LTC1147IS8-3.3#TRPBF

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Efficiency
• Package: 8-Pin SOIC
• Essence: Regulates voltage with low dropout and high efficiency
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 10V
• Output Voltage: 3.3V
• Maximum Output Current: 800mA
• Dropout Voltage: 300mV at 800mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. GND (Ground)
2. VOUT (Output Voltage)
3. VIN (Input Voltage)
4. NC (No Connection)
5. NC (No Connection)
6. NC (No Connection)
7. SHDN (Shutdown)
8. FB (Feedback)

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Shutdown pin allows for power-saving mode when not in use.
• Overcurrent and thermal protection ensure safe operation.
• Fast transient response enables stability during load variations.

Advantages

• Low dropout voltage minimizes power dissipation.
• High efficiency results in longer battery life.
• Small package size saves board space.
• Wide input voltage range allows for versatile applications.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Operating temperature range might not be suitable for extreme environments.

Working Principles

The LTC1147IS8-3.3#TRPBF is a linear voltage regulator that maintains a stable output voltage of 3.3V regardless of input voltage fluctuations. It achieves this by utilizing a P-channel MOSFET pass transistor and a low dropout voltage reference. The feedback pin compares the output voltage with a reference voltage, adjusting the pass transistor to regulate the output voltage. The shutdown pin allows the regulator to enter a low-power state when not in use.

Detailed Application Field Plans

The LTC1147IS8-3.3#TRPBF is commonly used in various electronic devices that require a stable 3.3V power supply. Some typical applications include: 1. Battery-powered devices such as portable audio players and handheld gaming consoles. 2. Embedded systems and microcontrollers. 3. Communication equipment like routers and modems. 4. Automotive electronics for powering sensors and control modules. 5. Industrial control systems and instrumentation.

Detailed and Complete Alternative Models

1. LM1117-3.3: Similar voltage regulator with adjustable output voltage.
2. LT1763-3.3: Low dropout voltage regulator with higher maximum output current.
3. MCP1700-3302E: Low-cost alternative with fixed 3.3V output voltage.

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