1 CHIP DC FAN MOTOR DRIVER

The TA8420AF and TA8421AF are fan motor drive ICs.
The output current for these ICs is 1.0 A (average). The ICs incorporate all functions necessary for fan motors. By substantially reducing peripheral components, the ICs save space and enhance miniaturization.
TA8420AF has an FG output Pin (outputs FG signals in proportion to the number of rotations). TA8421AF has an RD terminal that detects the state of the motor (that is, rotating or stopped). In other respects, the two ICs are the same.

FEATURES
● Build−in Lock Sensing Circuit (Over Heat Protector for Drive Coil).
● Build−in Automatic Self Rotation Recovery Circuit After Release of Motor Locking.
● Operating Voltage : VCC (opr) = 4~15 V
● Output Current : IO = 1.0 A (AVE)
● Thermal Shutdown Circuit Incorporated.
● Suitable for Super Micro Fan Motor.
● Surface Mountable MFP 10 Package Sealeded.
● Less External Component.
● TA8420AF has FG (Frequency Generator) Out for Rotation Speed Sense and TA8421AF has RD (Rotation Detect) Out for Rotate or Stop Sense.