LM48100Q

www.ti.com

SNAS470D – OCTOBER 2008 – REVISED MARCH 2013

LM48100Q Boomer™ Mono, 1.3W Audio Power Amplifier with Output Fault Detection and

Volume Control

Check for Samples: LM48100Q

1

FEATURES

DESCRIPTION

The LM48100Q is a single supply, mono, bridge-tied

23

•

Output Fault Detection

•

automotive applications. A comprehensive output

•

Input Mixer/Multiplexer

fault detection system senses the load conditions,

protecting the device during short circuit events, as

•

High PSRR

well as detecting open circuit conditions.

•

Individual 32-Step Volume Control

Operating from a single 5V supply, the LM48100Q

•

Short Circuit and Thermal Protection

delivers 1.3W of continuous output power to an 8

Ω

•

Advanced Click-and-Pop Suppression

load with < 1% THD+N. Flexible power supply

•

Low Power Shutdown Mode

requirements allow operation from 3.0V to 5.5V. High

power supply rejection ratio (PSRR), 74dB at 1kHz,

•

Available in 14-pin HTSSOP Package

allows the device to operate in noisy environments

without additional power supply conditioning.

APPLICATIONS

The LM48100Q features dual audio inputs that can

•

Automotive Instrument Clusters

be mixed/multiplexed to the device output. Each input

•

Hands-free Car Kits

path has its own independent, 32-step volume

•

Medical

control. The mixer, volume control and device mode

interface. An open drain FAULT output indicates

KEY SPECIFICATIONS

when a fault has occurred. Comprehensive output

•

short circuit and thermal overload protection prevent

1% 1.3W (typ)

the device from being damaged during a fault

•

Quiescent Power Supply Current

at 5V 6mA

condition.

(Typ)

A low power shutdown mode reduces supply current

•

PSRR at 1kHz 74dB (Typ)

consumption to 0.01µA. Superior click and pop

suppression eliminates audible transients on power-

•

Shutdown current 0.01

μA (Typ)

up/down and during shutdown. The LM48100Q is

available in an 14-pin HTSSOP package

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

Boomer is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.