NCP1247BD100R2G

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High voltage startup - Current mode control - Frequency jittering for EMI reduction - Built-in protection features - Low standby power consumption

Package: DFN-8 (Dual Flat No-Lead)

Essence: The NCP1247BD100R2G is a high-performance integrated circuit designed for power management applications. It offers various features and protection mechanisms to ensure efficient and reliable operation.

Packaging/Quantity: The NCP1247BD100R2G is typically sold in reels containing 3000 units.

Specifications

The NCP1247BD100R2G has the following specifications:

• Input Voltage Range: 9V to 38V
• Output Voltage Range: 5V to 24V
• Maximum Output Current: 700mA
• Switching Frequency: 65kHz to 115kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The NCP1247BD100R2G has a DFN-8 package with the following pin configuration:

1. VCC - Power supply input
2. GND - Ground
3. FB - Feedback pin for output voltage regulation
4. COMP - Compensation pin for loop stability
5. CS - Current sense input
6. SS - Soft-start capacitor connection
7. DRAIN - High-voltage power switch drain
8. SYNC - Synchronization input for multiple ICs

Functional Features

The NCP1247BD100R2G offers the following functional features:

1. High Voltage Startup: Enables operation from a wide range of input voltages.
2. Current Mode Control: Provides excellent line and load regulation.
3. Frequency Jittering: Reduces electromagnetic interference (EMI) emissions.
4. Built-in Protection Features: Includes overvoltage protection, overcurrent protection, and thermal shutdown.
5. Low Standby Power Consumption: Minimizes power consumption during standby mode.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications - Excellent line and load regulation ensures stable output voltage - Frequency jittering reduces EMI emissions, complying with regulatory standards - Built-in protection features enhance system reliability - Low standby power consumption improves energy efficiency

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - DFN-8 package may require specialized handling during assembly

Working Principles

The NCP1247BD100R2G operates based on a current mode control scheme. It uses a high-voltage startup circuit to initiate operation from a wide input voltage range. The integrated power switch controls the energy transfer between the input and output stages. The feedback loop regulates the output voltage by adjusting the duty cycle of the power switch. The frequency jittering feature helps reduce EMI emissions. Built-in protection mechanisms ensure safe operation under fault conditions.

Detailed Application Field Plans

The NCP1247BD100R2G is commonly used in various power management applications, including:

1. Switched-Mode Power Supplies (SMPS): Used in AC-DC converters, DC-DC converters, and battery chargers.
2. LED Lighting: Enables efficient and reliable LED driver circuits.
3. Industrial Control Systems: Provides power management solutions for industrial automation equipment.
4. Consumer Electronics: Suitable for power supply units in televisions, set-top boxes, and audio systems.
5. Automotive Electronics: Used in automotive power modules and lighting systems.

Detailed and Complete Alternative Models

1. NCP1247BD65R2G: Similar to NCP1247BD100R2G, but with a lower maximum output current of 500mA.
2. NCP1247BD133R2G: Similar to NCP1247BD100R2G, but with a higher maximum output current of 1A.
3. NCP1247BD150R2G: Similar to NCP1247BD100R2G, but with a higher maximum output current of 1.5A.

These alternative models provide options for different output current requirements while maintaining similar functionality and characteristics.

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