LTC3614MPUDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Low Quiescent Current - Wide Input Voltage Range - Adjustable Output Voltage - Synchronous Rectification - Overcurrent Protection - Thermal Shutdown

Package: 16-Lead QFN (Quad Flat No-Lead)

Essence: The LTC3614MPUDD#TRPBF is a high-efficiency, low quiescent current synchronous buck regulator. It is designed to provide a regulated output voltage from a wide input voltage range.

Packaging/Quantity: The LTC3614MPUDD#TRPBF is available in a 16-Lead QFN package. The quantity per reel is typically 2500 pieces.

Specifications

• Input Voltage Range: 2.25V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 4A
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3614MPUDD#TRPBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switch Node
4. FB: Feedback Voltage
5. EN: Enable Pin
6. SS: Soft-Start
7. VCC: Internal Regulator Output
8. PGND: Power Ground
9. BST: Bootstrap Capacitor Connection
10. LX: Inductor Connection
11. COMP: Compensation Node
12. SS/TRK: Soft-Start/Tracking
13. VOUT: Output Voltage
14. VSET: Output Voltage Programming
15. AGND: Analog Ground
16. PG: Power Good Indicator

Functional Features

• High Efficiency: The LTC3614MPUDD#TRPBF utilizes synchronous rectification to achieve high efficiency, minimizing power losses.
• Low Quiescent Current: The regulator has a low quiescent current, reducing power consumption during standby or light load conditions.
• Wide Input Voltage Range: It can accept input voltages ranging from 2.25V to 5.5V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range to meet specific requirements.
• Overcurrent Protection: The LTC3614MPUDD#TRPBF incorporates overcurrent protection to safeguard against excessive current flow.
• Thermal Shutdown: It features thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - High efficiency operation - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal protection

Disadvantages: - Limited maximum output current (4A)

Working Principles

The LTC3614MPUDD#TRPBF is a synchronous buck regulator that converts a higher input voltage to a lower output voltage. It uses pulse-width modulation (PWM) to control the switching of the internal power MOSFETs. The high-side and low-side MOSFETs alternate conduction to regulate the output voltage.

During each switching cycle, energy is stored in the inductor when the high-side MOSFET is on. When the high-side MOSFET turns off, the energy is transferred to the output through the diode and the low-side MOSFET. By adjusting the duty cycle of the switching signal, the output voltage can be regulated.

Detailed Application Field Plans

The LTC3614MPUDD#TRPBF is commonly used in various applications, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial equipment - Automotive electronics - Distributed power systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LTC3614MPUDD#TRPBF are: - LT8614S: Synchronous Step-Down Regulator - LT8615: 42V, 4A Synchronous Step-Down Regulator - LT8616: 42V, 3.5A Synchronous Step-Down Regulator - LT8617: 42V, 2.5A Synchronous Step-Down Regulator

These alternative models offer similar features and functionality, providing flexibility in choosing the most suitable solution for specific applications.

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