LTC1643ALIGN#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Low power consumption - Small form factor - Wide input voltage range - Multiple output channels

Package: QFN (Quad Flat No-leads)

Essence: The LTC1643ALIGN#TRPBF is a power management IC designed for various applications that require multiple power supply voltages. It provides efficient power conversion and regulation, making it suitable for use in portable electronic devices, industrial equipment, and automotive systems.

Packaging/Quantity: The LTC1643ALIGN#TRPBF is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Number of Outputs: 4
• Output Current: Up to 1A per channel
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC1643ALIGN#TRPBF has a total of 24 pins. Here is the detailed pin configuration:

1. VCC
2. GND
3. EN1
4. EN2
5. EN3
6. EN4
7. FB1
8. FB2
9. FB3
10. FB4
11. SW1
12. SW2
13. SW3
14. SW4
15. LX1
16. LX2
17. LX3
18. LX4
19. PG1
20. PG2
21. PG3
22. PG4
23. SS/TRK
24. REF

Functional Features

• Integrated power switches and control circuitry
• Adjustable output voltages
• Power good (PG) indicators for each channel
• Soft-start and tracking capabilities
• Overcurrent and overtemperature protection
• Low dropout voltage

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Small form factor saves board space - Wide input voltage range allows compatibility with various power sources - Multiple output channels provide flexibility in powering different components - Comprehensive protection features ensure system reliability

Disadvantages: - Limited output current per channel (up to 1A) - Requires external components for proper operation - Higher cost compared to simpler power management solutions

Working Principles

The LTC1643ALIGN#TRPBF operates by converting the input voltage to multiple regulated output voltages using integrated power switches and control circuitry. The adjustable output voltages can be set within a specified range, allowing customization for different application requirements. The IC also includes soft-start and tracking features to ensure smooth power-up and shutdown sequences. Additionally, it incorporates various protection mechanisms to safeguard against overcurrent and overtemperature conditions.

Detailed Application Field Plans

The LTC1643ALIGN#TRPBF finds applications in a wide range of electronic devices and systems, including but not limited to: - Portable electronic devices (e.g., smartphones, tablets, portable gaming consoles) - Industrial equipment (e.g., factory automation systems, motor drives) - Automotive systems (e.g., infotainment systems, advanced driver-assistance systems)

Detailed and Complete Alternative Models

• LTC1642ALIGN#TRPBF
• LTC1644ALIGN#TRPBF
• LTC1645ALIGN#TRPBF
• LTC1646ALIGN#TRPBF

These alternative models offer similar functionality and characteristics to the LTC1643ALIGN#TRPBF, providing options for different design requirements and preferences.

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