Analog IC - Other Type is a parameter used to categorize electronic components that are integrated circuits (ICs) designed for analog signal processing but do not fall into more specific subcategories such as amplifiers, comparators, or voltage regulators. These ICs may include specialized analog functions such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), voltage references, or signal conditioning circuits. They are typically used in various applications where precise analog signal processing is required, such as in audio equipment, instrumentation, communication systems, and industrial control systems. Manufacturers provide detailed specifications for these components to help engineers select the most suitable IC for their specific design requirements.
POWER SUPPLY SUPPORT CIRCUIT - Output Current
The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.
500mA - 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.
YES - Max Output Voltage
The maximum output voltage refers to the dynamic area beyond which the output is saturated in the positive or negative direction, and is limited according to the load resistance value.
4.5V - Max Input Voltage
Max Input Voltage refers to the maximum voltage level that an electronic component can safely handle without getting damaged. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the specified maximum input voltage can lead to overheating, electrical breakdown, or permanent damage to the component. It is important to carefully adhere to the manufacturer's guidelines regarding the maximum input voltage to prevent any potential issues and maintain the reliability of the electronic device.
6V - Nominal Input Voltage
The actual voltage at which a circuit operates can vary from the nominal voltage within a range that permits satisfactory operation of equipment. The word “nominal” means “named”.
6V - Min Output Voltage
Min Output Voltage refers to the lowest voltage level that an electronic component, such as a voltage regulator or power supply, can provide reliably under specified conditions. It indicates the minimum threshold required for proper operation of connected devices. Operating below this voltage may lead to device malfunction or failure to operate as intended.
4.168V - Fault Protection
Protection against electric shock under. single fault conditions.
Over Voltage - Battery Chemistry
A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells.
Lithium Ion/Polymer - Drain to Source Resistance
The Drain to Source Resistance, often denoted as RDS(on), is a crucial parameter in electronic components, particularly in field-effect transistors (FETs) such as MOSFETs. It represents the resistance between the drain and source terminals when the FET is in its on-state, conducting current. A lower RDS(on) value indicates better conductivity and efficiency, as it results in less power dissipation and heat generation in the component. Designers often aim to minimize RDS(on) to improve the performance and overall efficiency of electronic circuits, especially in power applications where minimizing losses is critical.
350mOhm - Programmable Features
Some of the features that characterize programmable automation are:High investment in general-purpose equipment; Low production rates relative to fixed automation; Flexibility to deal with changes in product configuration; and Most suitable for batch production.
Current - Current - Charging
Current - Charging refers to the flow of electric charge supplied to a rechargeable battery or capacitor during the charging process. It represents the amount of current that is delivered to the energy storage device to replenish its energy. This parameter is critical in determining how quickly a device can be charged and must be managed to ensure safety and longevity of the component. Overcharging or supplying excessive current can lead to overheating or damage, making it essential to adhere to specified charging currents for optimal performance.
Constant - Programmable - Charge Current - Max
Charge Current - Max is the maximum amount of current that can safely flow into a battery or capacitor during the charging process. It is a crucial parameter that helps prevent overheating and damage to the component. Exceeding this current during charging can lead to reduced performance, shortened lifespan, or even failure of the electronic component. This parameter should be adhered to for safe and effective operation of the device.
500mA - Height1.2954mm
- Length3.0988mm
- Width1.8034mm
- REACH SVHC
The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.
No SVHC - Radiation Hardening
Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.
No - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
MCP73831T-2ACI/OT Application
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers
MCP73831T-2ACI/OT Package information

MCP73831T-2ACI/OT Package information
MCP73831T-2ACI/OT Manufacturer
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.
Datasheet PDF
- Datasheets :
- PCN Assembly/Origin :
- PCN Packaging :
- PCN Design/Specification :
- ConflictMineralStatement :
Popularity by Region
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsMax Output VoltageMin Output VoltageOutput VoltageOutput CurrentMin Supply VoltageSupply VoltageView Compare
MCP73831T-2ACI/OT
SC-74A, SOT-753
5
4.5 V
4.168 V
4.2 V
500 mA
3.75 V
5.2 V
SC-74A, SOT-753
5
4.5 V
4.168 V
4.2 V
10 mA
3.75 V
-
SC-74A, SOT-753
5
4.2 V
-
4.2 V
500 mA
3.75 V
5.2 V
SC-74A, SOT-753
5
4.2 V
-
4.2 V
450 mA
3.75 V
5.2 V
SOT-23
6
-
-
-
-
4.5 V
-
How many pins of MCP73831T-2ACI/OT ?
5 pins.
What’s the operating temperature of MCP73831T-2ACI/OT?
-40°C~85°C TA.
What’s the suitable supply voltage of MCP73831T-2ACI/OT
5.2V-6V
What’s the output voltage of MCP73831T-2ACI/OT?
4.2V
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