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AM5954AM28-E1 Datenblatt(PDF) 11 Page - BCD Semiconductor Manufacturing Limited |
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AM5954AM28-E1 Datenblatt(HTML) 11 Page - BCD Semiconductor Manufacturing Limited |
11 / 13 page Data Sheet 11 Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Application Information 1. This IC has a built-in thermal shutdown circuit that mutes the output current when the chip tem- perature reachs 178oC (Typ). The hysteresis is set to 25oC (Typ), so the driver circuits start up again when the chip temperature falls to 153oC (Typ). 2. The driver buffer is switched off when the supply voltage falls below 3.5V (Typ), and is switched back on when the voltage reaches 3.7V (Typ) again. 3. In case standby pin voltage is under 0.5V or opened, quiescent current is muted. Standby pin voltage should be over 2.0V for normal applica- tion. 4. BIAS pin (pin 27) should be pulled up more than 1.2V. In case bias pin voltage is pulled down under 0.9V (Typ), output current is muted. 5. Insert the by-pass capacitor (approximately 0.1 µF) between V CC-pin and GND-pin as near as possible to this IC. 6. Heat dissipation fins are attached to the GND inside the package. Make sure to connect them to the external GND. Supplement: (Current-feedback driver) The transmission gain (output current/input voltage) is given by: gm=1/(RD + RWIRE) (A/V) RWIRE is the total gold wire resistance inside the package (0.15 Ω ± 0.05Ω ) (Typ). |
Ähnliche Teilenummer - AM5954AM28-E1 |
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Ähnliche Beschreibung - AM5954AM28-E1 |
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