LM4892ITP

LM4892ITP Description

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LM4892ITP Datasheet (PDF)

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LM4892ITP Features

• Available in space-saving packages: LLP, micro SMD, MSOP, and SOIC
• Ultra low current shutdown mode
• BTL output can drive capacitive loads up to 500pF
• Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions
• 2.2 - 5.5V operation
• No output coupling capacitors, snubber networks or bootstrap capacitors required
• Thermal shutdown protection
• Unity-gain stable
• External gain configuration capability
• Headphone amplifier mode

LM4892ITP Description

The LM4892 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a 5V_DC power supply. Switching between bridged speaker mode and headphone (single-ended) mode is accomplished using the headphone sense pin.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. The LM4892 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4892 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4892 features an internal thermal shutdown protection mechanism.

The LM4892 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions.

The LM4892 is unity-gain stable and can be configured by external gain-setting resistors.

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