BD7902CFS

Optical disc ICs

17/17

(3) Reverse-rotation braking

In the case of reverse-rotation braking from high speed rotation, pay good attention to reverse electromotive force.

Furthermore, fully check the voltage to be applied to the output terminal and consider the revolutions applied to the

reverse-rotation brake.

(4) Bypass capacitor

Please connect a bypass capacitor (0.1

µF) across the supply voltage lines close to the IC pins.

(5) Supply fault, ground fault, and short-circuit between output terminals

Do not short-circuit between any output pin and supply pin (supply fault) or ground (ground fault), or between any

output pins (load short-circuit). When mounting the IC on the circuit board, be extremely cautions about the

orientation of the IC. If the orientation is mistaken, the IC may break down, and produce smoke in some cases.

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Electrical characteristic curves

0

100

75

50

25

125

150

2

0

1

3

AMBIENT TEMPERATURE : Ta (

°C)

Fig.4 Power dissipation

2.6W

∗ On less than 25.7% (percentage occupied by copper foil),

70

×70mm2, t=1.6mm glass epoxy mounting.

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External dimensions (Units : mm)

SSOP-A54

0.1

0.8

127

54

28

22.0

±0.2

6.0

±0.2

0.36

±0.1

0.15

±0.1