BA6849 ROHM [Rohm], BA6849 Datasheet - Page 11

• Manufacturer Part Number: BA6849
• Description: 3-phase motor driver for CD-ROMs
• Manufacturer: ROHM [Rohm]

FOperation notes
(1)
The power save input is an I / O circuit like the own
shown in Fig.1.
The thermal derating characteristics of the power save
pin is –8mV / _C, and the resistance will fluctuate be-
tween 30% so be careful of the input voltage range.
(2)
The input circuit shown in Fig.4 is used for the Hall inputs.
The Hall elements can be connected either in series or
in parallel.
FElectrical characteristics curves
Motor driver ICs
Power save
Hall input
BA6849FP / BA6849FP-Y / BA6849FM / BA6849FS
(3)
When the junction temperature reaches 175_C, the A
A
down has approximately 15_C of hysteresis.
2
, and A
Thermal shutdown (TSD)
3
coil outputs go open circuit. The thermal shut-
873
1
,