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Product Specification

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Product Details: LT8609SIV 42V, 2.5A Synchronous Step-Down Regulator

Introduction: The LT8609SIV is a highly versatile synchronous step-down (buck) voltage regulator designed to meet the demanding requirements of modern electronic applications. With a wide input voltage range and high efficiency, this regulator is suitable for a broad spectrum of power management needs, from industrial equipment to automotive systems.

Key Features:

1. Wide Input Voltage Range: The LT8609SIV can handle input voltages ranging from 3.4V to 42V, making it adaptable to various power sources.

2. High Efficiency: This regulator boasts high efficiency levels, reducing power consumption and minimizing heat generation, particularly under heavy load conditions.

3. 2.5A Output Current: With a maximum output current of 2.5A, the LT8609SIV can supply power to a range of components and subsystems within your application.

4. Low Dropout Voltage: The LT8609SIV maintains a low dropout voltage, ensuring stable output even when the input voltage is close to the desired output voltage.

5. Synchronous Operation: Synchronous rectification minimizes power loss and enhances efficiency, especially at light load conditions.

6. Adjustable Output Voltage: The output voltage can be easily adjusted, offering flexibility to suit specific application requirements.

7. Compact Package: Available in a thermally enhanced 16-lead MSOP package, the LT8609SIV offers excellent thermal performance and space efficiency.

Specifications:

• Input Voltage Range: 3.4V to 42V
• Output Voltage Range: Adjustable from 1.242V to VIN x 0.9
• Maximum Output Current: 2.5A
• Switching Frequency: 500kHz (adjustable)
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Applications:

1. Automotive Electronics: The LT8609SIV is well-suited for automotive applications, such as infotainment systems, advanced driver-assistance systems (ADAS), and power supplies for various automotive components.

2. Industrial Equipment: It can be used in a wide range of industrial applications, including factory automation, motor control, and instrumentation.

3. Telecommunications: In telecommunications equipment, this regulator is valuable for providing power to data centers, networking hardware, and base stations.

4. Point-of-Load Regulation: The LT8609SIV can be employed for point-of-load regulation in various systems, including FPGA and microprocessor power supplies.

5. Battery-Powered Devices: Due to its low dropout voltage and high efficiency, it is suitable for battery-powered devices and portable equipment.

Benefits:

• Versatile Voltage Regulation: The LT8609SIV offers wide input and output voltage ranges, making it adaptable to diverse application requirements.

• Efficiency and Thermal Performance: High efficiency and a thermally enhanced package help reduce power dissipation and maintain stable operation.

• Adjustable Output: The ability to adjust the output voltage provides customization and compatibility with different loads.

• Synchronous Rectification: Synchronous operation minimizes power loss and improves efficiency across the entire load range.

• Compact and Easy to Integrate: The 16-lead MSOP package ensures a small footprint and straightforward integration into your PCB layout.

Pin Configuration: The LT8609SIV is available in a 16-lead thermally enhanced MSOP package. The pin configuration is as follows:

1. SS/TR/UVLO
2. VCC
3. GND
4. VOUT
5. VOUT
6. GND
7. VOUT
8. VOUT
9. FB
10. SYNC
11. SS/TR/UVLO
12. GND
13. LX
14. LX
15. GND
16. VIN

Typical Connections: To use the LT8609SIV in your circuit, connect the input voltage (VIN) to Pin 16, GND (ground) to the appropriate pins (2, 3, 6, 12, 15), and configure the output voltage according to your application needs (VOUT on pins 4, 5, 7, 8).

Recommended Operating Conditions:

• Ensure that the input voltage (VIN) is within the specified range of 3.4V to 42V for proper operation.
• The LT8609SIV is designed to operate effectively in a temperature range of -40°C to 125°C.

Conclusion: The LT8609SIV synchronous step-down regulator is a versatile and efficient solution for a wide range of power management applications. With its wide input voltage range, high efficiency, and adjustable output, it provides flexibility and reliability in powering various electronic systems, from automotive electronics to industrial equipment. Its compact and thermally enhanced package ensures ease of integration and excellent thermal performance.

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