NCP1397BDR2G

Product Overview

Category

NCP1397BDR2G belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

• High efficiency: The NCP1397BDR2G offers excellent power conversion efficiency, reducing energy waste.
• Wide input voltage range: It can operate with a wide range of input voltages, making it suitable for different power supply applications.
• Protection features: The IC incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown, ensuring system reliability.
• Low standby power consumption: In standby mode, the NCP1397BDR2G consumes minimal power, contributing to energy savings.

Package and Quantity

The NCP1397BDR2G is available in a small outline package (SOIC) with eight pins. It is typically sold in reels containing a specified quantity, usually 2500 units per reel.

Specifications

• Input voltage range: 8V to 20V
• Output voltage range: 3V to 15V
• Maximum output current: 1.5A
• Switching frequency: 100kHz to 500kHz
• Operating temperature range: -40°C to 125°C

Pin Configuration

The NCP1397BDR2G has eight pins arranged as follows:

```

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| | --| VCC | --| GND | --| FB | --| COMP | --| CS | --| SS | --| OUT | |_______| ```

• VCC: Power supply pin
• GND: Ground pin
• FB: Feedback pin for voltage regulation
• COMP: Compensation pin for stability control
• CS: Current sense pin for current regulation
• SS: Soft-start pin for gradual power-up
• OUT: Output pin

Functional Features

1. Voltage regulation: The NCP1397BDR2G provides precise voltage regulation, ensuring a stable output voltage even under varying load conditions.
2. Current regulation: It incorporates current sensing and control mechanisms to maintain a constant output current, protecting the system from overcurrent situations.
3. Soft-start functionality: The soft-start pin allows for a gradual increase in output voltage during startup, preventing excessive inrush current.
4. Protection mechanisms: The IC includes built-in protection features such as overvoltage protection, overcurrent protection, and thermal shutdown, safeguarding the system from potential damage.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Wide input voltage range enables versatile applications.
• Compact package size facilitates integration into various systems.
• Comprehensive protection mechanisms enhance system reliability.

Disadvantages

• Limited maximum output current may restrict certain high-power applications.
• Requires external components for complete power supply implementation.

Working Principles

The NCP1397BDR2G operates based on a pulse width modulation (PWM) control scheme. It regulates the output voltage by adjusting the duty cycle of the internal switching transistor. By monitoring the feedback voltage and comparing it with a reference voltage, the IC continuously adjusts the duty cycle to maintain the desired output voltage. Additionally, the current sense mechanism ensures proper current regulation.

Application Field Plans

The NCP1397BDR2G finds extensive application in various power management systems, including: - Switch-mode power supplies (SMPS) for computers, televisions, and other electronic devices. - Battery chargers for mobile phones, laptops, and electric vehicles. - LED drivers for lighting applications, such as streetlights and indoor lighting fixtures.

Alternative Models

For power management applications similar to the NCP1397BDR2G, alternative IC models include: - NCP1396BDR2G - NCP1398BDR2G - NCP1399BDR2G

These alternatives offer comparable features and specifications, providing flexibility in design choices.

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