TA8420 查看數據表（PDF） - Toshiba

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TA8420

TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC

Toshiba 

TA8420,21AF

TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC

TA8420AF,TA8421AF

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.

Weight : 0.09 g (Typ.)

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.

1

2001-06-13

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