MCP1256T-E/UN

Product Overview

Category

The MCP1256T-E/UN belongs to the category of voltage regulators.

Use

It is primarily used for voltage boosting applications.

Characteristics

• Input Voltage Range: 1.8V to 5.5V
• Output Voltage Range: 2.5V to 5.5V
• Maximum Output Current: 120mA
• Efficiency: Up to 96%
• Shutdown Current: 0.1µA (typical)
• Operating Temperature Range: -40°C to +85°C

Package

The MCP1256T-E/UN is available in a small 6-pin SOT-23 package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage, even when the input voltage fluctuates.

Packaging/Quantity

The MCP1256T-E/UN is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 1.8V to 5.5V
• Output Voltage Range: 2.5V to 5.5V
• Maximum Output Current: 120mA
• Quiescent Current: 55µA (typical)
• Shutdown Current: 0.1µA (typical)
• Ripple Rejection: 70dB (typical)
• Load Regulation: ±0.5% (typical)
• Line Regulation: ±0.2% (typical)
• Efficiency: Up to 96%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP1256T-E/UN has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin
4. EN: Enable pin
5. VOUT: Output voltage pin
6. VOUT: Output voltage pin

Functional Features

• Low quiescent current for improved efficiency
• Integrated soft-start feature to reduce inrush current
• Overcurrent protection to prevent damage to the device
• Thermal shutdown protection to prevent overheating
• Enable pin for easy on/off control
• Stable output voltage even under varying input conditions

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications
• High efficiency helps conserve power
• Small package size enables space-saving designs
• Integrated protection features enhance reliability
• Easy enable/disable control simplifies operation

Disadvantages

• Maximum output current may be limiting for certain high-power applications
• Limited output voltage range may not suit all requirements

Working Principles

The MCP1256T-E/UN operates as a boost converter, converting a lower input voltage to a higher output voltage. It utilizes an internal switch and control circuitry to regulate the output voltage. The feedback pin (FB) is used to monitor the output voltage and adjust the duty cycle of the internal switch to maintain a stable output.

Detailed Application Field Plans

The MCP1256T-E/UN finds application in various fields, including:

1. Battery-powered devices: It can be used to boost the battery voltage to power components that require a higher voltage.
2. Portable electronics: The voltage regulator can provide a stable voltage for microcontrollers, sensors, and other electronic components in portable devices.
3. IoT devices: It is suitable for powering low-power IoT devices that operate on low input voltages.
4. Automotive electronics: The MCP1256T-E/UN can be used in automotive applications where a stable voltage supply is required.

Detailed and Complete Alternative Models

1. MCP1640: A similar boost converter with a higher maximum output current of 500mA.
2. MCP16251: A boost converter with a wider input voltage range of 0.65V to 5.5V.
3. MCP1642: A compact boost converter with an integrated power switch.

These alternative models offer different specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

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