CDC351DWRG4

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency voltage regulator - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection - Small package size

Package: SOIC-8

Essence: Voltage Regulator IC

Packaging/Quantity: Tape & Reel / 2500 units per reel

Specifications and Parameters

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 150mA
• Output Current: 150mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The CDC351DWRG4 has the following pin configuration:

```

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| | --| EN GND |-- Pin 1 --| FB OUT |-- Pin 2 --| VIN NC |-- Pin 3 --| VOUT NC |-- Pin 4 |___________| ```

Functional Characteristics

• EN (Enable): Logic input to enable/disable the regulator.
• FB (Feedback): Connects to an external resistor divider to set the output voltage.
• VIN (Input Voltage): Power supply input.
• VOUT (Output Voltage): Regulated output voltage.

Advantages and Disadvantages

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

Disadvantages: - Limited output current (150mA) - Narrow input voltage range (2.5V to 6.5V)

Applicable Range of Products

The CDC351DWRG4 is suitable for various applications that require a low dropout voltage and adjustable output voltage. It can be used in battery-powered devices, portable electronics, and other power management systems.

Working Principles

The CDC351DWRG4 is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. The feedback pin (FB) is connected to an external resistor divider network to set the desired output voltage. When enabled, the regulator maintains a stable output voltage by adjusting the pass transistor's resistance.

Detailed Application Field Plans

The CDC351DWRG4 can be used in the following application fields:

1. Battery-powered devices: Provides regulated voltage for efficient power usage.
2. Portable electronics: Ensures stable power supply for optimal performance.
3. Power management systems: Controls and regulates voltage levels in various circuits.

Detailed Alternative Models

Some alternative models to the CDC351DWRG4 include:

• LM1117
• LT1763
• ADP3339

5 Common Technical Questions and Answers

1. Q: What is the maximum input voltage for the CDC351DWRG4? A: The maximum input voltage is 6.5V.

2. Q: Can the output voltage be adjusted? A: Yes, the output voltage can be adjusted using an external resistor divider.

3. Q: Does the CDC351DWRG4 have overcurrent protection? A: Yes, it has built-in overcurrent protection.

4. Q: What is the operating temperature range of the CDC351DWRG4? A: The operating temperature range is -40°C to +125°C.

5. Q: What is the quiescent current of the CDC351DWRG4? A: The quiescent current is 75µA.

This article has provided an overview of the CDC351DWRG4 voltage regulator IC, including its basic information, specifications, pin configuration, functional characteristics, advantages and disadvantages, applicable range of products, working principles, alternative models, and common technical questions and answers.