LM4732 Datasheet | National Semiconductor

Description The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz - 20k Hz. The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C. The LM4732 also has an under voltage lock out feature for click and pop free power on and off. Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute. The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used. The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions. Key Specifications j Output Power/Channel at 10% THD+N, 1k Hz into 4Ω or 8Ω j THD+N at 2 x 1W into 8Ω, 1k Hz j Mute Attenuation j PSRR j Slew Rate 50W (typ) 0.01% (typ) 110d B (typ) 89d B (typ) 19V/µs (typ) Features n Low external ponent count n Quiet fade-in/out mute mode n Wide supply range: 20V - 80V Applications n n n n Audio Audio Audio Audio amplifier amplifier amplifier amplifier for for for for ponent stereo pact stereo self-powered speakers high-end and HD TVs Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit © 2003 National Semiconductor Corporation DS200724 .national. Connection Diagrams Plastic Package (Note 13) 200724D7 Top View Order Number LM4732TA See NS Package Number TA27A TO-220 Top Marking 200724D6 Top View U - Wafer Fab Code Z - Assemble Plant Code XY - Date Code TT - Die Run Traceability L4732TA - LM4732TA .national. Absolute Maximum Ratings 2) (Notes 1, Soldering Information TA Package (10 seconds) Storage Temperature Thermal Resistance θJA θJC 30˚C/W 0.8˚C/W 260˚C -40˚C to +150˚C If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply...