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規格
| 屬性 | 價值 |
| Package / Case | TSSOP-16 |
| Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature | + 125 C |
| Series | LT3431 |
| Brand | Analog Devices |
| Product Type | Switching Voltage Regulators |
| Subcategory | PMIC - Power Management ICs |
| Mounting Style | SMD/SMT |
| Shipping Restrictions | Mouser does not presently sell this product in your region. |
| Operating Supply Current | 2.5 mA |
| Topology | Buck |
| Output Voltage | Adjustable |
| Output Current | 2.75 A |
| Number of Outputs | 1 Output |
| Input Voltage - Min | 5.5 V |
| Input Voltage - Max | 60 V |
| Switching Frequency | 500 kHz |
| Height | 1.1 mm |
概述
Description
The LT3431IFE is a highly integrated, high-performance synchronous step-down DC-DC converter designed by Analog Devices. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for various power applications, including automotive, industrial, and telecommunications. The device is known for its ability to deliver high efficiency and output current, often exceeding 2A, while minimizing heat generation.
Key features include a small footprint, built-in power switches, and a low quiescent current, which is advantageous for battery-powered applications. The LT3431IFE also offers adjustable output voltage and numerous protection features, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation.
Additionally, it supports various operating modes, including pulse frequency modulation and burst mode, to optimize efficiency under varying load conditions. Overall, the LT3431IFE is a robust solution for designers seeking a compact, efficient, and versatile DC-DC converter for their power management needs.
Key features include a small footprint, built-in power switches, and a low quiescent current, which is advantageous for battery-powered applications. The LT3431IFE also offers adjustable output voltage and numerous protection features, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation.
Additionally, it supports various operating modes, including pulse frequency modulation and burst mode, to optimize efficiency under varying load conditions. Overall, the LT3431IFE is a robust solution for designers seeking a compact, efficient, and versatile DC-DC converter for their power management needs.
Equivalent
The LT3431IFE chip is a high-efficiency, step-up DC-DC converter. Equivalent products include the Texas Instruments TPS61040, Analog Devices ADP1613, and the Microchip MCP1640. These alternatives offer similar functionalities for boosting voltage in various applications. Always check specific data sheets for detailed specifications to ensure compatibility.
Features
The LT3431IFE is a high-performance, step-down DC/DC converter designed for applications requiring high efficiency and compact size. Key features include:
1. Wide Input Voltage Range: Accepts input voltages from 3.6V to 60V, making it suitable for a variety of power sources.
2. High Efficiency: Delivers efficiencies up to 95%, reducing heat generation and improving overall performance.
3. Output Current Capability: Supports output currents up to 2A.
4. Adjustable Output Voltage: Features an adjustable output voltage range from 0.8V to 15V.
5. Simple Compensated Control Loop: Ensures stable operation across a wide range of loads and input voltages.
6. Overvoltage and Overcurrent Protection: Enhances reliability and protects against fault conditions.
7. Small Package Size: Available in a compact 20-lead HTSSOP package, facilitating space-constrained designs.
8. Low Quiescent Current: Minimizes power consumption in low-load scenarios.
These features make the LT3431IFE ideal for industrial, automotive, and consumer electronic applications.
1. Wide Input Voltage Range: Accepts input voltages from 3.6V to 60V, making it suitable for a variety of power sources.
2. High Efficiency: Delivers efficiencies up to 95%, reducing heat generation and improving overall performance.
3. Output Current Capability: Supports output currents up to 2A.
4. Adjustable Output Voltage: Features an adjustable output voltage range from 0.8V to 15V.
5. Simple Compensated Control Loop: Ensures stable operation across a wide range of loads and input voltages.
6. Overvoltage and Overcurrent Protection: Enhances reliability and protects against fault conditions.
7. Small Package Size: Available in a compact 20-lead HTSSOP package, facilitating space-constrained designs.
8. Low Quiescent Current: Minimizes power consumption in low-load scenarios.
These features make the LT3431IFE ideal for industrial, automotive, and consumer electronic applications.
Pinout
The LT3431IFE is a high-performance synchronous step-down DC/DC converter with a pin count of 20. It features a wide input voltage range and is designed for high efficiency.
The primary functions of its pins include:
1. VIN (Power Input): Supplies power to the IC.
2. SW (Switch Node): Connects to the internal switching MOSFETs.
3. GND (Ground): Common ground reference.
4. VOUT (Output Voltage): Provides the regulated output voltage.
5. COMP (Compensation): For frequency compensation.
6. FB (Feedback): Connects to the output voltage divider for regulation.
7. SS (Soft Start): Controls the soft start function to limit inrush current.
8. SYNC (Synchronization): Allows synchronization to an external clock.
9. ILIM (Current Limit): Sets the current limit threshold.
10. PG (Power Good): Indicates the output is within regulation.
Other pins include those for enabling/disabling the device, switching frequency adjustment, and other control functions. The LT3431IFE is suitable for a variety of applications requiring efficient voltage regulation.
The primary functions of its pins include:
1. VIN (Power Input): Supplies power to the IC.
2. SW (Switch Node): Connects to the internal switching MOSFETs.
3. GND (Ground): Common ground reference.
4. VOUT (Output Voltage): Provides the regulated output voltage.
5. COMP (Compensation): For frequency compensation.
6. FB (Feedback): Connects to the output voltage divider for regulation.
7. SS (Soft Start): Controls the soft start function to limit inrush current.
8. SYNC (Synchronization): Allows synchronization to an external clock.
9. ILIM (Current Limit): Sets the current limit threshold.
10. PG (Power Good): Indicates the output is within regulation.
Other pins include those for enabling/disabling the device, switching frequency adjustment, and other control functions. The LT3431IFE is suitable for a variety of applications requiring efficient voltage regulation.
Manufacturer
The LT3431IFE is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company specializes in providing innovative solutions for various markets, including automotive, communications, industrial automation, healthcare, and consumer electronics. Established in 1965, ADI focuses on high-performance components that enable advancements in technology and improve efficiency and functionality across a wide range of applications. The LT3431IFE is a versatile, high-voltage, step-down (buck) switching regulator that is part of ADI's extensive portfolio of power management solutions, showcasing the company's expertise in delivering reliable and efficient electronic components.
Application
The LT3431IFE is a high-performance, synchronous step-down DC-DC converter primarily used in applications requiring efficient power management. Key application areas include power supplies for embedded systems, battery-powered devices, and portable electronics. It is also suitable for use in automotive power management, industrial equipment, and telecom systems. The converter's ability to deliver high output current while maintaining low quiescent current makes it ideal for applications demanding energy efficiency and thermal performance. Additionally, it can be employed in FPGA and DSP power supplies, providing reliable voltage regulation in demanding environments.
Package
The LT3431IFE is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package). This surface-mount package is designed for compact applications, providing efficient thermal performance and space-saving benefits.