MIC29302WU Voltage Regulator: Pinout, Applications and Datasheet
Enable Adjustable MIC29302 PMIC TO-263-6, D2Pak (5 Leads + Tab), TO-263BA









Enable Adjustable MIC29302 PMIC TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
A voltage regulator with high current, high precision, and low dropout is the Microchip Technology MIC29302WU. This article will introduce its pinout, applications and datasheet.
MIC29302WU Description
The Microchip Technology MIC29302WU is a high-current, low-dropout voltage regulator that can provide up to 3A of output current with an adjustable output voltage from 1.25V to 25V. It uses a proprietary Super βeta PNP® process with a PNP pass element, which results in low dropout voltage (450mV at full load) and low ground current. It also has a shutdown feature that allows the regulator to be turned off by a logic signal. The MIC29302WU is available in a TO-263-5 package and can operate in a wide temperature range from -40°C to +125°C. It is suitable for applications that require high output current and low dropout voltage, such as battery-powered devices, post regulators, and distributed power systems.
MIC29302WU Features
Superior current capacity
High precision
Minimal dropout voltage
Minimal ground current
100% assured tolerance
Positive LDO regulator that is programmable
1.5V minimum, 25V maximum, and 0.6V dropout
PSSO5 Logic level ON/OFF control for BIPolar
Error flag that indicates when the output is not in compliance
1.25 26 v output voltage, 4.59 mm high
-40 °C as the minimum working temperature
Specifications
- TypeParameter
- Factory Lead Time7 Weeks
- 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.
TO-263-6, D2Pak (5 Leads + Tab), TO-263BA - Number of Pins5
- Supplier Device Package
The parameter "Supplier Device Package" in electronic components refers to the physical packaging or housing of the component as provided by the supplier. It specifies the form factor, dimensions, and layout of the component, which are crucial for compatibility and integration into electronic circuits and systems. The supplier device package information typically includes details such as the package type (e.g., DIP, SOP, QFN), number of pins, pitch, and overall size, allowing engineers and designers to select the appropriate component for their specific application requirements. Understanding the supplier device package is essential for proper component selection, placement, and soldering during the manufacturing process to ensure optimal performance and reliability of the electronic system.
TO-263-5 - 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~125°C - 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.
Tube - Published1999
- 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
3 (168 Hours) - Max Operating Temperature
The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
125°C - Min Operating Temperature
The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.
-40°C - 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.
MIC29302 - Number of Outputs1
- Voltage - Input (Max)
Voltage - Input (Max) is a parameter in electronic components that specifies the maximum voltage that can be safely applied to the input of the component without causing damage. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the maximum input voltage can lead to electrical overstress, which may result in permanent damage or failure of the component. It is important to carefully adhere to the specified maximum input voltage to prevent any potential issues and maintain the reliability of the electronic system.
26V - 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.
12V - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
Adjustable - Max Output Current
The maximum current that can be supplied to the load.
3A - Polarity
In electronic components, polarity refers to the orientation or direction in which the component must be connected in a circuit to function properly. Components such as diodes, capacitors, and LEDs have polarity markings to indicate which terminal should be connected to the positive or negative side of the circuit. Connecting a component with incorrect polarity can lead to malfunction or damage. It is important to pay attention to polarity markings and follow the manufacturer's instructions to ensure proper operation of electronic components.
Positive - Output Configuration
Output Configuration in electronic components refers to the arrangement or setup of the output pins or terminals of a device. It defines how the output signals are structured and how they interact with external circuits or devices. The output configuration can determine the functionality and compatibility of the component in a circuit design. Common types of output configurations include single-ended, differential, open-drain, and push-pull configurations, each serving different purposes and applications in electronic systems. Understanding the output configuration of a component is crucial for proper integration and operation within a circuit.
Positive - Quiescent Current
The quiescent current is defined as the current level in the amplifier when it is producing an output of zero.
35mA - Control Features
Control features in electronic components refer to specific functionalities or characteristics that allow users to manage and regulate the operation of the component. These features are designed to provide users with control over various aspects of the component's performance, such as adjusting settings, monitoring parameters, or enabling specific modes of operation. Control features can include options for input/output configurations, power management, communication protocols, and other settings that help users customize and optimize the component's behavior according to their requirements. Overall, control features play a crucial role in enhancing the flexibility, usability, and performance of electronic components in various applications.
Enable - Accuracy
Accuracy in electronic components refers to the degree to which a measured value agrees with the true or accepted value. It evaluates the precision of a component in providing correct output or measurement under specified conditions. High accuracy indicates minimal deviation from the actual value, while low accuracy shows significant error in measurement. This parameter is crucial in applications where precise data is essential for reliable performance and decision-making.
1 % - 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.
25V - Voltage - Output (Min/Fixed)
Voltage - Output (Min/Fixed) refers to the minimum fixed output voltage level that an electronic component, such as a voltage regulator or power supply, is designed to provide under specified load conditions. This parameter ensures that the device consistently delivers a reliable voltage that meets the requirements of the connected circuits or components. It is critical for applications where stable and predictable voltage is necessary for proper operation.
1.25V - Number of Regulators
A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow. The voltage regulator keeps the power level stabilized. A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow.
1 - Min Input Voltage
The parameter "Min Input Voltage" in electronic components refers to the minimum voltage level that must be applied to the component for it to operate within its specified parameters. This value is crucial as providing a voltage below this minimum threshold may result in the component malfunctioning or not functioning at all. It is important to adhere to the specified minimum input voltage to ensure the proper operation and longevity of the electronic component. Failure to meet this requirement may lead to potential damage to the component or the overall system in which it is used.
2.5V - Protection Features
Protection features in electronic components refer to the built-in mechanisms or functionalities designed to safeguard the component and the overall system from various external factors or internal faults. These features are crucial for ensuring the reliability, longevity, and safety of the electronic device. Common protection features include overvoltage protection, overcurrent protection, reverse polarity protection, thermal protection, and short-circuit protection. By activating these features when necessary, the electronic component can prevent damage, malfunctions, or hazards that may arise from abnormal operating conditions or unforeseen events. Overall, protection features play a vital role in enhancing the robustness and resilience of electronic components in diverse applications.
Over Current, Over Temperature, Reverse Polarity, Transient Voltage - Voltage Dropout (Max)
Voltage Dropout (Max) refers to the minimum voltage difference between the input and output of a voltage regulator or linear power supply needed to maintain proper regulation. It indicates the maximum allowable voltage drop across the device for it to function effectively without dropout. If the input voltage falls below this threshold, the output voltage may drop below the specified level, leading to potential operational issues for connected components. This parameter is critical for ensuring stable and reliable power delivery in electronic circuits.
0.6V @ 3A - 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.
26V - Reference Voltage
A voltage reference is an electronic device that ideally produces a fixed (constant) voltage irrespective of the loading on the device, power supply variations, temperature changes, and the passage of time. Voltage references are used in power supplies, analog-to-digital converters, digital-to-analog converters, and other measurement and control systems. Voltage references vary widely in performance; a regulator for a computer power supply may only hold its value to within a few percent of the nominal value, whereas laboratory voltage standards have precisions and stability measured in parts per million.
1.24V - Dropout Voltage
Dropout voltage is the input-to-output differential voltage at which the circuit ceases to regulate against further reductions in input voltage; this point occurs when the input voltage approaches the output voltage.
370mV - 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.
1.27V - Input Bias Current
Input Bias Current refers to the small amount of current that flows into the input terminals of an electronic component, such as an operational amplifier. It is primarily caused by the input impedance of the device and the characteristics of the transistors within it. This current is crucial in determining the accuracy of the analog signal processing, as it can affect the level of voltage offset and signal integrity in the application. In many precise applications, minimizing input bias current is essential to achieve optimal performance.
40nA - Output Voltage Accuracy
Output voltage accuracy is a crucial parameter in electronic components, especially in devices like voltage regulators and power supplies. It refers to how closely the actual output voltage matches the specified or desired voltage level. This parameter is typically expressed as a percentage of the nominal output voltage. A higher accuracy value indicates that the output voltage is more consistent and reliable, which is important for ensuring proper functioning of electronic circuits and devices. Manufacturers often provide specifications for output voltage accuracy to help users select components that meet their requirements for precision and performance.
1 % - Height4.59mm
- Length10.67mm
- Width9.17mm
- 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
MIC29302WU Pinout

MIC29302WU Applications
Battery-powered devices: The MIC29302WU can provide a stable and adjustable output voltage for devices that run on batteries, such as laptops, cameras, phones, etc. It can also extend the battery life by reducing the dropout voltage and ground current.
Post regulators: The MIC29302WU can be used as a post regulator for switching power supplies, such as buck converters, boost converters, or flyback converters. It can improve the output voltage accuracy and ripple rejection by filtering out the switching noise and compensating for the load variations.
Distributed power systems: The MIC29302WU can be used as a point-of-load regulator for distributed power systems, such as servers, routers, or telecom equipment. It can provide local regulation for each load with high efficiency and fast transient response
MIC29302WU CAD Model
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MIC29302WU Alternatives
Part Number | Description | Manufacturer |
MIC29302WU-TR | 1.25 V-25V ADJUSTABLE POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO5 | Microchip Technology Inc |
MIC29303BUT&R | Adjustable Positive LDO Regulator, 1.25V Min, 25V Max, 0.6V Dropout, BIPolar, PSSO5, TO-263, D2PAK-5 | Micrel Inc |
MIC29303WU-TR | 1.25 V-25V ADJUSTABLE POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO5 | Microchip Technology Inc |
MIC29303BU | Adjustable Positive LDO Regulator, 1.25V Min, 25V Max, 0.6V Dropout, BIPolar, PSSO5, TO-263, D2PAK-5 | Microchip Technology Inc |
MIC29302BUT&R | Adjustable Positive LDO Regulator, 1.25V Min, 25V Max, 0.6V Dropout, BIPolar, PSSO5, TO-263, D2PAK-5 | Micrel Inc |
MIC29302BU | Adjustable Positive LDO Regulator, 1.25V Min, 25V Max, 0.6V Dropout, BIPolar, PSSO5, TO-263, D2PAK-5 | Micrel Inc |
MIC29302BUT&R | Adjustable Positive LDO Regulator, 1.25V Min, 25V Max, 0.6V Dropout, BIPolar, PSSO5, TO-263, D2PAK-5 | Microchip Technology Inc |
MIC29302WU | Adjustable Positive LDO Regulator, | Rochester Electronics LLC |
MIC29303WU | 1.25 V-25V ADJUSTABLE POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO5 | Microchip Technology Inc |
MIC29302WU Manufacturer
A publicly traded American company called Microchip Technology Incorporated produces integrated circuits for microcontrollers, mixed-signal devices, analog devices, and Flash-IP. Its offerings include linear, interface, and wireless products, as well as microcontrollers (PIC, dsPIC, AVR, and SAM), serial EEPROM devices, serial SRAM devices, embedded security devices, radio frequency (RF) devices, temperature, power, and battery management analog devices.
Parts with Similar Specs
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What is MIC29302WU?
A voltage regulator with high current, good precision, and low dropout is the MIC29302WU TR. These regulators have very low ground current and typical dropout voltages of 350 mV to 425 mV (full load) thanks to Micrel's exclusive Super eta PNP® technology and a PNP pass element.
What is the dropout voltage of the MIC29302WU?
The dropout voltage of the MIC29302WU is the difference between the input and output voltages when the regulator is in regulation. The typical dropout voltage of the MIC29302WU is 450mV at full load, which means that the input voltage must be at least 450mV higher than the output voltage for the regulator to maintain the desired output voltage.
What is the ground current of the MIC29302WU?
The ground current of the MIC29302WU is the current that flows from the input to the ground pin of the regulator. The ground current of the MIC29302WU is very low, typically 12mA at full load, which means that the regulator does not consume much power from the input source.
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