TL3474IPWR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout, high-performance
• Package: TSSOP-14
• Essence: Regulates voltage with minimal power loss
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 1A
• Maximum Output Current: 1A
• Quiescent Current: 75µA
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TL3474IPWR has a TSSOP-14 package with the following pin configuration:

| Pin No. | Name | Description | |---------|------|-------------| | 1 | EN | Enable Pin | | 2 | GND | Ground | | 3 | FB | Feedback | | 4 | VOUT | Output | | 5 | VIN | Input | | 6-14 | NC | Not Connected |

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High output current capability of 1A allows for powering a wide range of devices.
• Excellent line and load regulation provide stable output voltage under varying conditions.
• Thermal shutdown and current limit protection features enhance reliability.

Advantages

• Low dropout voltage minimizes power dissipation and extends battery life.
• Wide input voltage range enables compatibility with various power sources.
• Small package size saves board space in compact designs.
• High output current capability supports demanding applications.

Disadvantages

• Limited to fixed output voltage options, not adjustable.
• Requires external capacitors for stability and noise reduction.
• Higher cost compared to non-regulated voltage sources.

Working Principles

The TL3474IPWR is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage to control the pass transistor's conduction. When the output voltage drops below the desired level, the regulator adjusts the pass transistor's resistance to maintain a stable output voltage.

Detailed Application Field Plans

The TL3474IPWR is commonly used in various electronic devices and systems, including: 1. Battery-powered portable devices: Provides regulated power supply for smartphones, tablets, and portable audio players. 2. Automotive electronics: Ensures stable voltage for automotive infotainment systems, lighting modules, and sensors. 3. Industrial control systems: Used in PLCs, motor drives, and instrumentation equipment for reliable power regulation. 4. Communication systems: Enables stable voltage supply for routers, switches, and wireless access points. 5. Consumer electronics: Found in TVs, set-top boxes, and gaming consoles to maintain consistent power delivery.

Detailed and Complete Alternative Models

1. LM1117-3.3: Fixed 3.3V voltage regulator with similar specifications and package.
2. LT1763-5: Adjustable voltage regulator with a maximum output current of 500mA.
3. TPS7A4700: Ultra-low dropout voltage regulator with a maximum output current of 1A.

(Note: This list is not exhaustive and serves as an example of alternative models.)

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