規格
| 屬性 | 價值 |
| Package / Case | Tray |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.4V |
| Voltage - Input (Max) | 65V |
| Voltage - Output (Min/Fixed) | 0.97V |
| Voltage - Output (Max) | 12V |
| Current - Output | 8A |
| Frequency - Switching | 200kHz ~ 2.2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概述
Description
The LT8645SEV#PBF is a high-efficiency monolithic step-down switching regulator designed by Analog Devices. It delivers up to 8A of continuous output current while maintaining high efficiency, even at low output voltages. The device operates from an input voltage range of 3.4V to 65V, making it suitable for a wide range of applications, including automotive, industrial, and communications systems.
Key features include a fast switching frequency of up to 1MHz, enabling the use of smaller inductors and capacitors for compact designs. Its Silent Switcher® architecture minimizes EMI, making it ideal for noise-sensitive environments. The LT8645SEV#PBF also offers a low dropout performance, which allows for longer battery life in portable applications.
Additional features include a low quiescent current of 2.5μA during operation, programmable undervoltage lockout (UVLO), and thermal shutdown protection. The device comes in a compact 4mm x 5mm QFN package with exposed pads for better thermal performance. Overall, the LT8645SEV#PBF is an efficient, versatile solution for various power management needs.
Key features include a fast switching frequency of up to 1MHz, enabling the use of smaller inductors and capacitors for compact designs. Its Silent Switcher® architecture minimizes EMI, making it ideal for noise-sensitive environments. The LT8645SEV#PBF also offers a low dropout performance, which allows for longer battery life in portable applications.
Additional features include a low quiescent current of 2.5μA during operation, programmable undervoltage lockout (UVLO), and thermal shutdown protection. The device comes in a compact 4mm x 5mm QFN package with exposed pads for better thermal performance. Overall, the LT8645SEV#PBF is an efficient, versatile solution for various power management needs.
Equivalent
The LT8645SEV#PBF is a high efficiency synchronous step-down regulator. Equivalent products include:
1. Texas Instruments LM73605-Q1 - A step-down buck regulator with similar voltage and current specifications.
2. Microchip Technology MIC28514 - Offers comparable input voltage range and output current.
3. Maxim Integrated MAX20004 - A synchronous buck converter with similar efficiency and output capabilities.
4. Infineon TLF50201EL - Provides similar functional characteristics for automotive applications.
These alternatives may vary slightly in features and specifications, so ensure compatibility with your design requirements.
1. Texas Instruments LM73605-Q1 - A step-down buck regulator with similar voltage and current specifications.
2. Microchip Technology MIC28514 - Offers comparable input voltage range and output current.
3. Maxim Integrated MAX20004 - A synchronous buck converter with similar efficiency and output capabilities.
4. Infineon TLF50201EL - Provides similar functional characteristics for automotive applications.
These alternatives may vary slightly in features and specifications, so ensure compatibility with your design requirements.
Features
The LT8645SEV#PBF is a high-efficiency, monolithic step-down switching regulator from Analog Devices. Key features include:
1. Wide Input Voltage Range: Operates from a 3V to 65V input voltage, making it suitable for a variety of applications, including automotive and industrial systems.
2. High Efficiency: Offers up to 96% efficiency, minimizing heat generation and allowing for smaller thermal management components.
3. Fast Transient Response: The device provides fast transient response to line and load changes due to its constant frequency and current mode operation.
4. Low Quiescent Current: Features a low quiescent current of 2.5 µA in Burst Mode operation, which is ideal for battery-operated systems.
5. Adjustable Frequency: Allows for a programmable switching frequency from 200 kHz to 2.2 MHz, enabling optimization of efficiency and external component size.
6. Compact Size: Available in a thermally enhanced 24-lead 4mm x 4mm QFN package, which conserves board space.
7. Protection Features: Includes overvoltage, overcurrent, and thermal shutdown protection to enhance reliability.
These features make the LT8645SEV#PBF a versatile choice for high-performance power management applications.
1. Wide Input Voltage Range: Operates from a 3V to 65V input voltage, making it suitable for a variety of applications, including automotive and industrial systems.
2. High Efficiency: Offers up to 96% efficiency, minimizing heat generation and allowing for smaller thermal management components.
3. Fast Transient Response: The device provides fast transient response to line and load changes due to its constant frequency and current mode operation.
4. Low Quiescent Current: Features a low quiescent current of 2.5 µA in Burst Mode operation, which is ideal for battery-operated systems.
5. Adjustable Frequency: Allows for a programmable switching frequency from 200 kHz to 2.2 MHz, enabling optimization of efficiency and external component size.
6. Compact Size: Available in a thermally enhanced 24-lead 4mm x 4mm QFN package, which conserves board space.
7. Protection Features: Includes overvoltage, overcurrent, and thermal shutdown protection to enhance reliability.
These features make the LT8645SEV#PBF a versatile choice for high-performance power management applications.
Pinout
The LT8645SEV#PBF is a 42V, 8A synchronous step-down regulator from Analog Devices. It comes in a 3mm x 4mm LQFN (Leadless Quad Flat No-leads) package with a 24-pin count.
Key functions and features include:
- A wide input voltage range of 3.4V to 42V.
- A maximum output current of 8A.
- High efficiency due to synchronous rectification.
- A fast switching frequency, which can be adjusted from 200kHz to 3MHz.
- A low dropout under all conditions, allowing for a smaller solution size.
- Silent Switcher® architecture reduces EMI emissions.
- An integrated boost diode.
- Internal compensation for ease of design.
- Soft-start capability to control the inrush current.
- Protection features like overcurrent protection, thermal shutdown, and a power good indicator.
These features make the LT8645SEV#PBF suitable for automotive, industrial, and communication applications where efficiency and compactness are paramount.
Key functions and features include:
- A wide input voltage range of 3.4V to 42V.
- A maximum output current of 8A.
- High efficiency due to synchronous rectification.
- A fast switching frequency, which can be adjusted from 200kHz to 3MHz.
- A low dropout under all conditions, allowing for a smaller solution size.
- Silent Switcher® architecture reduces EMI emissions.
- An integrated boost diode.
- Internal compensation for ease of design.
- Soft-start capability to control the inrush current.
- Protection features like overcurrent protection, thermal shutdown, and a power good indicator.
These features make the LT8645SEV#PBF suitable for automotive, industrial, and communication applications where efficiency and compactness are paramount.
Manufacturer
The LT8645SEV#PBF is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company provides a wide range of products and solutions used in various electronic equipment, serving industries such as industrial, automotive, communications, healthcare, and consumer electronics. ADI is known for its high-performance analog technology and solutions that enhance the performance and efficiency of electronic systems.
Application
The LT8645SEV#PBF is a high-efficiency, monolithic step-down regulator. Its application areas include automotive systems, industrial power supplies, telecommunications, and distributed power architectures. It is suitable for applications requiring high-performance power conversion with low noise, such as infotainment systems, advanced driver-assistance systems (ADAS), and Internet of Things (IoT) devices. Its fast switch operation, low quiescent current, and ability to deliver up to 8A of continuous output current make it ideal for battery-powered devices and systems requiring high efficiency across a wide range of input voltages.
Package
The LT8645SEV#PBF is a voltage regulator in a 32-lead plastic package with exposed pad (ePad) for surface mount technology. It typically comes in a compact, thermally enhanced QFN (Quad Flat No-leads) package, designed for high-performance and efficient thermal dissipation.
