LTC3719EG#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Synchronous Buck-Boost DC/DC Converter
• Package: 38-Lead Plastic QFN (5mm x 7mm)
• Essence: LTC3719EG#PBF is a versatile and efficient power management IC designed for various applications requiring a wide input voltage range.
• Packaging/Quantity: Available in tape and reel packaging with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.25V to 18V
• Output Voltage Range: 0.8V to VIN
• Switching Frequency: Up to 2MHz
• Maximum Output Current: Up to 10A
• Efficiency: Up to 98%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3719EG#PBF features a 38-lead plastic QFN package with the following pin configuration:

1. VCC
2. GND
3. FB
4. SS
5. SYNC/SSM
6. MODE
7. PGOOD
8. VOUT
9. SW
10. SW
11. SW
12. SW
13. SW
14. SW
15. SW
16. SW
17. SW
18. SW
19. SW
20. SW
21. SW
22. SW
23. SW
24. SW
25. SW
26. SW
27. SW
28. SW
29. SW
30. SW
31. SW
32. SW
33. SW
34. SW
35. SW
36. SW
37. SW
38. SW

Functional Features

• Wide input voltage range allows for flexibility in various applications.
• Synchronous buck-boost architecture enables efficient power conversion.
• High switching frequency enables the use of smaller external components.
• Integrated power MOSFETs simplify the design and reduce board space requirements.
• Adjustable output voltage and current limit provide versatility in different scenarios.
• Soft-start and tracking features ensure smooth startup and shutdown operations.
• Fault protection mechanisms, such as overvoltage and overcurrent protection, enhance system reliability.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power dissipation and longer battery life.
• Wide input voltage range accommodates a variety of power sources.
• Compact package size saves board space.
• Integrated power MOSFETs simplify the design process.
• Comprehensive fault protection mechanisms enhance system reliability.

Disadvantages

• Limited maximum output current compared to some other power management ICs.
• Higher cost compared to non-integrated solutions.

Working Principles

The LTC3719EG#PBF is a synchronous buck-boost DC/DC converter that utilizes a combination of high-side and low-side power MOSFETs to efficiently regulate the output voltage. It operates by adjusting the duty cycle of the internal switches to maintain the desired output voltage regardless of the input voltage fluctuations. The integrated control circuitry ensures stable and accurate regulation while providing various protection features.

Detailed Application Field Plans

The LTC3719EG#PBF can be applied in a wide range of fields, including but not limited to:

1. Portable electronic devices: Provides efficient power management for smartphones, tablets, and wearable devices.
2. Industrial equipment: Suitable for powering sensors, actuators, and control systems in industrial automation.
3. Automotive electronics: Enables efficient power conversion for automotive infotainment systems, lighting, and advanced driver-assistance systems (ADAS).
4. Renewable energy systems: Facilitates power conversion in solar panels, wind turbines, and energy storage systems.
5. Telecommunications: Ideal for powering base stations, routers, and network equipment.

Detailed and Complete Alternative Models

1. LTC3780EG#PBF: Similar to LTC3719EG#PBF but with a higher maximum output current of 15A.
2. LT8390MPMSE#PBF: A synchronous buck-boost DC/DC converter with an extended input voltage range up to 60V.
3. LTC3112EFE#PBF: A compact synchronous buck-boost converter with integrated power MOSFETs and a wide input voltage range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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