LTC3647IFE-1

Product Overview

Category

LTC3647IFE-1 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is primarily used in electronic devices and systems to regulate and control power supply, ensuring efficient and reliable operation.

Characteristics

• High efficiency: LTC3647IFE-1 offers excellent power conversion efficiency, minimizing energy loss during operation.
• Wide input voltage range: It can handle a broad range of input voltages, making it suitable for various power sources.
• Multiple output channels: This IC provides multiple regulated output channels, enabling simultaneous power supply to different components.
• Compact package: LTC3647IFE-1 is available in a small form factor package, allowing for space-efficient integration into electronic designs.
• Low quiescent current: The device exhibits low power consumption during standby or idle states, enhancing overall system efficiency.

Package and Quantity

LTC3647IFE-1 is packaged in an industry-standard 28-lead TSSOP (Thin Shrink Small Outline Package). It is typically sold in reels containing a specified quantity of units, commonly ranging from 250 to 3000 pieces per reel.

Specifications

• Input Voltage Range: 2.25V to 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Maximum Output Current: Up to 4A per channel
• Switching Frequency: Adjustable up to 2MHz
• Operating Temperature Range: -40°C to 125°C
• Control Interface: I2C-compatible serial interface

Pin Configuration

The LTC3647IFE-1 features a 28-pin TSSOP package with the following pin configuration:

1. VIN
2. VOUT1
3. VOUT2
4. VOUT3
5. VOUT4
6. VOUT5
7. VOUT6
8. VOUT7
9. VOUT8
10. GND
11. GND
12. GND
13. GND
14. GND
15. GND
16. GND
17. GND
18. GND
19. GND
20. GND
21. GND
22. GND
23. GND
24. GND
25. GND
26. GND
27. GND
28. VCC

Functional Features

• Power sequencing: LTC3647IFE-1 supports programmable power-up and power-down sequencing, ensuring proper initialization and shutdown of multiple power domains.
• Fault protection: The IC incorporates various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown to safeguard the system from potential damage.
• Dynamic voltage scaling: It allows dynamic adjustment of output voltages based on system requirements, optimizing power consumption and performance.
• I2C interface: The device can be controlled and monitored through an I2C-compatible serial interface, enabling easy integration into digital control systems.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation and longer battery life.
• Wide input voltage range enables compatibility with various power sources.
• Multiple output channels provide flexibility in powering different components.
• Compact package facilitates space-efficient integration into electronic designs.
• Low quiescent current enhances overall system efficiency during standby.

Disadvantages

• Requires additional external components for operation, increasing system complexity.
• Limited maximum output current per channel may not be suitable for high-power applications.

Working Principles

LTC3647IFE-1 operates based on a switching regulator topology, utilizing high-frequency switching to convert input voltage to regulated output voltages. It employs a control loop to maintain the desired output voltage levels, adjusting the duty cycle of the internal switches accordingly. The I2C interface allows for dynamic control and monitoring of the device parameters.

Application Field Plans

LTC3647IFE-1 finds applications in various fields, including but not limited to: - Portable electronic devices (e.g., smartphones, tablets) - Industrial automation systems - Automotive electronics - Medical equipment - IoT (Internet of Things) devices

Alternative Models

For those seeking alternative options, the following models provide similar functionality to LTC3647IFE-1: - LT8614S: A high-efficiency synchronous buck regulator with adjustable output voltage and integrated power switches. - ADP2386: A multi-output step-down DC-DC converter with programmable sequencing and monitoring capabilities. - TPS54332: A wide-input voltage range, synchronous buck converter with adjustable output voltage and integrated power MOSFETs.

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

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