LTC3737EUF#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Wide Input Voltage Range - Adjustable Output Voltage - Synchronous Buck-Boost Topology

Package: 4x5mm QFN-24

Essence: The LTC3737EUF#PBF is a high-performance integrated circuit designed for power management applications. It offers a wide input voltage range and adjustable output voltage, making it suitable for various power supply designs.

Packaging/Quantity: The LTC3737EUF#PBF is available in a 4x5mm QFN-24 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.25V to 20V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 10A
• Switching Frequency: Up to 1MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC3737EUF#PBF has a total of 24 pins. Here is the detailed pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switch Node
4. PGND: Power Ground
5. VOUT: Output Voltage
6. FB: Feedback Voltage
7. SS: Soft-Start
8. SYNC: Synchronization Input
9. CLKOUT: Clock Output
10. CLKIN: Clock Input
11. PGOOD: Power Good Indicator
12. EN: Enable Input
13. MODE: Mode Selection
14. VCC: Supply Voltage
15. AGND: Analog Ground
16. BST: Bootstrap Capacitor Connection
17. SS/TRK: Soft-Start/Tracking
18. VFB: Feedback Voltage
19. VCC2: Secondary Supply Voltage
20. AGND2: Secondary Analog Ground
21. ITH: Current Sense Threshold
22. RT: Oscillator Timing Resistor
23. CT: Oscillator Timing Capacitor
24. CLKOUT2: Secondary Clock Output

Functional Features

The LTC3737EUF#PBF offers the following functional features:

1. Wide Input Voltage Range: The IC can operate with input voltages ranging from 2.25V to 20V, providing flexibility in various power supply applications.
2. Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to VIN, allowing customization based on specific requirements.
3. High Efficiency: With efficiency levels of up to 95%, the LTC3737EUF#PBF minimizes power losses and maximizes energy conversion.
4. Synchronous Buck-Boost Topology: The integrated buck-boost converter topology enables seamless transition between step-up and step-down operation, ensuring stable output voltage regardless of input variations.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility in power supply design. - High efficiency reduces power losses and improves overall system performance. - Synchronous buck-boost topology ensures stable output voltage.

Disadvantages: - Limited maximum output current of 10A may not be suitable for high-power applications. - Complex pin configuration may require careful layout considerations during PCB design.

Working Principles

The LTC3737EUF#PBF operates based on a synchronous buck-boost topology. It utilizes an internal power switch and synchronous rectification to efficiently step-up or step-down the input voltage to the desired output voltage. The feedback loop continuously monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output.

Detailed Application Field Plans

The LTC3737EUF#PBF can be used in various power management applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - Telecom infrastructure

Detailed and Complete Alternative Models

1. LTC3780: Similar functionality with higher maximum output current (up to 15A).
2. LT8390: Buck-boost converter with integrated MPPT for solar power applications.
3. LTC3119: Synchronous buck-boost converter with wide input voltage range and low quiescent current.

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

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