LM48511SQBD

LM48511SQBD

Compare
LM48511SQBD
BOARD EVAL BOOST C LM48511
Compare

Obsolete

Quantity Available: 29
SZC Quality Assurance
Texas Instruments

Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.

View All Product from Texas Instruments

LM48511SQBD Introduction

To help the user investigate and evaluate the LM48511SQ performance and capabilities, a fully populateddemonstration board was created. This board is shown in Figure 1. Connected to an external powersupply (3.0V ≤ VDD ≤ 5.5V) and a signal source, the LM48511SQ demonstration board easily exercises theamplifier’s features.Figure 1. Typical LM48511SQ Demonstration Board

LM48511SQBD Board Features

The LM48511SQ 3W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier with SpreadSpectrum demonstration board has all of the necessary connections using 0.100” headers connectors toapply the power supply voltage, audio input signals, and audio output (speaker). The amplified audiosignal is only available on the audio output header.

LM48511SQBD General Description

The Texas Instruments LM48511 integrates a boost converter with a high efficiency Class D audio poweramplifier to provide 3W continuous power into an 8Ω speaker when operating from a 5V power supply.When operating from a 3V to 4V power supply, the LM48511 can be configured to drive 1 to 2.5W into an8Ω load with less than 1% distortion (THD+N). The Class D amplifier features a low noise PWMarchitecture that eliminates the output filter, reducing external component count, board area consumption,system cost, and simplifying design. A selectable spread spectrum modulation scheme suppresses RFemissions, further reducing the need for output filters. The LM48511’s switching regulator is a current-mode boost converter operating at a fixed frequency of 1MHz. Two selectable feedback networks allowthe LM48511 regulator to dynamically switch between two different output voltages, improving efficiencyby optimizing the amplifier’s supply voltage based on battery voltage and output power requirements. TheLM48511 is designed for use in portable devices, such as GPS, mobile phones, and MP3 players. Thehigh, 80% efficiency at 5V, extends battery life when compared to boosted Class AB amplifiers.Independent regulator and amplifier shutdown controls optimize power savings by disabling the regulatorwhen high output power is not required.The gain of the LM48511 is set by external resistors, which allows independent gain control from multiplesources by summing the signals. Output short circuit and thermal overload protection prevent the devicefrom damage during fault conditions. Superior click and pop suppression eliminates audible transientsduring power-up and shutdown.

Product Attributes

TYPE DESCRIPTION Select all
Product Status Obsolete
Amplifier Type Class D
Output Type 1-Channel (Mono)
Max Output Power x Channels @ Load 6.7W x 1 @ 4Ohm
Voltage - Supply 3V ~ 5.5V
Board Type Fully Populated
Utilized IC / Part LM48511
Supplied Contents Board(s)
Series Boomer®
Package Box

Obsolete

Quantity Available: 29
SZC Quality Assurance
Texas Instruments

Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.

View All Product from Texas Instruments
45
Serves customers in 45 countries
1000+
Worldwide Manufacturers
$140M
$140M Growth in 5 Years
50.0M+
50M Parts Shipped in 5 Years