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LA4632 Datasheet(PDF) 6 Page - Sanyo Semicon Device |
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LA4632 Datasheet(HTML) 6 Page - Sanyo Semicon Device |
6 / 8 page No.8178-6/8 LA4632 [Thermal Protection Circuit] • The LA4632 includes an on-chip thermal protection circuit to prevent degradation or destruction of the IC due to abnormal heating. If this IC's junction temperature (Tj) rises above 160°C due to and insufficient heat sink or other reason, the thermal protection circuit will operate and gradually reduce the output signal level. This protection function clears automatically as the temperature falls. Notes on Printed Circuit Boards When designing the printed circuit board pattern, keep the inputs and VCC, and the inputs and the outputs, away from each other. (This is to prevent increased distortion, oscillation, and other problems.) Notes on Heat Sink Attachment Foreign matter such as metal chips must not be trapped between the IC's heat sink and the externally attached heat sink. If a grease is used between the IC and the external heat sink, be sure to apply the grease evenly to the whole contact surface. Other Notes The LA4632 is a BTL power amplifier IC. When connecting test equipment, the test equipment used for the input system and the test equipment used for the output system must not share the same ground. 2 0 10 20 30 40 100 60 70 80 90 50 48 16 610 14 12 18 24 20 22 ICCO -- VCC ILA06995 THD -- PO ILA06997 6 4 0 4 8 12 16 22 20 2 6 10 14 18 816 20 12 14 18 10 24 22 PO -- VCC ILA06996 VCC=13V RL=4Ω 0.1 1.0 23 5 7 3 10 22 35 7 7 5 3 10 2 3 2 7 5 7 5 1.0 3 0.1 RL=Open Rg=0 f=1kHz THD=10% f=10kHz f=100Hz f=1kHz THD -- PO ILA06998 VCC=13V RL=6Ω 0.1 1.0 23 5 7 2 1.0 35 7 2 7 5 3 10 2 3 2 7 5 7 5 1.0 3 0.1 f=10kHz f=100Hz f=1kHz Supply voltage, VCC - V Supply voltage, VCC - V Output power, PO - W Output power, PO - W |
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