LTC1147CN8-3.3#PBF

Product Overview

Category

The LTC1147CN8-3.3#PBF belongs to the category of voltage regulators.

Use

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

Characteristics

• Voltage Regulation: The LTC1147CN8-3.3#PBF provides a regulated output voltage of 3.3V.
• Efficiency: It offers high efficiency, ensuring minimal power loss during voltage regulation.
• Low Dropout: This voltage regulator has a low dropout voltage, enabling it to operate even when the input voltage is close to the desired output voltage.
• Current Limiting: The LTC1147CN8-3.3#PBF incorporates current limiting features to protect the circuit from excessive current flow.
• Thermal Shutdown: It includes thermal shutdown protection to prevent overheating and damage to the device.

Package

The LTC1147CN8-3.3#PBF comes in an 8-pin plastic DIP (Dual Inline Package) package.

Essence

The essence of the LTC1147CN8-3.3#PBF is its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage: 3.3V
• Output Current: Up to 800mA
• Dropout Voltage: 300mV at 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. GND (Ground): Connected to the ground reference of the circuit.
2. VIN (Input Voltage): The input voltage to be regulated.
3. VOUT (Output Voltage): The regulated output voltage of 3.3V.
4. SHDN (Shutdown): A logic high on this pin shuts down the regulator, reducing power consumption.
5. FB (Feedback): Connected to an external resistor divider network to set the desired output voltage.
6. SS (Soft-Start): This pin is used to control the soft-start time of the regulator.
7. COMP (Compensation): Connected to an external capacitor for loop stability and compensation.
8. VCC (Voltage Input): Connected to the positive supply voltage.

Functional Features

• Voltage Regulation: The LTC1147CN8-3.3#PBF maintains a stable output voltage despite variations in the input voltage or load conditions.
• Current Limiting: It incorporates current limiting functionality to protect the circuit from excessive current flow.
• Thermal Shutdown: The device includes thermal shutdown protection to prevent overheating and damage.
• Soft-Start: The soft-start feature ensures a gradual increase in output voltage during startup, preventing voltage spikes.

Advantages and Disadvantages

Advantages

• High efficiency, minimizing power loss.
• Low dropout voltage allows operation with low input-output voltage differentials.
• Compact and easy-to-use package.
• Wide input voltage range for versatile applications.
• Current limiting and thermal shutdown protection enhance circuit reliability.

Disadvantages

• Limited maximum output current compared to higher-power regulators.
• Requires external components for proper operation.
• Not suitable for applications requiring higher output voltages.

Working Principles

The LTC1147CN8-3.3#PBF operates as a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage. The regulation is achieved by controlling the pass transistor, which adjusts the current flow to maintain the desired output voltage.

Detailed Application Field Plans

The LTC1147CN8-3.3#PBF finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable electronics - Embedded systems - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and pin configuration.
2. LT1763-3.3: Offers higher output current capability and lower dropout voltage.
3. LM317: Adjustable voltage regulator with a wide input voltage range.

These alternative models provide flexibility in choosing the most suitable voltage regulator based on specific requirements and constraints.

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