FAN8024BD Ver la hoja de datos (PDF) - Fairchild Semiconductor

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FAN8024BD

4-Channel Motor Driver

Fairchild Semiconductor 

FAN8024BD

Application Information

1. Reference Input & Stand-by Function

• Reference input (PIN 27)

The applied voltage at the reference input pin must be between 0.8V and 6.5V, when VCC=8.5V.

• Stand-by input (PIN 28)

The following input conditions must be satisfied for the normal stand-by function.

Stand-by input voltage

Stand-by input voltage

Below 0.5V or OPEN

Above 2.0V

Stand-by function is activated so the bias block and the

power block are disabled

Normal operation

2. Protection Function

Thermal shutdown (TSD)

If the chip temperature rises above 175°C, the thermal shutdown (TSD) circuit is activated and the output circuit is in the mute

state, that is off state. The TSD circuit has a temperature hysteresis of 25°C

3. Separation Of Power Supply

• PVCC1 (PIN 9)

PVCC1 is the power supply for loading driver. The range is between 5V ~ 12V.

• PVCC2 (PIN 21)

PVCC2 is the power supply for actuator drivers that include focus and tracking actuators. The range is between 5V ~ 12V

• VCC (PIN 8)

VCC pin supplies power for sled driver and signal logic part. The voltage applied to VCC must be higher than PVcc1

and PVCC2 at least 1V

8

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