LM4680SD/NOPB

Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Class D
Output Type:	1-Channel (Mono)
Max Output Power x Channels @ Load:	10W x 1 @ 8 Ohm
Voltage - Supply:	9 V ~ 14 V
Features:	Depop, Short-Circuit and Thermal Protection, Shutdown
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	14-VSON (5x6)
Package / Case:	14-VDFN Exposed Pad
Base Part Number:	LM4680

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LM4680SD/NOPB Application Field and Working PrincipleThe LM4680SD/NOPB is a high-performance audio power amplifier designed for use in a wide variety of applications including cell phones, portable media players, home theater systems and automotive audio. This audio power amplifier offers excellent audio power and performance, with low total harmonic distortion (THD), superior dynamic range and high-fidelity sound quality.The LM4680SD/NOPB offers a wide range of features, including dual path audio power support, low power consumption, adjustable current protection, and enhanced thermal performance. It is also configurable for Class AB and Class D operations.Application FieldsThe LM4680SD/NOPB can be used as an audio power amplifier in a wide range of applications, including both portable and fixed applications. Portable applications include cell phones, personal media players, and portable speakers. It is also suitable for automotive audio applications and home theater systems.Operating PrincipleThe LM4680SD/NOPB is a high-efficiency audio power amplifier. It operates in Class AB and Class D mode, depending on the application. The amplifier delivers up to 4.5 W of continuous power into 8 ohm loads and up to 5.5 W into 4 ohm loads.In Class AB mode, the output stage consists of two halves of a complementary push-pull output stage operated in a class AB configuration. This configuration provides greater output power and improved efficiency compared to class A outputs. The push-pull complementary output allows for greater output power and improved audio performance.In Class D mode, the LM4680SD/NOPB operates as a two-level clocked amplifier, which delivers maximum efficiency with no audible crossover distortion. It is the ideal choice for applications requiring low power consumption and high efficiency.The LM4680SD/NOPB also includes various protection features and a low power consumption standby mode. An adjustable current limiting feature and ESD protection ensure the device is protected against over current and electrostatic discharge. The LM4680SD/NOPB also includes thermal shutdown protection to protect the device against overheating and an adjustable under-voltage lockout to prevent the device from operating at an unsafe supply voltage.ConclusionThe LM4680SD/NOPB is a top-of-the-line audio power amplifier designed for a wide range of applications including cell phones, portable media players, home theatre systems, and automotive audio. It offers excellent performance, with low total harmonic distortion (THD), superior dynamic range and high-fidelity sound quality. The device is configurable for Class AB and Class D operations and offers adjustable current protection and enhanced thermal performance. The LM4680SD/NOPB is the ideal power amplifier for any audio application.

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