BA6402F ROHM Electronics, BA6402F Datasheet - Page 2

• Manufacturer Part Number: BA6402F
• Description: 2-phase Half-wave Motor Predriver
• Manufacturer: ROHM Electronics

FElectrical characteristics (unless otherwise noted, Ta = 25_C and V
FRotational speed sensing and lock detection (6 pin)
The circuit around pin 6 is described in Fig. 1. Normally,
the C
around the Hall signal when the motor is running. When
the motor is locked, discharging does not occur at C
cause the Hall signal stops switching. Charging contin-
ues at C
voltage, and then Q
With the pin-6 current being constant (I
the time required after the motor is locked until the output
current is turned OFF (duration between B and C in Fig.
2) is determined by the C
where V
For C
FOperation notes
(1)
ly), which is directly connected with the IC bias circuit, is
not available when pin 3 is OPEN (saturated).
(2)
The allowable power dissipation is plotted against ambi-
ent temperature in Fig. 3.
690
Motor driver ICs
T
off
=T
Hall constant current source (3 pin, 6.8mA typical-
Power dissipation
6
6
=2.2 F, for example, T
external capacitor is charging or discharging
BXC
6CL
6
until the voltage increases to the pin-6 clamp
=
is pin-6 clamp voltage (nearly equal to 5V
4.12 10
(V
6.8 A (Typ.)
1
6CL
4V
turns ON to turn OFF the output.
*V
5
BE
I
6
6
BEQ3
S C
capacitance.
C
6
off
6
) C
(sec) (Typ.)
is about 0.91s (typical).
6
6
=6.8 A, typical),
6
be-
BE
)
FThermal derating curve
CC
= 12V)
BA6402F