ka3080bdtf Fairchild Semiconductor, ka3080bdtf Datasheet - Page 11

• Manufacturer Part Number: ka3080bdtf
• Description: 3-phase Bldc Motor Driver
• Manufacturer: Fairchild Semiconductor

Application Information (32-SDIPH:
1. Hall Input
The input signal of the hall sensor requires larger amplitude than 100mVo-p. The operating voltage level of the hall sensor is
from 1.2V ~ V
2. Output Current Detection
The R
which is feedback amplifier.
3. Motor Speed Control (Input Current Limitation)
The maxmum output current is limitted by the I
If current limitation is not in use then connect it to V
The control gain is approx. 0.67A/V as follows.
GML = I
S
(Output current sensing resistor ) is connected to G
O
/ V
CC1
(15)
(17)
(19)
LIM
-0.8V.
1
3
5
= (I
O2
I
O1
) / (V
LIM2
LIM
V
LIM1
(Current limiting) voltage.
CC1
), where V
.
2
4
6
OUT
(16)
(18)
(20)
R
, 28-SSOPH: (#))
S
V
(0.5 )
and Approx. 0.5 , It converts motor current to a voltage
LIM1
LIM2
16
= 1.45V
= 1.55V
(22 Pin)
(1) V
11
13
VCC1
CC2
(26) U
14
OUT
12
(27) V
(25 Pin)
Output current=I
Output current=I
15
OUT
(28) W
OUT
More than 1.7V
More than 100mVo-p
More than 1.3V
KA3080/KA3080D/KA3080DM
O1
O2
11