LTC3785EUF#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Synchronous Buck-Boost DC/DC Converter
• Package: 24-Lead QFN (Quad Flat No-Lead)
• Essence: LTC3785EUF#PBF is a high-performance power management IC designed for various applications requiring efficient voltage conversion.
• Packaging/Quantity: The LTC3785EUF#PBF is available in a 24-Lead QFN package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 38V
• Output Voltage Range: 0.8V to 38V
• Switching Frequency: Up to 550kHz
• Maximum Output Current: Up to 4A
• Efficiency: Up to 98%
• Operating Temperature Range: -40°C to 125°C
• Protection Features: Overvoltage Protection, Undervoltage Lockout, Overcurrent Protection, Thermal Shutdown

Detailed Pin Configuration

The LTC3785EUF#PBF has a total of 24 pins arranged as follows:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switch Node
4. FB: Feedback Voltage
5. SS: Soft-Start
6. SYNC: External Clock Synchronization
7. VCC: Internal Regulator Output
8. PGND: Power Ground
9. VOUT: Output Voltage
10. EN: Enable Pin
11. MODE: Mode Selection
12. RT: Oscillator Timing Resistor
13. CT: Oscillator Timing Capacitor
14. ITH: Current Sense Threshold
15. SS/TR: Soft-Start/Tracking
16. VFB: Feedback Voltage
17. PGND: Power Ground
18. SW: Switch Node
19. GND: Ground
20. VIN: Input Voltage
21. SYNC: External Clock Synchronization
22. VCC: Internal Regulator Output
23. SS/TR: Soft-Start/Tracking
24. EN: Enable Pin

Functional Features

• Synchronous Buck-Boost Conversion: The LTC3785EUF#PBF is capable of converting input voltage to a higher or lower output voltage efficiently.
• Wide Input Voltage Range: It can accept input voltages ranging from 4V to 38V, making it suitable for a wide range of applications.
• High Efficiency: With efficiency up to 98%, the LTC3785EUF#PBF minimizes power losses and maximizes energy conversion.
• Protection Mechanisms: The IC incorporates various protection features such as overvoltage protection, undervoltage lockout, overcurrent protection, and thermal shutdown to ensure safe operation.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - High efficiency reduces power consumption and heat generation. - Compact package size enables space-saving designs. - Comprehensive protection mechanisms enhance reliability.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Requires careful consideration of external components for optimal performance.

Working Principles

The LTC3785EUF#PBF operates based on a synchronous buck-boost topology. It utilizes an internal control loop to regulate the output voltage by adjusting the duty cycle of the switching transistor. By continuously monitoring the feedback voltage, the IC adjusts the duty cycle to maintain the desired output voltage, even when the input voltage varies.

Detailed Application Field Plans

The LTC3785EUF#PBF is widely used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - Telecommunications infrastructure

Detailed and Complete Alternative Models

1. LTC3785IUH#PBF: Similar to LTC3785EUF#PBF but available in a 36-Lead QFN package.
2. LTC3785MPMS8#PBF: Similar functionality in a smaller 8-Lead MSOP package.
3. LTC3785EGN#PBF: Available in a 16-Lead SSOP package with similar specifications.

These alternative models offer flexibility in terms of package options while maintaining the core features and functionality of the LTC3785EUF#PBF.

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