NCP1117DT18RKG

Product Overview

Category

NCP1117DT18RKG belongs to the category of voltage regulators.

Use

This product is commonly used to regulate voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.75V to 20V
• Output Voltage: 1.8V
• Maximum Output Current: 1A
• Dropout Voltage: 1.2V (typical)
• Low Quiescent Current: 5mA (typical)
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Adjustable Output Voltage with External Resistors

Package

NCP1117DT18RKG is available in a TO-252-3 package, also known as DPAK or DPak.

Essence

The essence of NCP1117DT18RKG is its ability to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.75V to 20V
• Output Voltage: 1.8V
• Output Current: Up to 1A
• Dropout Voltage: 1.2V (typical)
• Quiescent Current: 5mA (typical)
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-252-3 (DPAK)
• Lead-Free: Yes
• RoHS Compliant: Yes

Detailed Pin Configuration

NCP1117DT18RKG has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Voltage Regulation: NCP1117DT18RKG provides a stable output voltage of 1.8V, regardless of input voltage fluctuations.
• Thermal Shutdown Protection: The device incorporates thermal shutdown protection to prevent damage due to excessive temperature.
• Short Circuit Current Limiting: In the event of a short circuit, the current is limited to protect the device and connected components.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, allowing flexibility in certain applications.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Low quiescent current minimizes power consumption.
• Thermal shutdown protection ensures safe operation.
• Short circuit current limiting protects the device and connected components.
• Adjustable output voltage provides versatility.

Disadvantages

• Limited to a maximum output current of 1A, which may not be sufficient for high-power applications.
• Dropout voltage of 1.2V may result in higher power dissipation compared to low dropout regulators.

Working Principles

NCP1117DT18RKG operates based on the principle of linear voltage regulation. It utilizes a pass transistor and feedback mechanism to maintain a constant output voltage despite variations in the input voltage. The device compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to regulate the output.

Detailed Application Field Plans

NCP1117DT18RKG finds applications in various electronic systems that require a stable and regulated 1.8V power supply. Some common application fields include:

1. Microcontrollers and microprocessors
2. Digital logic circuits
3. Communication systems
4. Audio amplifiers
5. Battery-powered devices
6. Industrial control systems

Detailed and Complete Alternative Models

There are several alternative models available in the market that offer similar functionality to NCP1117DT18RKG. Some notable alternatives include:

1. LM1117-1.8: A popular voltage regulator with a fixed 1.8V output.
2. LT1117-1.8: Another reliable option for 1.8V voltage regulation.
3. ADP3339-1.8: A high-performance regulator with low dropout voltage.

These alternative models can be considered based on specific requirements and availability.

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