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KA3014
Spindle + 4-CH Motor Driver
Features
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Built-in power save circuit
Built-in current limit circuit
Built-in thermal shutdown circuit (TSD)
Built-in hall bias
Built-in FG signal output circuit
Built-in rotational direction detecting circuit
Built-in protection circuit for reverse rotation
Built-in short brake circuit
Built-in variable-regulator
Built-in 4-CH balanced transformerless (BTL) driver
Built-in BTL mute circuit (CH1/2, CH3 and CH4)
Corresponds to 3.3V DSP
Description
The KA3014 is a monolithic integrated circuit suitable for a
4-ch motor driver which drives the tracking actuator, focus
actuator, sled motor, loading motor and 3-phase BLDC spin-
dle motor of the MDP/CAR-MD/CAR-NAVIGATION sys-
tem.
48-QFPH-1414
Target Application
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Mini disk player
Digital video disk player
Car mini disk player
Car navigation system
Ordering Information
Device
KA3014
Package
48-QFPH-1414
Operating Temp.
−35°C
~ +85°C
Rev. 1.0.2
May. 2000.
©2000 Fairchild Semiconductor International
1
KA3014
Pin Definitions
Pin 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
29
30
31
Pin Name
VH
FG
ECR
EC
VCC2
PC1
SIGGND
VM
CS1
S/S
DIR
SB
PWRGND
A3
A2
A1
RESX
VREGX
REGOX
VCC1
AVM12
DI4
DI3
DI2
DI1
DO1−
DO1+
DO2−
DO2+
BTLPGND1
BTLPGND2
I/O
I
O
I
I
-
-
-
-
I
I
O
I
-
O
O
O
I
O
O
-
-
I
I
I
I
O
O
O
O
-
–
Hall bias
FG signal output
Torque control reference
Torque control signal
Supply voltage
Phase compensation capacitor
Signal ground
Motor supply voltage
Current sensor
Start/stop
3-phase rotational direction output
Short brake
Power ground
3-phase output 3
3-phase output 2
3-phase output 1
Variable regulator reset
Variable regulator
Variable regulator output
Supply voltage
BTL CH-1, 2 motor supply voltage
BTL drive input 4
BTL drive input 3
BTL drive input 2
BTL drive input 1
BTL drive 1 output (−)
BTL drive 1 output (+)
BTL drive 2 output (−)
BTL drive 2 output (+)
BTL power ground 1
BTL power ground 2
Pin Function Descrition
3
KA3014
Pin Definitions (Continued)
Pin Number
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin Name
DO3–
DO3+
AVM3
DO4–
DO4+
MUTE4
MUTE3
MUTE12
AVM4
BIAS
BTLSGND
H1–
H1+
H2–
H2+
H3–
H3+
I/O
O
O
–
O
O
I
I
I
–
–
–
I
I
I
I
I
I
Pin Function Descrition
BTL drive 3 output (–)
BTL drive 3 output (+)
BTL CH3 motor supply voltage
BTL drive 4 output (–)
BTL drive 4 output (+)
BTL drive mute CH 4
BTL drive mute CH 3
BTL drive mute CH 1, 2
BTL CH 4 motor supply voltage
BTL bias voltage
BTL drive signal ground
Hall1(–) input
Hall1(+) input
Hall2(–) input
Hall2(+) input
Hall3(–) input
Hall3(+) input
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