A Comprehensive Guide to LTM4661IY#PBF DC-DC Switching Regulator
Linear Technology/Analog Devices
0.7V 25-Pin LTM4661 DC DC Voltage Regulator 1 Outputs 1MHz Tray 25-PowerBBGA Module









0.7V 25-Pin LTM4661 DC DC Voltage Regulator 1 Outputs 1MHz Tray 25-PowerBBGA Module
This article provides a detailed overview of the LTM4661IY#PBF DC-DC switching regulator, a high-performance power management integrated circuit manufactured by Linear Technology/Analog Devices. The article covers the product description, key features, primary and secondary applications, reference designs, alternative parts, and frequently asked questions to help electronic engineers and designers understand and utilize this versatile component effectively.
Product Introduction
Description:
The LTM4661IY#PBF is a step-up DC-DC switching regulator designed to provide efficient power conversion in various electronic applications. It features a 25-PowerBBGA module package with 25 pins and operates over a wide temperature range of -40°C to 125°C. With a maximum input voltage of 5.5V and an adjustable output voltage ranging from 1.2V to 15V, this regulator is capable of delivering a maximum output current of 4A. The LTM4661IY#PBF utilizes a boost topology with a synchronous rectifier for improved efficiency and performance.
Features:
- Wide input voltage range (0.7V to 5.5V) for versatile application compatibility
- Adjustable output voltage (1.2V to 15V) for flexibility in power supply design
- High output current capability (4A) for powering a wide range of loads
- Boost topology with synchronous rectifier for improved efficiency
- High switching frequency (1MHz) for compact and efficient power conversion
- RoHS3 compliant and MSL level 4 for environmental compliance and reliability
Applications:
Primary Applications:
1. Portable electronic devices
2. Battery-powered applications
3. Industrial automation systems
4. IoT devices
5. Power-over-Ethernet (PoE) systems
Secondary Applications:
1. Automotive electronics
2. Telecommunications equipment
3. Medical devices
4. LED lighting systems
5. Consumer electronics
Applicable Specific Modules:
1. Voltage regulators
2. Power management systems
3. Battery charging circuits
4. Power supply modules
5. Motor control systems
Reference Designs:
1. Power supply for IoT devices
2. Battery charger for portable electronics
3. LED driver for lighting applications
4. Motor control system for robotics
5. Power management system for industrial automation
Alternative Parts:
1. LTM4662IY#PBF - Similar specifications with dual output capability
2. LTM4663IY#PBF - Higher output current capability (up to 6A)
3. LTM4664IY#PBF - Lower input voltage range for specific applications
4. LTM4665IY#PBF - Adjustable output voltage with different pin configurations
5. LTM4666IY#PBF - Higher switching frequency for compact designs
FAQs:
Q: What is the maximum input voltage supported by the LTM4661IY#PBF?
A: The LTM4661IY#PBF can accept input voltages up to 5.5V.
Q: Can the output voltage of the LTM4661IY#PBF be adjusted?
A: Yes, the output voltage of the LTM4661IY#PBF is adjustable within the range of 1.2V to 15V.
Q: Does the LTM4661IY#PBF include a synchronous rectifier?
A: Yes, the LTM4661IY#PBF features a synchronous rectifier for improved efficiency.
Q: What is the typical switching frequency of the LTM4661IY#PBF?
A: The LTM4661IY#PBF operates at a switching frequency of 1MHz for efficient power conversion.
Q: Is the LTM4661IY#PBF compliant with RoHS regulations?
A: Yes, the LTM4661IY#PBF is RoHS3 compliant for environmental sustainability.
In conclusion, the LTM4661IY#PBF DC-DC switching regulator offers a compact, efficient, and versatile solution for power management in a wide range of electronic applications. With its high performance, adjustable output voltage, and synchronous rectification, this regulator is suitable for various primary and secondary applications in the electronics industry. Designers and engineers can benefit from the reference designs, alternative parts, and FAQs provided in this article to effectively integrate the LTM4661IY#PBF into their projects.
Specifications
- TypeParameter
- Factory Lead Time12 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.
25-PowerBBGA Module - Number of Pins25
- 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 TJ - 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.
Tray - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
PRODUCTION (Last Updated: 1 month ago) - 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
4 (72 Hours) - 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.
LTM4661 - 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-Up - 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.
5.5V - 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.
0.7V - 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 - 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.
1.2V - 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.
Boost - 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.
1MHz - 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).
Yes - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
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Datasheet PDF
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