MCP1643-I/MC

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Boost Converter
• Characteristics:
  • High Efficiency
  • Low Quiescent Current
  • Wide Input Voltage Range
  • Small Package Size
• Package: SOT-23-6
• Essence: Step-Up DC-DC Converter
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 0.65V to 5.5V
• Output Voltage Range: 1.8V to 5.5V
• Switching Frequency: 500 kHz
• Maximum Output Current: 400 mA
• Shutdown Current: 0.1 µA (typical)

Detailed Pin Configuration

The MCP1643-I/MC has a total of six pins arranged as follows:

```

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| | --| VIN SW |-- --| GND FB |-- --| EN VOUT|-- |___________| ```

• VIN: Input voltage pin
• SW: Switch node pin
• GND: Ground pin
• FB: Feedback voltage pin
• EN: Enable pin
• VOUT: Output voltage pin

Functional Features

• High Efficiency: The MCP1643-I/MC offers high efficiency conversion, minimizing power losses.
• Low Quiescent Current: It has a low quiescent current, reducing power consumption during standby or idle periods.
• Wide Input Voltage Range: The IC can operate with input voltages ranging from 0.65V to 5.5V, providing flexibility in various applications.
• Small Package Size: The SOT-23-6 package is compact, making it suitable for space-constrained designs.

Advantages and Disadvantages

Advantages: - High efficiency conversion - Low quiescent current - Wide input voltage range - Small package size

Disadvantages: - Limited maximum output current (400 mA)

Working Principles

The MCP1643-I/MC is a step-up DC-DC converter that boosts the input voltage to a higher output voltage. It utilizes a switching regulator topology to efficiently convert the power. The IC controls the switch node (SW) based on feedback from the output voltage (FB) pin, maintaining a stable and regulated output voltage.

Detailed Application Field Plans

The MCP1643-I/MC is commonly used in various applications, including: 1. Battery-powered devices: It can efficiently boost the battery voltage to power components requiring higher voltages. 2. Portable electronics: The small package size makes it suitable for compact electronic devices such as smartphones, tablets, and wearables. 3. IoT devices: The wide input voltage range and low quiescent current make it ideal for IoT applications with varying power sources and power-saving requirements.

Detailed and Complete Alternative Models

1. MCP1643A-I/MC: Similar to MCP1643-I/MC but with an extended input voltage range of 0.35V to 5.5V.
2. MCP1643B-I/MC: Improved version with higher maximum output current of 600 mA.
3. MCP1644-I/MC: Step-up DC-DC converter with integrated load disconnect feature.

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