A Comprehensive Guide to LTC7812EUH#PBF DC DC Switching Controller
Linear Technology/Analog Devices
4.5V~38V LTC7812 DC to DC converter IC 2 Outputs 115kHz~835kHz 350kHz~535kHz Transistor Driver
Unit Price: $24.343014
Ext Price: $24.34









4.5V~38V LTC7812 DC to DC converter IC 2 Outputs 115kHz~835kHz 350kHz~535kHz Transistor Driver
This article provides an in-depth analysis of the LTC7812EUH#PBF DC DC switching controller manufactured by Linear Technology/Analog Devices. It covers the product description, key features, primary and secondary applications, reference designs, alternative parts, and frequently asked questions related to this versatile voltage regulator.
Product Introduction
Description:
The LTC7812EUH#PBF is a high-performance DC DC switching controller designed to provide efficient power management solutions in various electronic applications. It offers step-up and step-down capabilities with two outputs in a positive configuration. With a wide input voltage range of 4.5V to 38V and a maximum duty cycle of up to 99%, this controller is suitable for a diverse range of power supply designs.
Features:
1. Dual output capability for versatile power supply designs
2. Control features include enable, frequency control, power good, soft start, and tracking
3. Buck and boost topology support for flexible voltage regulation
4. Wide switching frequency range for optimization of efficiency and performance
5. ROHS3 compliant for environmental sustainability
Applications:
Primary Applications:
1. Industrial power supplies
2. Automotive electronics
3. Telecommunications equipment
4. Renewable energy systems
Secondary Applications:
1. Consumer electronics
2. Medical devices
3. LED lighting
4. Power over Ethernet (PoE) systems
Applicable Specific Modules:
1. Power distribution modules
2. Battery charging modules
3. LED driver modules
4. Motor control modules
Reference Designs:
1. High-efficiency industrial power supply using LTC7812EUH#PBF
2. Automotive voltage regulator design with LTC7812EUH#PBF
3. Telecom rectifier module utilizing LTC7812EUH#PBF
Alternative Parts:
1. LTC7813EUH#PBF - Similar features with different output configurations
2. LT8610ABEUHF#PBF - Lower input voltage range with comparable performance
3. LTC3789EUH#PBF - Higher output current capability for demanding applications
FAQs:
Q: What is the maximum duty cycle supported by the LTC7812EUH#PBF?
A: The LTC7812EUH#PBF can achieve a maximum duty cycle of up to 99%, allowing for efficient voltage regulation in various scenarios.
Q: Does the LTC7812EUH#PBF support synchronous rectification?
A: No, the LTC7812EUH#PBF does not feature synchronous rectification but offers high efficiency through its advanced control features.
Q: Can the LTC7812EUH#PBF be used in automotive applications?
A: Yes, the LTC7812EUH#PBF is suitable for automotive electronics due to its wide input voltage range and robust design.
In conclusion, the LTC7812EUH#PBF DC DC switching controller stands out as a reliable and versatile solution for power management in a wide range of electronic devices and systems. Its advanced features, broad applications, and compatibility with various modules make it a preferred choice for engineers seeking efficient voltage regulation solutions.
Specifications
- TypeParameter
- Factory Lead Time8 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.
32-WFQFN Exposed Pad - 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.
Tube - Published2015
- 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) - 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.
LTC7812 - 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, Step-Down - Number of Outputs2
- 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.
Transistor Driver - 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 - Supply (Vcc/Vdd)
Voltage - Supply (Vcc/Vdd) is a key parameter in electronic components that specifies the voltage level required for the proper operation of the device. It represents the power supply voltage that needs to be provided to the component for it to function correctly. This parameter is crucial as supplying the component with the correct voltage ensures that it operates within its specified limits and performance characteristics. It is typically expressed in volts (V) and is an essential consideration when designing and using electronic circuits to prevent damage and ensure reliable operation.
4.5V~38V - 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, Frequency Control, Power Good, Soft Start, Tracking - 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, 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.
115kHz~835kHz 350kHz~535kHz - 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 - Duty Cycle (Max)
The "Duty Cycle (Max)" parameter in electronic components refers to the maximum percentage of time that a signal is active or on within a specific period. It is commonly used in components such as pulse-width modulation (PWM) controllers, oscillators, and timers. A duty cycle of 100% means the signal is always on, while a duty cycle of 0% means the signal is always off. Understanding the maximum duty cycle is important for ensuring proper operation and performance of the electronic component within its specified limits. It is typically expressed as a percentage and helps determine the amount of power or energy being delivered by the signal.
96%, 99% - Output Phases
Output Phases in electronic components refer to the number of distinct output signals or waveforms that the component can generate. This parameter is commonly associated with devices such as power inverters, motor drives, and signal generators. The output phases indicate how many separate signals can be produced simultaneously by the component, with each phase typically representing a different electrical waveform or signal. Understanding the output phases of an electronic component is important for designing and implementing systems that require multiple output signals or for ensuring compatibility with other components in a circuit.
1 - 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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Linear Technology/Analog Devices
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