FAN8025G3

9

Application Information

1. Reference Input

• Reference input (PIN 22)

When the reference input voltage goes below 0.7V, all channels are disabled.

2. Stand-by Function

• MUTE input (PIN 23)

We recommend CH1 as the loading(or tray) motor driver. Detailed logic table is as below.

3. Protection Function

Thermal shutdown (TSD)

When 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

4. Separation Of Power Supply

• VCC2 (PIN 24)

VCC2 is the power supply for CH4 and CH5, which are current feedback drivers.

• VCC1 (PIN 19)

VCC1 is the power supply for CH1, CH2, CH3 and predriver.

VCC1 input voltage must be higher than or same to VCC2. (VCC1

INPUT LOGIC

CH1

CH2

CH3

CH4

CH5

Stand-by input

High

OO

OO

O

Low or open

O

X

X

X

X