型号：MP7748DF-LF-Z
厂家：MPS（美国芯源）
批号：14+
封装：TSSOP-28F
应用：音响、SU***R
MP7748DF是一个2 x 20W Stereo Single Ended Class-D AudioAmplifier
其具体应用如下 ：
Description:
The MP7748 is a Class-D Audio Amplifier for driving stereospeakers in single-ended configuration or a mono speaker inbridge-tied-load configuration. It is fully integrated audioamplifier which dramatically reduces solution size by integratingthe following:
• 250mΩ power MOSFETs
• Start-up/shut-down pop elimination
• Short circuit protection circuits
The MP7748 is capable of delivering 20W per channel into 4Ω speakerin single-ended output structure, or delivering 50W into 6Ω speakerin bridge-tied-load output structure under 24V VDD. MPS Class-DAudio Amplifiers exhibit the high fidelity of a Class A/B amplifierat high efficiencies. The circuit is based on the MPS’ proprietaryvariable frequency topology that delivers excellent linearity, fastresponse time and operates on a single power supply.
MP7748 features programmable VDD shutdown voltage for each channelby controlling the UVP node voltage. The default VDD shutdown(rising threshold) voltage is 8.4V if the UVP pin is NC.
Features:
• Output Power at 24V VDD and 10% THD+N
• Stereo SE Configuration: 20W per Channel into 4Ω Load
• Mono BTL Configuration: 50W into 6Ω Load
• THD+N = 0.02% at 1W, 8Ω(SE)
• Low Noise (103μV with SE Configuration, 140μV with BTLConfiguration)
• Switching Frequency Up to 1MHz
• 9.5V to 36V Operation from a Single Supply
• Integrated Startup and Shutdown Pop Elimination Circuit
• Programmable UVP
• Thermal and Short Circuit Protection
• Integrated Power FETs
• Available in TSSOP28-Exposed Package
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