General Description
◾ The FD128 series is a direct PWM drive IC with single-phase and bipolar drive. The IC is suitable for variable speed control Fan of PC.

FEATUREs
◾ Single-phase coil driver, applied to fan or motor.
◾ Lock function built-in and a lock detect output signal (RD).
◾ Thermistor or PWM modes are available for speed control.
◾ An external capacitor (CO) is necessary for lock function.
◾ An external capacitor (CP = 47pf) for internal 25KHz saw-tooth wave
◾ Thermal Shutdown built-in.
◾ Hall IC input (INN) can use as rotation output (FG)
◾ Internal minimum speed