Fairchild Semiconductor KA3012D02 Datasheet
©2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. 1.0.1
February. 2000.
1
Features
• BTL (H-Bridge type linear) 4channel motor driver
• Wide dynamic range:
-SV
CC
=12V, PV
CC1
=5V, RL=8Ω → VOM=4.2V
-SV
CC
=12V, PV
CC2
=12V, RL=24Ω → VOM=10.4V
• Built in level-shift circuit
• Built in OP-amp for digital input
• Built in thermal shutdown (TSD) circuit
• Three independent sources
• Low crossover distortion
• Built-in reverse rotation prevented
• Built-in short breaker
Description
The KA3012D is a monolithic IC, and suitable for 4-CH
motor driver which drives sled motor, loading motor, focus
& tracking actuator of CD-media system and built in OPamp which can receive digital signal from servo of CDmedia system.
28-SSOPH-375
Typical Applications
• Compact disk ROM (CD-ROM)
• Compact dis k RW (CD-RW)
• Digital video disk ROM (DVD-ROM)
• Digital video disk RAM (DVD-RAM)
• Digital video disk player (DVDP)
• Other compact disk media
Ordering Information
Device Package Operating Temp.
KA3012D-02 28-SSOPH-375 -35 °C ~ 85 °C
KA3012D-02TF 28-SSOPH-375 -35 °C ~ 85 °C
KA3012D
4-Channel Motor Driver
KA3012D
2
Pin Assignments
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1516171819202122232425262728
CH1-O
CH1-O
AMP1-O
AMP1-I (−)
AMP1-I (+)
BIAS
SVCC
GND
MUTE
AMP2-I (+)
AMP2-I (−)
AMP2-O
CH2-O
CH2-O
GND
CH4-O
CH4-O
AMP4-O
AMP4-I (−)
AMP4-I (+)
PVCC1
PVCC2
AMP3-I (+)
AMP3-I (−)
CH3-O
CH3-O
GND
FIN
(GND)
FIN
(GND)
KA3012D
AMP3-O
KA3012D
3
Pin Definitions
Pin Number Pin Name I/O Pin Function Description
1 CH1-O O Drive CH 1 output (−)
2 CH1-O O Drive CH 1 output (+)
3 AMP1-O O Op-amp CH 1 output
4AMP1-I(−) I Op-amp CH 1 input (−)
5 AMP1-I(+) I OP-amp CH 1 input (+)
6 BIAS I Bias input
7 SVCC - Supply voltage (Signal)
8 GND - Ground
9MUTEIMute
10 AMP2-I(+) I OP-amp CH 2 input (+)
11 AMP2-I(−) I Op-amp CH 2 input (−)
12 AMP2-O O Op-amp CH 2 output
13 AMP2-O O OP-amp CH 2 output (+)
14 CH2-O O Op-amp CH 2 output
(Op-amp CH 2 output)
15 GND - Ground
16 CH3-O O Drive CH 3 output (−)
17 CH3-O O Drive CH 3 output (+)
18 AMP3-O O OP-amp CH 3 output
19 AMP3-I(−) I Drive CH 3 input (−)
20 AMP3-I(+) I Drive CH 3 input (+)
21 PVCC2 - Supply voltage (CH 2 & CH 3)
22 PVCC1 - Supply voltage (CH1 & CH 4)
23 AMP4-I(+) I OP-amp CH 4 input (+)
24 AMP4-I(−) I Op-amp CH 4 input (−)
25 AMP4-O O Op-amp CH 4 output
26 CH4-O O Drive CH 4 output (+)
27 CH4-O O Drive CH 4 output (−)
28 GND - Ground
KA3012D
4
Internal Block Diagram
NOTE:
The drive channel outputs are determined pre OP-amp output.
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1516171819202122232425262728
10k
10k 10k
10k10k
10k
10k
10k
10k 10k
10k10k
10k 10k
10k10k
10k
20k
10k
20k
10k
10k10k
10k
GND
PV
CC1
/2
GND
MUTE
TSD
PV
CC2
/2
PV
CC2
/2
GND
SV
CC
PV
CC1
/2
PV
CC2
/2
PV
CC2
/2
PV
CC1
/2
+−+
−
−
+
+
−
+
−
− +
++
−−
+
−
LEVEL-SHIFT
−
+
LEVEL-SHIFT
−
+
−
+
+
−
−
+
+
−
LEVEL-SHIFT
+
−
LEVEL-SHIFT
−
++
−
+
−
++
−−
PV
CC2
PV
CC1
CH1-O
CH1-O
AMP1-O
BIAS
SVCC
GND
MUTE
AMP2-I (+)
AMP2-I (−)
AMP2-O
CH2-O
CH2-O
GND
CH3-O
CH3-O
AMP3-O
AMP3-I (−)
AMP3-I (+)
PVCC1
PVCC2
AMP4-I (+)
AMP4-I (−)
AMP4-O
CH4-O
CH4-O
GND
AMP1-I (−)
AMP1-I (+)
GND
GND
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