LM48557UR/NOPB

Product Overview

Category: Audio Amplifier
Use: The LM48557UR/NOPB is a mono, bridge-tied load (BTL) audio power amplifier designed for use in portable electronic devices.
Characteristics: It features low quiescent current, minimal external components, and a small package size.
Package: The LM48557UR/NOPB is available in a 9-bump DSBGA package.
Essence: This amplifier is essential for driving small speakers with low distortion and high efficiency.
Packaging/Quantity: The LM48557UR/NOPB is typically sold in reels of 2500 units.

Specifications

• Output Power: 1.1W at 10% THD into an 8Ω Load
• Efficiency: 85%
• Quiescent Current: 1.6mA
• Operating Voltage Range: 2.4V to 5.5V
• Shutdown Current: 0.01μA

Detailed Pin Configuration

The LM48557UR/NOPB has a 9-bump DSBGA package with the following pin configuration: 1. SHUTDOWN 2. VDD 3. GND 4. BYPASS 5. IN- 6. IN+ 7. OUT- 8. OUT+ 9. GAIN

Functional Features

• Low Quiescent Current
• Thermal Shutdown Protection
• Short-Circuit and Thermal Protection
• Differential Inputs

Advantages and Disadvantages

Advantages: - Low power consumption - Small package size - Thermal and short-circuit protection

Disadvantages: - Limited output power compared to other amplifiers in its class

Working Principles

The LM48557UR/NOPB operates by amplifying the input audio signal and delivering it to the connected speaker while maintaining high efficiency and low distortion. It utilizes a BTL configuration to drive the speaker without requiring an output coupling capacitor.

Detailed Application Field Plans

The LM48557UR/NOPB is suitable for various portable electronic devices such as smartphones, tablets, portable gaming consoles, and Bluetooth speakers. Its low power consumption and small package size make it ideal for battery-powered applications.

Detailed and Complete Alternative Models

• TPA2012D2 from Texas Instruments
• MAX98306 from Maxim Integrated
• NCP2820 from ON Semiconductor

In conclusion, the LM48557UR/NOPB is a versatile audio amplifier suitable for portable electronic devices, offering low power consumption, thermal protection, and high efficiency. Its compact package and functional features make it an ideal choice for various applications in the consumer electronics industry.