NCP81155MNTXG

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: QFN (Quad Flat No-leads)

Essence: The NCP81155MNTXG is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The NCP81155MNTXG is available in a QFN package. It is typically sold in reels containing a specific quantity of ICs.

Specifications

• Input Voltage Range: 2.7V - 5.5V
• Output Voltage Range: 0.6V - 3.3V
• Output Current: Up to 1.5A
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 60µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NCP81155MNTXG has the following pin configuration:

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

Functional Features

• High Efficiency: The NCP81155MNTXG offers high efficiency, minimizing power loss and maximizing battery life in portable devices.
• Low Dropout Voltage: The low dropout voltage ensures stable operation even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can accept a wide range of input voltages, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range to meet specific requirements.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the device and connected components from excessive current.
• Thermal Shutdown Protection: In case of excessive temperature, the IC automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal protection

Disadvantages: - Dropout voltage may not be suitable for ultra-low power applications - Limited output current capacity compared to higher-rated regulators

Working Principles

The NCP81155MNTXG operates as a linear voltage regulator. It regulates the output voltage by adjusting the resistance between the input and output pins, maintaining a constant voltage difference. This is achieved through internal circuitry that monitors the feedback voltage and adjusts the control element accordingly.

Detailed Application Field Plans

The NCP81155MNTXG is commonly used in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - Wireless communication devices

Detailed and Complete Alternative Models

1. NCP81156MNTXG: Similar to NCP81155MNTXG with higher output current capacity (up to 2A).
2. NCP81157MNTXG: Similar to NCP81155MNTXG with additional features such as adjustable soft-start and power good indicator.

These alternative models offer similar functionality but with different specifications to cater to specific application requirements.

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