NCP4308DDR2G

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: DFN-10 (3x3 mm)

Essence: The NCP4308DDR2G is a voltage regulator IC designed for various applications that require stable and regulated power supply.

Packaging/Quantity: The NCP4308DDR2G is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Output Current: Up to 500mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The NCP4308DDR2G has the following pin configuration:

1. EN (Enable)
2. FB (Feedback)
3. GND (Ground)
4. VOUT (Output Voltage)
5. VIN (Input Voltage)
6. NC (No Connection)
7. NC (No Connection)
8. NC (No Connection)
9. NC (No Connection)
10. PG (Power Good)

Functional Features

• High Efficiency: The NCP4308DDR2G offers high efficiency, minimizing power loss and maximizing battery life.
• Low Dropout Voltage: With a low dropout voltage of 200mV at 100mA, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can operate within a wide input voltage range of 2.7V to 5.5V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.6V to the input voltage (VIN) using external resistors.
• Overcurrent Protection: The NCP4308DDR2G incorporates overcurrent protection, safeguarding the circuit and load 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 leads to reduced power consumption. - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility. - Overcurrent and thermal shutdown protection enhance reliability.

Disadvantages: - Limited output current capacity (up to 500mA).

Working Principles

The NCP4308DDR2G operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage. By adjusting the resistance connected to the FB pin, the output voltage can be set within the specified range. The IC continuously monitors the input voltage (VIN) and adjusts the internal circuitry to maintain a stable output voltage.

Detailed Application Field Plans

The NCP4308DDR2G is commonly used in various electronic devices and systems that require a regulated power supply. Some application fields include:

1. Mobile Devices: Smartphones, tablets, portable media players.
2. Wearable Electronics: Smartwatches, fitness trackers.
3. IoT Devices: Sensors, wireless modules.
4. Consumer Electronics: Digital cameras, portable gaming consoles.
5. Industrial Equipment: Measurement instruments, control systems.

Detailed and Complete Alternative Models

1. LM1117-ADJ: Adjustable Linear Voltage Regulator, TO-220 package.
2. LT1763-3.3: Low Dropout Regulator, SOT-223 package.
3. TPS7A4700: High-Voltage Low-Dropout Linear Regulator, VQFN-16 package.
4. AP2112K-ADJ: Adjustable Low Dropout Regulator, SOT-23 package.
5. MAX6037AAUK30: Micropower Low Dropout Voltage Regulator, SOT-23 package.

These alternative models offer similar functionality and can be considered as substitutes for the NCP4308DDR2G in various applications.

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