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LT3663EDCB-3.3
IC REG BUCK 3.3V 1.2A 8DFN
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- 製造商。 部分 #LT3663EDCB-3.3
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- 資料表 LT3663EDCB-3.3 DataSheet
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規格
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 7.5V |
| Voltage - Input (Max) | 36V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 1.2A |
| Frequency - Switching | 1MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (2x3) |
| Base Product Number | LT3663 |
概述
Description
The LT3663EDCB-3.3 is a step-down switching regulator designed by Analog Devices. It integrates a high-efficiency 1A power switch, oscillator, and control circuitry into a compact package. The "-3.3" denotes that it outputs a fixed 3.3V voltage. This device operates over a wide input voltage range, making it suitable for various applications involving battery-powered devices or systems with fluctuating supply voltages.
Key features include its ability to maintain high efficiency over a broad load range, with typical applications in distributed power systems, portable electronics, and automotive environments. The LT3663EDCB-3.3 offers protection features such as thermal shutdown, cycle-by-cycle current limiting, and soft-start to prevent inrush current at startup. Its small footprint, combined with a minimal number of external components, makes it an attractive choice for compact designs where space is constrained.
Overall, the LT3663EDCB-3.3 provides a reliable and efficient solution for managing power in applications requiring a stable 3.3V output from a higher voltage source.
Key features include its ability to maintain high efficiency over a broad load range, with typical applications in distributed power systems, portable electronics, and automotive environments. The LT3663EDCB-3.3 offers protection features such as thermal shutdown, cycle-by-cycle current limiting, and soft-start to prevent inrush current at startup. Its small footprint, combined with a minimal number of external components, makes it an attractive choice for compact designs where space is constrained.
Overall, the LT3663EDCB-3.3 provides a reliable and efficient solution for managing power in applications requiring a stable 3.3V output from a higher voltage source.
Features
The LT3663EDCB-3.3 is a high-performance step-down switching regulator specifically designed to provide a regulated 3.3V output. Here are its key features:
1. Input Voltage Range: It supports a wide input voltage range from 4.5V to 36V, making it suitable for a variety of applications, including automotive and industrial systems.
2. Output Current: It can deliver up to 1.2A of continuous output current, effectively powering medium-load applications.
3. Efficiency: The regulator is designed for high efficiency, reaching up to 90%, which helps in reducing power loss and heat generation.
4. Switching Frequency: It operates at a fixed switching frequency of 1MHz, which allows for smaller external components and compact design.
5. Low Dropout Operation: The device features low dropout operation, extending battery life in portable applications.
6. Protection Features: It includes built-in protection mechanisms like thermal shutdown, cycle-by-cycle current limit, and soft-start to prevent damage during fault conditions.
7. Package: The LT3663EDCB-3.3 is available in a compact 3mm × 3mm DFN package, supporting efficient heat dissipation and space-saving designs.
These features make the LT3663EDCB-3.3 a versatile choice for applications requiring reliable 3.3V power delivery.
1. Input Voltage Range: It supports a wide input voltage range from 4.5V to 36V, making it suitable for a variety of applications, including automotive and industrial systems.
2. Output Current: It can deliver up to 1.2A of continuous output current, effectively powering medium-load applications.
3. Efficiency: The regulator is designed for high efficiency, reaching up to 90%, which helps in reducing power loss and heat generation.
4. Switching Frequency: It operates at a fixed switching frequency of 1MHz, which allows for smaller external components and compact design.
5. Low Dropout Operation: The device features low dropout operation, extending battery life in portable applications.
6. Protection Features: It includes built-in protection mechanisms like thermal shutdown, cycle-by-cycle current limit, and soft-start to prevent damage during fault conditions.
7. Package: The LT3663EDCB-3.3 is available in a compact 3mm × 3mm DFN package, supporting efficient heat dissipation and space-saving designs.
These features make the LT3663EDCB-3.3 a versatile choice for applications requiring reliable 3.3V power delivery.
Package
The LT3663EDCB-3.3 is a DC-DC step-down regulator from Analog Devices. It comes in a 3mm x 3mm DFN (Dual Flat No-Lead) package, also known as the DCB package, with exposed pads for better thermal performance.
Pinout
The LT3663EDCB-3.3 is a 3.3V, 1.2A step-down regulator with a pin count of 10. The device is designed to convert higher DC input voltages to a steady 3.3V output, suitable for various applications. The 10 pins are typically allocated for the following functions:
1. VIN: Input voltage supply.
2. SW: Switch node, connects to the inductor.
3. GND: Ground reference for the device.
4. BST: Boost pin for higher efficiency.
5. FB: Feedback pin for output voltage regulation.
6. RT: Sets the oscillator frequency.
7. VOUT: Output voltage.
8. NC (No Connect): Not connected internally, provided for convenience.
9. PG: Power good indicator.
10. EN/UVLO: Enable/Under-voltage Lockout pin.
These functions allow the LT3663EDCB-3.3 to efficiently manage power conversion processes, ensuring stable output for downstream components. Always refer to the specific datasheet for detailed pin configuration and application guidelines.
1. VIN: Input voltage supply.
2. SW: Switch node, connects to the inductor.
3. GND: Ground reference for the device.
4. BST: Boost pin for higher efficiency.
5. FB: Feedback pin for output voltage regulation.
6. RT: Sets the oscillator frequency.
7. VOUT: Output voltage.
8. NC (No Connect): Not connected internally, provided for convenience.
9. PG: Power good indicator.
10. EN/UVLO: Enable/Under-voltage Lockout pin.
These functions allow the LT3663EDCB-3.3 to efficiently manage power conversion processes, ensuring stable output for downstream components. Always refer to the specific datasheet for detailed pin configuration and application guidelines.
Manufacturer
The LT3663EDCB-3.3 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and production of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves a wide range of industries, including industrial, automotive, communications, consumer electronics, and healthcare. Analog Devices is known for its high-performance solutions in areas such as power management, data conversion, signal processing, and RF (radio frequency) technologies.
Application
The LT3663EDCB-3.3 is a step-down switching regulator designed for applications that require high efficiency and compact size. It is commonly used in automotive systems, industrial automation, telecommunications, and portable devices. Its wide input voltage range and fixed 3.3V output make it suitable for powering microcontrollers, sensors, and other low-voltage digital ICs. The regulator's robust performance in harsh environments also makes it ideal for rugged applications.
Equivalent
The LT3663EDCB-3.3 is a step-down switching regulator from Analog Devices. Equivalent products could include the Texas Instruments LM2675M-3.3, the Microchip MIC4680-3.3, and the ON Semiconductor NCP3063, among others. When selecting an equivalent, ensure it matches key specifications such as voltage rating, current output, switching frequency, and package type. Always verify the datasheets for compatibility in your specific application.
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