www.fairchildsemi.com
KA3011BD
3-Phase BLDC Motor Driver
Features
• 3-phase, full-wave,
linear BLDC motor driver
• Power save at stop mode
• Built-in current limiter
• Built-in TSD (Thermal shutdown) circuit
• Built-in 3X or 1X hall FG output
• Built-in hall bias circuit
• Built-in rotational direction detector
• Built-in reverse rotation preventer
• Built-in short braker
•
Corresponds to 3.3V or 5V DSP
Description
The KA3011BD is a monolithic IC, suitable for a 3-phase
spindle motor driver of a CD-media system.
28-SSOPH-375
Typical Applications
• Compact disk ROM (CD-ROM) spindle motor
• Compact disk RW (CD-RW) spindle motor
• Digital video disk ROM (DVD-ROM) spindle motor
• Digital video disk RAM (DVD-RAM) spindle motor
• Digital video disk Player (DVDP) spindle motor
• Other compact disk media spindle motor
• Other 3-phase BLDC motor
Ordering Information
Device
KA3011BD
Package
28-SSOPH-375
Operating Temp.
−25°C
~ +75°C
−25°C
~ +75°C
KA3011BDTF 28-SSOPH-375
Rev. 1.0.1
February. 2000.
©2000 Fairchild Semiconductor International
1
KA3011BD
Pin Assignments
VCC
ECR
CS1
FGS
VM
NC
FG
EC
NC
16
13
H3+
VH
15
14
H3−
SB
18
11
H2+
FIN(GND)
PC1
17
12
H2−
S/S
DIR
20
9
H1+
28
27
26
25
24
23
22
21
19
KA3011BD
1
NC
2
A3
3
NC
4
A2
5
NC
6
NC
7
A1
FIN(GND)
8
GND
10
H1−
Pin Definitions
Pine Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pin Name
NC
A3
NC
A2
NC
NC
A1
GND
H1+
H1−
H2+
H2−
H3+
H3−
VH
NC
PC1
SB
FGS
DIR
ECR
EC
S/S
FG
VCC
NC
VM
CS1
I/O
-
O
-
O
-
-
O
-
I
I
I
I
I
I
I
-
-
I
I
O
I
I
I
O
-
-
-
-
No connection
Output (A3)
No connection
Output (A2)
No connection
No connection
Output (A1)
Ground
Hall signal (H1+)
Hall signal (H1−)
Hall signal (H2+)
Hall signal (H2−)
Hall signal (H3+)
Hall signal (H3−)
Hall bias
No connection
Phase compensation capacitor
Short brake
Frequency generation selection
Rotational direction output
Output current control reference
Output current control voltage
Power save (Start/Stop switch)
Frequency generation waveform (3X or 1X hall frequency)
Supply voltage (Signal)
No connection
Supply voltage (Motor)
Output current detection
2
Pin Function Description
KA3011BD
Absolute Maximum Rating (Ta=25°C)
°
Parameter
Maximum supply voltage (Signal)
Maximum supply voltage (Motor)
Power dissipation
Maximum output current
Operating temperature range
Storage temperature range
Symbol
V
CCmax
V
Mmax
P
D
I
Omax
T
OPR
T
STG
Value
7
18
1.7
note
1.3
−25
~ +75
−55
~ +150
Unit
V
V
W
A
°C
°C
NOTE:
1. When mounted on 76.2mm
×
114mm
×
1.57mm PCB (Phenolic resin material)
2. Power dissipation is reduced 13.6 mW /
°C
for using above Ta=25°C
3. Do not exceed P
D
and SOA (Safe operating area).
Power Dissipation Curve
Pd (mW)
3,000
2,000
1,000
0
SOA
0
25
50
75
100
125
150
175
Ambient temperature, Ta [°C]
Recommended Operating Conditions (Ta=25°C)
°
Parameter
Supply voltage
Motor supply voltage
Symbol
V
CC
V
M
Min.
4.5
3.0
Typ.
5
12
Max
5.5
15
Units
V
V
5
PCB Design
京公网安备 11010802033920号
EEWORLD
