LTC3643EUDD

Product Overview

Category

LTC3643EUDD belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is commonly used in various electronic devices and systems to efficiently regulate and control power supply voltages.

Characteristics

• High efficiency power conversion
• Wide input voltage range
• Low quiescent current
• Adjustable output voltage
• Overcurrent protection
• Thermal shutdown protection

Package

LTC3643EUDD is available in a small form factor, 12-pin dual flat no-lead (DFN) package. This package offers excellent thermal performance and ease of integration into compact designs.

Essence

The essence of LTC3643EUDD lies in its ability to provide reliable and efficient power management solutions for a wide range of applications.

Packaging/Quantity

LTC3643EUDD is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V - 15V
• Output Voltage Range: 0.6V - 14V
• Maximum Output Current: 1A
• Quiescent Current: 20µA
• Switching Frequency: 2MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. SW: Switching node connection
4. FB: Feedback pin for output voltage regulation
5. SS: Soft-start capacitor connection
6. EN: Enable pin for device operation
7. VOUT: Output voltage pin
8. PGND: Power ground reference pin
9. BST: Boost capacitor connection
10. LX: Inductor connection
11. VCC: Supply voltage pin for internal circuitry
12. AGND: Analog ground reference pin

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High efficiency power conversion minimizes energy loss and maximizes battery life.
• Adjustable output voltage enables flexibility in meeting specific system requirements.
• Overcurrent protection safeguards the device and connected components from excessive current.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• High efficiency power conversion reduces energy consumption.
• Wide input voltage range provides versatility in power source selection.
• Compact package size facilitates integration into space-constrained designs.
• Overcurrent and thermal protection enhance system reliability.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Higher switching frequency may introduce additional noise in sensitive circuits.

Working Principles

LTC3643EUDD operates based on a switching regulator topology, utilizing a combination of inductors, capacitors, and switches to efficiently convert input voltage to the desired output voltage. The integrated control circuitry ensures stable and regulated output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

LTC3643EUDD 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 devices

Detailed and Complete Alternative Models

1. LTC3642EUDD: Similar specifications and features, but with a lower maximum output current of 500mA.
2. LTC3644EUDD: Higher maximum output current of 2A, suitable for more demanding applications.
3. LTC3645EUDD: Offers additional features such as adjustable soft-start and power good indicator.

These alternative models provide options for different power requirements and feature preferences, allowing designers to choose the most suitable solution for their specific applications.

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