仕様
| 属性 | 値 |
| Package / Case | Tube |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 15V |
| Current - Output | 1A |
| Frequency - Switching | 200kHz ~ 3MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The LTC3646EDE-1 is a high-efficiency, step-down DC/DC converter specifically designed for compact applications requiring minimal external components. It operates at a fixed frequency of 2.25MHz, allowing for a reduced inductor size and a smaller overall circuit footprint. The device is capable of delivering up to 1A of continuous output current from input voltages ranging from 3.6V to 20V, catering to a variety of power supply applications.
One of its standout features is the Burst Mode operation, which enhances efficiency at light loads by minimizing switching losses. This makes it ideal for battery-operated devices where energy conservation is crucial. The LTC3646EDE-1 also employs a current-mode control system, providing fast transient response and simple loop compensation.
Additional features include a precise enable threshold for power sequencing, a soft-start capability to limit inrush current during startup, and thermal protection to safeguard the device under high-temperature conditions. The compact 3mm x 3mm DFN package further facilitates space-saving designs.
One of its standout features is the Burst Mode operation, which enhances efficiency at light loads by minimizing switching losses. This makes it ideal for battery-operated devices where energy conservation is crucial. The LTC3646EDE-1 also employs a current-mode control system, providing fast transient response and simple loop compensation.
Additional features include a precise enable threshold for power sequencing, a soft-start capability to limit inrush current during startup, and thermal protection to safeguard the device under high-temperature conditions. The compact 3mm x 3mm DFN package further facilitates space-saving designs.
Equivalent
The LTC3646EDE-1 is a synchronous step-down DC/DC converter. Equivalent products can include:
1. Texas Instruments TPS54360: A 60V, 3.5A step-down regulator.
2. Microchip Technology MCP16331: A high-voltage buck converter.
3. ON Semiconductor NCP3063: A switching regulator with similar functionality.
4. Maxim Integrated MAX17502: An efficient, high-voltage synchronous step-down converter.
When selecting equivalents, verify specifications like input voltage range, output current, and switching frequency to ensure compatibility with your application.
1. Texas Instruments TPS54360: A 60V, 3.5A step-down regulator.
2. Microchip Technology MCP16331: A high-voltage buck converter.
3. ON Semiconductor NCP3063: A switching regulator with similar functionality.
4. Maxim Integrated MAX17502: An efficient, high-voltage synchronous step-down converter.
When selecting equivalents, verify specifications like input voltage range, output current, and switching frequency to ensure compatibility with your application.
Features
The LTC3646EDE-1 is a high-efficiency, monolithic synchronous step-down regulator from Analog Devices, designed to deliver up to 1A of continuous output current with minimal external components. Key features include:
1. Wide Input Voltage Range: Operates from 3.6V to 20V, accommodating a variety of power sources.
2. Adjustable Output Voltage: Offers an output voltage range from 0.6V to 5V, providing flexibility for different applications.
3. High Efficiency: Achieves efficiencies up to 95%, thanks to synchronous rectification.
4. Low Quiescent Current: Consumes just 40µA in standby mode, suitable for battery-powered applications.
5. Programmable Frequency: Adjustable switching frequency from 500kHz to 4MHz, optimizing size and performance.
6. Internal Compensation: Simplifies design by eliminating the need for external compensation components.
7. Power Good Indicator: Provides a signal when the output voltage is in regulation.
8. Thermal Protection: Features over-temperature protection to prevent damage under excessive thermal conditions.
9. Compact Package: Available in a 3mm x 3mm DFN package, making it suitable for space-constrained designs.
These features make the LTC3646EDE-1 ideal for applications requiring efficient power conversion in a compact form factor.
1. Wide Input Voltage Range: Operates from 3.6V to 20V, accommodating a variety of power sources.
2. Adjustable Output Voltage: Offers an output voltage range from 0.6V to 5V, providing flexibility for different applications.
3. High Efficiency: Achieves efficiencies up to 95%, thanks to synchronous rectification.
4. Low Quiescent Current: Consumes just 40µA in standby mode, suitable for battery-powered applications.
5. Programmable Frequency: Adjustable switching frequency from 500kHz to 4MHz, optimizing size and performance.
6. Internal Compensation: Simplifies design by eliminating the need for external compensation components.
7. Power Good Indicator: Provides a signal when the output voltage is in regulation.
8. Thermal Protection: Features over-temperature protection to prevent damage under excessive thermal conditions.
9. Compact Package: Available in a 3mm x 3mm DFN package, making it suitable for space-constrained designs.
These features make the LTC3646EDE-1 ideal for applications requiring efficient power conversion in a compact form factor.
Pinout
The LTC3646EDE-1 is a high-efficiency, monolithic synchronous step-down regulator with a fixed 16V/20V input voltage capability. It is designed to deliver up to 6A of output current. The chip is available in a thermally enhanced 12-lead (3mm x 4mm) DFN package. Its pin count is 12.
Key functions of the LTC3646EDE-1 include high efficiency over a wide load range, low quiescent current in Burst Mode® operation, and fast transient response. It features an adjustable switching frequency, programmable by an external resistor, and supports applications that require a low output voltage ripple. The regulator also includes features like internal compensation, soft-start, and a power good output signal. It is designed for use in a variety of applications, including industrial power systems, distributed power systems, and high-efficiency step-down conversion.
Key functions of the LTC3646EDE-1 include high efficiency over a wide load range, low quiescent current in Burst Mode® operation, and fast transient response. It features an adjustable switching frequency, programmable by an external resistor, and supports applications that require a low output voltage ripple. The regulator also includes features like internal compensation, soft-start, and a power good output signal. It is designed for use in a variety of applications, including industrial power systems, distributed power systems, and high-efficiency step-down conversion.
Manufacturer
The LTC3646EDE-1 is manufactured by Analog Devices, Inc. Analog Devices is a multinational company that specializes in the design and manufacturing of semiconductor devices, with a focus on analog, mixed-signal, and digital signal processing technologies. The company provides a wide range of products used in various applications across industries such as telecommunications, automotive, industrial automation, healthcare, and consumer electronics. These products include amplifiers, data converters, power management solutions, radio frequency (RF) ICs, sensors, and embedded processing products. Analog Devices is known for its high-performance, innovative solutions that enable customers to solve complex engineering challenges.
Application
The LTC3646EDE-1 is a high-efficiency, step-down DC/DC converter designed for a wide range of applications. Key application areas include point-of-load power supplies, battery-powered devices, distributed power systems, and industrial or telecom systems requiring efficient power management. Its compact design and high switching frequency make it suitable for space-constrained applications, while its wide input voltage range supports various power sources. It's also ideal for scenarios requiring precise voltage regulation and high power conversion efficiency, such as in portable electronics, automotive systems, and communication equipment.
Package
The LTC3646EDE-1 is available in a 12-lead (4mm x 3mm) DFN (Dual Flat No-Lead) package.
