LM4700 Datasheet | National Semiconductor

Description The LM4700 is an audio power amplifier capable of delivering typically 30W of continuous average output power into an 8Ω load with less than 0.1% (THD + N). The LM4700 has an independent smooth transition fade-in/ out mute and a power conserving standby mode which can be controlled by external logic. The performance of the LM4700, utilizing its Self Peak Instantaneous Temperature (˚Ke) (SPi Ke™) Protection Circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPi Ke Protection means that these parts are pletely safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks. Key Specifications n THD+N at 1 k Hz at continuous average output power of 25W into 8Ω: 0.1% (max) n THD+N from 20 Hz to 20 k Hz at 30W of continuous average output power into 8Ω: 0.08% (typ) n Standby current: 2.1 m A (typ) Features n n n n n SPi Ke Protection Minimal amount of external ponents necessary Quiet fade-in/out mute function Power conserving standby-mode Isolated 11-lead TO-220 package Applications n ponent stereo n pact stereo Typical Application Connection Diagram Isolated Plastic Package DS012369-2 Top View Order Number LM4700TF See NS Package Number TF11B DS012369-1 - Optional ponents dependent upon specific design requirements. Refer to the External ponents Description section for a ponent functional description . FIGURE 1. Typical Audio Amplifier Application Circuit SPi Ke™ Protection and Overture™ are trademarks of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012369 .national. Absolute Maximum Ratings (Notes 4, 5) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage |VCC| + |VEE| (No Signal) Supply Voltage |VCC| + |VEE| (with Input and Load) mon...