LM48557 - Ceramic Speaker Driver

National Semiconductor

LM48557 Datasheet Preview — Preview of LM48557 PDF

Datasheet Details

Part number	LM48557
Manufacturer	National Semiconductor ↗
File Size	644.68 KB
Description	Ceramic Speaker Driver
Datasheet	LM48557_NationalSemiconductor.pdf

LM48557 Product details

Description

The LM48557 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones and portable media players, where board space is at a premium.

Features

high power supply rejection ratio (PSRR), 80dB at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.7V to 4.5V. The LM48557 features an active low reset input that reverts the device to its default state. Additionally, the LM48557 features a 36-step I2C volume control and mute function. The low power Shutdown mode reduces supply current consumption to 0.01µA. The LM48557’s superior c.

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Published: Sep 11, 2009 |