NCP803SN293D2T1G

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Low Quiescent Current - High Accuracy - Overcurrent Protection - Thermal Shutdown Protection

Package: SOT-23-3

Essence: The NCP803SN293D2T1G is a voltage regulator IC designed to provide a stable output voltage for various electronic devices.

Packaging/Quantity: The NCP803SN293D2T1G is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage: 2.93V
• Dropout Voltage: 150mV @ 150mA
• Quiescent Current: 1.0µA
• Line Regulation: ±0.15%
• Load Regulation: ±0.25%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The NCP803SN293D2T1G has three pins arranged as follows:

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Pin 1: GND (Ground)

Pin 2: VOUT (Output Voltage)

Pin 3: VIN (Input Voltage)

Functional Features

1. Low Dropout Voltage: The NCP803SN293D2T1G exhibits a low dropout voltage, ensuring efficient power conversion even when the input voltage is close to the desired output voltage.

2. Low Quiescent Current: With a quiescent current of only 1.0µA, this voltage regulator minimizes power consumption during standby or idle modes.

3. High Accuracy: The IC provides a highly accurate output voltage of 2.93V, making it suitable for applications requiring precise voltage regulation.

4. Overcurrent Protection: The NCP803SN293D2T1G incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.

5. Thermal Shutdown Protection: In case of excessive temperature rise, the IC automatically shuts down to prevent damage, ensuring reliable operation under varying conditions.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient power conversion. - Low quiescent current minimizes power consumption during standby. - High accuracy ensures precise voltage regulation. - Overcurrent protection safeguards connected circuitry. - Thermal shutdown protection prevents damage due to excessive temperature.

Disadvantages: - Limited input voltage range (2.5V - 6.0V). - SOT-23-3 package may require additional space on the PCB.

Working Principles

The NCP803SN293D2T1G operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. This ensures that the output voltage remains stable even when the input voltage fluctuates within the specified range.

The IC utilizes a feedback mechanism to compare the output voltage with a reference voltage. Any deviation from the desired output voltage is corrected by adjusting the pass transistor's resistance, thereby regulating the output voltage.

Detailed Application Field Plans

The NCP803SN293D2T1G finds applications in various electronic devices where stable voltage regulation is crucial. Some potential application fields include:

1. Battery-Powered Devices: Portable electronic devices such as smartphones, tablets, and wearable gadgets often rely on battery power. The NCP803SN293D2T1G can be used to regulate the voltage supplied to these devices, ensuring consistent performance.

2. Embedded Systems: Microcontrollers, sensors, and other components in embedded systems require stable power supply voltages. The NCP803SN293D2T1G can be employed to regulate the voltage for these components, enhancing system reliability.

3. Automotive Electronics: In automotive applications, where voltage fluctuations are common, the NCP803SN293D2T1G can be utilized to provide a stable voltage supply to various electronic modules, ensuring proper functionality.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and pin configuration.
2. MCP1700-3302E: Another alternative offering low dropout voltage and high accuracy.
3. TS2940CX33: An alternative with a wider input voltage range and thermal shutdown protection.

These alternatives can be considered based on specific requirements and availability.

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