FAN8725 Fairchild Semiconductor, FAN8725 Datasheet - Page 12

• Manufacturer Part Number: FAN8725
• Description: Motor / Motion / Ignition Controllers & Drivers BTL Motor Drive IC 3Phase BLDCM+5CH
• Manufacturer: Fairchild Semiconductor
• Type: Spindle Motorr

Specifications of FAN8725

• Operating Temperature Classification: Commercial
• Package Type: QFPH
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 13.2V
• Operating Supply Voltage: 15 V
• Supply Current: 0.6 A
• Mounting Style: SMD/SMT
• Package / Case: QFPH-48
• Operating Temperature: - 35 C to + 85 C
• Lead Free Status / RoHS Status: Compliant

FAN8725 (KA3025)
2. SHORT BRAKE
When the pick-up mechanism moves from the inner to the outer spindle of the CD, the Brake function of the reverse voltage is
commonly employed to decrease the rotating velocity of the Spindle Motor.
However, if the Spindle Motor rotates rapidly, the Brake function of the reverse voltage may produce much heat at the Drive
IC.
To enhance the braking efficiency, the Short Brake function is added to FAN8725. When the Short Brake function is activated,
all upper Power TRs turn off and all lower Power TRs turn on, so as to make the rotating velocity of the motor slow down. But
FG and DIR functions continue to operate normally.
3. POWER SAVE
When PowerSave(PS) function is activated, the chip is deactivated.
Pin # 43
Pin # 44
HIGH
HIGH
LOW
LOW
OFF
ON
Vcc
43
Short Brake
Motor Drive Ouput Activated
20K
1K
OFF
ON
Start
Stop
Power Save
Sleep mode
Vcc
44
40K
30K
ON
OFF
12
13
IC bias
14
15
MOTOR