LM4917MTX/NOPB

Introduction

The LM4917MTX/NOPB is a versatile audio amplifier belonging to the category of integrated circuits. This device is commonly used in various electronic applications due to its compact size, high performance, and low power consumption.

Basic Information Overview

• Category: Integrated Circuit
• Use: Audio Amplifier
• Characteristics: Compact, High Performance, Low Power Consumption
• Package: 14-Pin Thin Shrink Small Outline Package (TSSOP)
• Essence: The LM4917MTX/NOPB is designed to amplify audio signals with high fidelity and efficiency.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Operating Voltage: 2.7V to 5.5V
• Output Power: 1.25W per channel into 8Ω at 5V
• Total Harmonic Distortion + Noise (THD+N): 0.15% (Typical) at 1kHz, 1.25W, 8Ω
• Shutdown Current: 0.01μA (Typical)
• Shutdown Function: Active Low

Detailed Pin Configuration

The LM4917MTX/NOPB features a 14-pin TSSOP package with the following pin configuration: 1. Shutdown (SHDN) 2. Input Bypass (INBYP) 3. Gain Select (GAIN) 4. Input Left (LIN) 5. Input Right (RIN) 6. Ground (GND) 7. Output Right (ROUT) 8. VDD 9. Mute (MUTE) 10. Bypass Capacitor (BP) 11. Bootstrap (BST) 12. Output Left (LOUT) 13. Bypass Capacitor (BN) 14. Bypass Capacitor (BP)

Functional Features

• Low Shutdown Current: Enables ultra-low power consumption when not in use.
• Integrated Gain Control: Allows for flexible adjustment of amplification levels.
• Thermal Shutdown Protection: Safeguards the device from overheating.
• Short-Circuit and Thermal Protection: Ensures the safety and reliability of the amplifier.

Advantages and Disadvantages

Advantages

• Compact Size
• High Fidelity Audio Reproduction
• Low Power Consumption
• Integrated Protection Features

Disadvantages

• Limited Output Power for High-End Audio Systems
• Requires External Components for Full Functionality

Working Principles

The LM4917MTX/NOPB operates by amplifying the input audio signals using an internal gain stage and then driving the output transistors to deliver the amplified signal to the connected speakers. The gain control feature allows users to adjust the amplification level according to their requirements.

Detailed Application Field Plans

The LM4917MTX/NOPB finds extensive application in portable audio devices, such as smartphones, tablets, portable speakers, and gaming consoles. Additionally, it is suitable for use in battery-powered audio systems, Bluetooth speakers, and other portable consumer electronics.

Detailed and Complete Alternative Models

• LM4863: Dual 2.2W Audio Amplifier with Shutdown Mode
• LM4880: 250mW Audio Power Amplifier
• LM4890: Dual 1 Watt Audio Power Amplifier

In conclusion, the LM4917MTX/NOPB is a highly efficient and compact audio amplifier that caters to the demands of modern portable electronic devices. Its advanced features, coupled with its small form factor, make it an ideal choice for various audio amplification applications.

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