xl4015 DC Buck Converter: Datasheet, Pinout and Alternatives
XL4015E1 datasheet pdf and Unclassified product details from XLSEMI stock available at Utmel









The XL4015 is a 180 kHz fixed frequency PWM buck (step-down) DC to DC converter, capable of driving a 5 Ampere load with high efficiency, low ripple, and excellent line and load regulation. This video will cover XL4015 features, alternatives, package, pinout, and other aspects. Please have a look.

Review of XL4015 5A 1.25 -30V DC CC Buck converter with thermal image
xl4015 Overview
The XL4015 5A CC /CV Adjustable Step-Down DC-DC Buck Converter Module is a linear module with constant voltage and constant current (CC-CV) functions and excellent performance. When it's being used as a charger. This module is stable and uses a nice chip as its core. It also has a low ripple of 50 mV.
This product is a 300 kHz fixed frequency PWM buck (step-down) DC/DC module that can drive a 0-5A (Max) Adjustable load while maintaining high efficiency, minimal ripple, and excellent line and load regulation. Use as a step-down module with built-in overcurrent protection.
The DC/DC buck module is used in applications where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, and portable instrument power supplies for LCD monitors and LCD TVs. Industrial equipment buck, telecom/networking equipment, 24V car laptop power supply 12V to 3.3 V, 12V to 5V, 24V to 5V, 24V to 12V. 36V buck to 24V. and so on.
This module's output voltage and current can be adjusted. Because it is capable of CC-CV, it may also be used as a dedicated charger for Lithium Batteries (Li-Ion, LiPo ).
xl4015 CAD Models
Symbol

Footprint

xl4015 Features
Wide 8V to 36 V Input Voltage Range
Output Adjustable from 1.25 V to 32V
Maximum Duty Cycle 100 %
Minimum Drop Out 0.3 V
Fixed 180KHz Switching Frequency
5A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency up to 96 %
Excellent line and load regulation
Built-in thermal shutdown function
Built-in current limit function
Built-in output short protection function
Available in TO263-5L package
xl4015 Applications
① LCD Monitor and LCD TV
② Portable instrument power supply
③ Telecom / Networking Equipment
xl4015 Function Block

xl4015 Typical Application Circuit

xl4015 Pinout and Configurations

| Pin Number | Pin Name | Description |
| 1 | GND | Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL4015 |
| 2 | FB | Feedback Pin (FB). Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 1.25V. |
| 3 | SW | Power Switch Output Pin (SW). SW is the switch node that supplies power to the output |
| 4 | VC | Internal Voltage Regulator Bypass Capacity. In a typical system application, The VC pin connects a 1uf capacity to VIN. |
| 5 | VIN | Supply Voltage Input Pin. XL4015 operates from an 8V to 36V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. |
xl4015 Dimensions
| Width | 20mm |
| Height | 10mm |
| Depth | 40mm |
| Weight | 30g |
Specifications
- TypeParameter
- Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
TO-263-5 - 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) - Function
The parameter "Function" in electronic components refers to the specific role or purpose that the component serves within an electronic circuit. It defines how the component interacts with other elements, influences the flow of electrical signals, and contributes to the overall behavior of the system. Functions can include amplification, signal processing, switching, filtering, and energy storage, among others. Understanding the function of each component is essential for designing effective and efficient electronic systems.
Step-Down - 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.
36V - 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 - Voltage - Input (Min)
Voltage - Input (Min) refers to the minimum voltage level that an electronic component requires to operate correctly. It indicates the lowest voltage that can be applied to the component while still allowing it to function as intended. If the input voltage falls below this specified minimum, the component may not perform properly or may fail to operate altogether. This parameter is critical for ensuring reliable operation and longevity of the device in electronic circuits.
8V - 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 - Current - Output
Current - Output is a parameter in electronic components that refers to the maximum amount of current that can be delivered by the output of the component. It is a crucial specification as it determines the capability of the component to supply power to connected devices or circuits. The current output rating is typically specified in amperes (A) and is important for ensuring that the component can safely and effectively power the load it is connected to without overheating or failing. Designers and engineers must consider the current output rating when selecting components to ensure compatibility and reliable operation of the overall system.
5A - 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 - Topology
In the context of electronic components, "topology" refers to the arrangement or configuration of the components within a circuit or system. It defines how the components are connected to each other and how signals flow between them. The choice of topology can significantly impact the performance, efficiency, and functionality of the electronic system. Common topologies include series, parallel, star, mesh, and hybrid configurations, each with its own advantages and limitations. Designers carefully select the appropriate topology based on the specific requirements of the circuit to achieve the desired performance and functionality.
Buck - Frequency - Switching
"Frequency - Switching" in electronic components refers to the rate at which a device, such as a transistor or switching regulator, turns on and off during operation. This parameter is crucial in determining the efficiency and performance of power converters, oscillators, and other circuits that rely on rapid switching. Higher switching frequencies typically allow for smaller component sizes but may require more advanced design considerations to manage heat and electromagnetic interference.
180kHz - Synchronous Rectifier
Synchronous rectification is a technique for improving the efficiency of rectification by replacing diodes with actively controlled switches, usually power MOSFETs or power bipolar junction transistors (BJT).
No - Voltage - Output (Max)
Voltage - Output (Max) is a parameter that specifies the maximum voltage level that can be delivered by an electronic component, such as an integrated circuit or a power supply. It indicates the highest voltage that the component is designed to provide at its output terminal under normal operating conditions. This parameter is crucial for determining the compatibility of the component with other parts of the circuit and ensuring that the voltage requirements are met for proper functionality. Designers and engineers use this specification to ensure that the component can safely deliver the required voltage without exceeding its maximum output capability.
32V - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant
How to use xl4015?
In any case, using this module is meaningless unless you know how to use it effectively. Allow me to demonstrate the (believed to be correct) method given by my dependable foreign provider. Assume you wish to get 1A current from a 9VDC source. Connect a digital multimeter across the output connector (dialed to a suitable dc voltage range ) and adjust the V-ADJ trim pot to get a 9.0VDC result. After that, set the multimeter to the appropriate current range and adjust the I-ADJ trim pot to 1.0A. Remove the digital multimeter. connect the load, and turn it on. It's worth noting that turning one trim pot may have a minor effect on the setting of the other - this isn't a significant deal, so leave it alone!
XL4015 Major Disadvantage
Although the XL4015 module has many good characteristics that a buck converter should have, it is missing one important feature.
The module has no means of changing the output current to the load specs' chosen levels.
As a result, if you try to charge a Li-Ion battery with an XL4015 module at a rate of 2 amps, you won't be able to do so due to the aforementioned limitation.
Similarly, because the module is rated for a fixed 5 amp current, you'd be unhappy if you wished to run a 3.3 V LED at a 3 amp maximum current rate.
xl4015 Package


xl4015 Datasheet
xl4015 Alternatives
Trend Analysis
Parts with Similar Specs
How do I use xl4015 module?
Connect a digital multimeter across the output connector (dialed to a suitable dc voltage range) and adjust the V-ADJ trim pot to get a 9.0VDC result. After that, set the multimeter to the appropriate current range and adjust the I-ADJ trim pot to 1.0A.
What is a step down buck converter?
A buck converter, also known as a step-down converter, is a DC/DC power converter that provides voltage step down and current step up. The converter reduces the voltage when the power source has a higher voltage than Vin.
What is the difference between buck converter and buck regulator?
Buck converter converts DC into a lower voltage DC. It has a constant transformation ratio. Buck regulator is used to maintaining a constant voltage DC output for a varying voltage DC input. So the transformation ratio keeps changing here in order to keep the output voltage constant.
Can XL4015 be operated in 100℃?
Yes, its recommended operating temperature is between-40°C and 125°C.
Where is XL4015 made from?
XL4015 comes from XLSEMI.
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