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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM4651 датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM4651 датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  LM4651 & LM4652 Overture™ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution General Description The IC combination of the LM4651 driver and the LM4652 power MOSFET provides a high efficiency, Class D sub- woofer amplifier solution. The LM4651 is a fully integrated conventional pulse width modulator driver IC. The IC contains short circuit, under voltage, over modulation, and thermal shut down protection circuitry. It contains a standby function, which shuts down the pulse width modulation and minimizes supply current. The LM4652 is a fully integrated H-bridge power MOSFET IC in a TO-220 power package. Together, these two IC’s form a simple, compact high power audio amplifier solution complete with protection normally seen only in Class AB amplifiers. Few external components and minimal traces between the IC’s keep the PCB area small and aids in EMI control. The near rail-to-rail switching amplifier substantially in- creases the efficiency compared to Class AB amplifiers. This high efficiency solution significantly reduces the heat sink size compared to a Class AB IC of the same power level. This two-chip solution is optimum for powered subwoofers and self powered speakers. Key Specifications n Output power into 4 Ω with < 10% THD. 170W (Typ) n THD at 10W, 4 Ω, 10 − 500Hz. < 0.3% THD (Typ) n Maximum efficiency at 125W 85% (Typ) n Standby attenuation. >100dB (Min) Features n Conventional pulse width modulation. n Externally controllable switching frequency. n 50kHZ to 200kHz switching frequency range. n Integrated error amp and feedback amp. n Turn−on soft start and under voltage lockout. n Over modulation protection (soft clipping). n Short circuit current limiting and thermal shutdown protection. n 15 Lead TO−220 isolated package. n Self checking protection diagnostic. Applications n Powered subwoofers for home theater and PC’s n Car booster amplifier n Self-powered speakers Connection Diagrams Overture® is a registered trademark of National Semiconductor Corporation. LM4651 Plastic Package DS101277-72 Top View Order Number LM4651N See NS Package Number N28B LM4652 Plastic Package (Note 8) DS101277-73 Isolated TO-220 Package Order Number LM4652TF See NS Package Number TF15B or Non-Isolated TO-220 Package Order Number LM4652TA See NS Package Number TA15A August 2000 © 2001 National Semiconductor Corporation DS101277 www.national.com |
Аналогичный номер детали - LM4651 |
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Аналогичное описание - LM4651 |
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