NCP1399AHDR2G

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: SOIC-8

Essence: The NCP1399AHDR2G is a high-performance integrated circuit designed for power management applications. It offers various features and protection mechanisms to ensure efficient and reliable power delivery.

Packaging/Quantity: The NCP1399AHDR2G is typically sold in reels containing 2500 units.

Specifications

The NCP1399AHDR2G has the following specifications:

• Input Voltage Range: 10V - 20V
• Output Voltage Range: 5V - 15V
• Maximum Output Current: 1A
• Operating Temperature Range: -40°C to +125°C
• Switching Frequency: 100kHz - 500kHz

Pin Configuration

The NCP1399AHDR2G has a standard SOIC-8 pin configuration as follows:

```

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| | --| VCC GND |-- Pin 1: Ground --| FB CS |-- Pin 2: Current Sense --| COMP INV |-- Pin 3: Error Amplifier Output --| SS RT |-- Pin 4: Soft Start / External Resistor Timing --| VREF OUT |-- Pin 5: Reference Voltage / Output --| EN NC |-- Pin 6: Enable / No Connection --| VIN NC |-- Pin 7: Input Voltage / No Connection --| NC |-- Pin 8: No Connection |___________| ```

Functional Features

The NCP1399AHDR2G offers the following functional features:

1. High Voltage Startup: The IC can start up from a high input voltage, making it suitable for various power management applications.

2. Current Mode Control: It utilizes current mode control to regulate the output voltage and provide stable operation.

3. Frequency Jittering for EMI Reduction: The IC incorporates frequency jittering techniques to reduce electromagnetic interference (EMI) emissions.

4. Built-in Protection Features: It includes built-in protection mechanisms such as overvoltage protection, undervoltage lockout, and thermal shutdown to ensure safe and reliable operation.

5. Low Standby Power Consumption: The NCP1399AHDR2G has low standby power consumption, contributing to energy efficiency.

Advantages and Disadvantages

Advantages: - High voltage startup capability - Efficient current mode control - Reduced EMI emissions - Built-in protection features enhance reliability - Low standby power consumption

Disadvantages: - Limited maximum output current (1A) - Restricted input and output voltage ranges

Working Principles

The NCP1399AHDR2G operates based on a current mode control scheme. It regulates the output voltage by adjusting the duty cycle of the internal switching transistor. The error amplifier compares the feedback voltage with the reference voltage to generate an error signal, which controls the switching frequency and duty cycle. This feedback loop ensures stable and accurate output voltage regulation.

Detailed Application Field Plans

The NCP1399AHDR2G is commonly used in various power management applications, including but not limited to:

1. Switching Power Supplies: It can be employed in switch-mode power supplies to efficiently convert and regulate electrical power.

2. LED Lighting: The IC can drive LED lighting systems, providing precise control over the brightness and ensuring efficient power delivery.

3. Industrial Automation: It finds applications in industrial automation systems, where reliable power management is crucial for the operation of various equipment and machinery.

4. Consumer Electronics: The NCP1399AHDR2G can be utilized in consumer electronic devices such as televisions, audio systems, and computer peripherals to ensure stable and efficient power supply.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the NCP1399AHDR2G include:

1. LM2576-ADJ: A voltage regulator IC with adjustable output voltage and current limiting capabilities.

2. LT1370: A high-efficiency step-down switching regulator with a wide input voltage range and adjustable output voltage.

3. TPS5430: A synchronous buck converter IC with integrated MOSFETs, offering high efficiency and a wide input voltage range.

4. MC34063A: A versatile DC-DC converter IC capable of step-up, step-down, and inverting voltage conversion.

These alternative models can be considered based on specific application requirements and design constraints.

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