BA6444FP Rohm, BA6444FP Datasheet
BA6444FP
Available stocks
Related parts for BA6444FP
BA6444FP Summary of contents
Page 1
... BA6444FP The BA6444FP is a 3-phase, full-wave, pseudo-linear motor driver suited for VCR capstan motors. The IC has a torque ripple cancellation circuit to reduce wow and flutter, and a forced brake circuit that allows abrupt change of operational mode. The output transistor saturation prevention circuit provides superb torque control over a wide range of current. ...
Page 2
... Motor driver ICs FBlock diagram BA6444FP 635 ...
Page 3
... Motor driver ICs FPin descriptions 636 BA6444FP ...
Page 4
... Resistances are typical values. Note that the resistance values can vary "30 pin (2 pin) 3) Motor output (A1: 5 pin, A2: 6 pin, A3: 9 pin pin (12 pin) 2) BRK pin (3 pin and E pins (10 pin, 11 pin Hall signal input pins ) * ) ( pin pin pin pin pin) BA6444FP : 25 pin, 637 ...
Page 5
... Motor driver ICs 7) Schmitt trigger amplifier pins (17 pin, 16 pin) 8) Amplifier pins (20 pin, 19 pin, 18 pin) 638 BA6444FP ...
Page 6
... Motor driver ICs FElectrical characteristics (unless otherwise noted 25_C, V BA6444FP = 5V 12V 639 ...
Page 7
... This circuit monitors the output voltage and maintain the operation of the output transistors below their saturation levels. Operating the transistors in the linear characteris- tic range provides good control over a wide range of cur- rent and good torque characteristics even during over- loading. recom- BA6444FP offset) is the voltage ap- TL ...
Page 8
... denoted as V2. The ripple cancellation ratio is then given by 100 (%) (7) Brake pin The brake pin threshold depends on the chip tempera- ture as shown in Fig. 16. Make sure that your application will work properly when using the IC at low or high tem- peratures. value for the Hall BA6444FP 641 ...
Page 9
... Motor driver ICs FApplication example 642 BA6444FP ...
Page 10
... Motor driver ICs FOperation notes (1) Thermal shut down circuit The BA6444FP has a thermal shutdown circuit to protect the IC. The shutdown temperatures is 175_C (typical) with a hysteresis width of 45_C (typical). When the circuit is activated due to an increased in chip temperature, the output pins (pins 5, 6 and 9) are set to the open state ...
Page 11
... Motor driver ICs FExternal dimensions (Units: mm) 644 BA6444FP ...