FAN8423D3TF Fairchild Semiconductor, FAN8423D3TF Datasheet - Page 9

• Manufacturer Part Number: FAN8423D3TF
• Description: Motor / Motion / Ignition Controllers & Drivers BLDC Motor Driver 3Phase 5V Interface
• Manufacturer: Fairchild Semiconductor
• Type: 3 Phase BLDC Motor Driverr

Specifications of FAN8423D3TF

• Operating Temperature Classification: Commercial
• Package Type: SSOP
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage: 5 V
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Lead Free Status / Rohs Status: Compliant

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 more heat at the Drive
IC.
To remove this shortcoming and to enhance the braking efficiency, the Short Brake function is added to FAN8423D3. When
the Short Brake function is active, all upper Power TRs turn off and all lower Power TRs turn on. This slows down the motor.
3. Start/stop (Power Save)
When Start/Stop function is active, all Power TRs turn off.
Pin # 18
Pin # 23
High
High
Low
Low
OFF
Start
Stop
ON
Vcc
Vcc
18
23
Short Brake
20K
40K
Start/Stop
1K
30K
Operate
Stop
OFF
ON
ON
OFF
OFF
OFF
Oct. 2000.
Rev. 1.0.1
2
2
4
4
7
7
MOTOR
MOTOR
FAN8423D3
9