LM4819 Datasheet | National Semiconductor

Description The LM4819 is a mono bridged power amplifier that is capable of delivering 350m WRMS output power into a 16Ω load or 300m WRMS output power into an 8Ω load with 10% THD+N from a 5V power supply. The LM4819 Boomer audio power amplifier is designed specifically to provide high quality output power and minimize PCB area with surface mount packaging and a minimal amount of external ponents. Since the LM4819 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications. The closed loop response of the unity-gain stable LM4819 can be configured using external gain-setting resistors. The device is available in LLP, MSOP, and SO package types to suit various applications. Key Specifications n THD+N at 1k Hz, 350m W continuous average output power into 16Ω 10% (max) n THD+N at 1k Hz, 300m W continuous average output power into 8Ω 10% (max) n Shutdown Current 0.7µA (typ) Features n n n n LLP, SOP, and MSOP surface mount packaging. Switch on/off click suppression. Unity-gain stable. Minimum external ponents. Applications n General purpose audio n Portable electronic devices n Information Appliances (IA) Typical Application DS200136-1 FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 2002 National Semiconductor Corporation DS200136 .national. Connection Diagrams Small Outline (SO) Package SO Marking DS200136-72 DS200136-35 Top View Order Number LM4819M See NS Package Number M08A Mini Small Outline (MSOP) Package Top View XY - Date Code TT - Die Traceability Bottom 2 lines - Part Number MSOP Marking DS200136-71 DS200136-36 Top View G - Boomer Family 19 - LM4819MM Top View Order Number LM4819MM See NS Package Number MUA08A LLP Package DS200136-74 Top View Order Number LM4819LD See NS Package Number LDA08B .national. Absolute Maximum Ratings (Notes 2, 3) If...