Fairchild Semiconductor KA3050 Datasheet
KA3050
Camera Motor Drive and Control IC
www.fairchildsemi.com
Features
• Built-in DC motor driver
: 1.5-CH DC motor driver : CW, CCW & Brake
• Stepping motor driver
• Built-in strobo control
• Built-in IRED driver for auto-focus
• Built-in V
• Built-in V
• Built-in 5V regulator
• Built-in step-up DC/DC converter controller
selector
E
voltage detector
E
Description
The KA3050 is a monolithic integrated circuit, and suitable
for the motor driver (AE, AF, zoom and reel motor driver)
and the controller (strobo trigger, IRED driver, supply voltage detector, step-up converter control, etc.) in camera systems.
48-QFP-1010E
Typical Applications
• Camera system
©2000 Fairchild Semiconductor International
Ordering Information
Device Package Operating Temp.
KA3050 48-QFP-1010E −20°C ~ +50°C
Rev. 1.0.1
February. 2000.
KA3050
Pin Assignments
37
V
DD
DS
FMI
IRI
S-GND1
DEO
RBT
BTS
V
36 35 34 33 32 31 30 29 28 27 26 25
S-VEP-VEP-VEFBR
FMO
P-GND2
24
V
V
MC1
MC2
MC3
MC4
S-GND2
SC1
SC2
SC3
SC4
CC
MGO
23
IRO
22
DM1
21
DM2
20
DM3
19
P-GND2
SM1
18
17
SM2
16
SM3
SM4
15
14
SM5
13
P-GND1
38
DI
39
40
41
42
43
44
45
46
47
48
123456789101112
SEL
PTR
NES
NEC
KA3050
TRI
MGI
P-GND1
SIVSI
V
OSC
TRO
2
Pin Definitions
Pin Number Pin Name Pin Function Description
1 SEL IC on/off
2 NES Comparator input
3 PTR PNP open collector output
4 NEC PNP open collector output
5 TRI Trigger input
6 MGI Magnet drive input
7 P-GND1 Power ground 1
8V
9V
SI
SI
10 OSC NPN open collector output
11 TRO PNP open collector output
12 MGO Magnet drive output (NPN open collector output)
13 P-GND1 Power ground 1
14 SM
15 SM
16 SM
17 SM
18 SM
5
4
3
2
1
19 P-GND2 Power ground 2
20 DM
21 DM
22 DM
3
2
1
23 IRO IRED drive output
24 P-GND2 Power ground 2
25 FMO Step-up converter switching output
26 FBR IRED feedback input
27 P-V
28 P-V
29 S-V
E
E
E
30 S-GND1 Signal ground 1
31 IRI IRED control input
32 FMI Step-up converter clock input
33 V
DS
34 BTS Battery selection (3V/6V)
35 RBT V
36 DEO V
37 V
38 V
39 V
40 MC
DD
DI
CC
1
Step motor & AE meter power
Step motor & AE meter power
Step motor & AE meter output 5
Step motor & AE meter output 4
Step motor & AE meter output 3
Step motor & AE meter output 2
Step motor & AE meter output 1
DC motor output 3
DC motor output 2
DC motor output 1
Power VE (Battery power)
Power VE (Battery power)
Signal VE (Battery power)
VDD selection (4V/5V)
voltage detection output(analog)
E
voltage detection output(digital)
E
Inside power & outside power output
Step-up voltage
Motor drive IC power & control block power (5V) output
MC code input 1
KA3050
3
KA3050
Pin Definitions (Continued)
Pin Number Pin Name Pin Function Description
41 MC
42 MC
43 MC
2
3
4
MC code input 2
MC code input 3
MC code input 4
44 S-GND2 Signal ground 2
45 SC
46 SC
47 SC
48 SC
1
2
3
4
SC code input 1
SC code input 2
SC code input 3
SC code input 4 / buffer output
Internal Block Diagram
P_V
E
28
S_V
29 27 25 39 22 21 20 938 8 17 16 15 14 2318 26 4 2 3 12 1110
FMO VDIVCCDM1DM2DM3VSIVSISM1SM2SM3SM4SM5IRO FBR OSC NEC NESPTR MGO TRO
E
REG1
P-GND1
P_GND2
S-GND
VDD
3733REG1
VDS
13
7
24
19
44
30
VE/VDD
Detect
PFM
DC/DC
1
SEL BTS DEO FMI RBT MC
3634
32 35
I RED
Drive
Block
IRED/
Stepping
Motor
Current
Control
Motor or Strobo Control Block
1MC2MC3MC4SC1SC2SC3SC4
PNP Open Collector Output
NPN Open Collector Output
31
4847464543424140
IRI MGI TRI
Comparator Input
PNP Open Collector Output
NPN Open Collector Output
6 5
PNP Open Collector Output
4
Equivalent Circuits
Description Pin No. Internal Circuit
1.5-Channel DC Motor Drive Block
MC
1~4
SC
1~4
DM
1
DM
2
DM
3
P_V
E
P_GND 7, 13, 19, 24
Stepping Motor Drive Block
MC
1~4
SC
1~4
SM
1
SM
2
SM
3
SM
4
SM
5
V
SI
P_GND 7, 13, 19, 24
IRED Drive Block
MC
1~4
SC
1~4
IRO 23
FBR 26
40~43
45~48
22
21
20
27,28
40~43
45~48
18
17
16
15
14
8, 9
40~43
45~48
MC
MC
MC
MC
SC
SC
SC
SC
P_V
E
28
27
40
MC
1
41
MC
2
MC1~MC
SC1~SC
4
DC Motor Control
4
Block
24
19137
MC
MC
SC
SC
SC
SC
42
3
43
4
45
1
46
2
47
3
48
4
P_GND
98
V
SI
40
1
41
2
MC1~MC
SC1~SC
MC
MC
MC
MC
SC
SC
SC
SC
4
Step Motor Control
4
IRI
40
1
41
2
MC1~MC
42
3
43
4
45
1
46
2
SC1~SC
47
3
48
4
Block
P_GND
31
4
4
SM
1
18 17 16
137
24
19
IRED Control Block
42
3
43
4
45
1
46
2
47
3
48
4
DM
SM
2
3
DM
3
20 21 22
SM
2
IRO
FBR
DM
SM4SM
15 14
23
26
KA3050
1
5
5
KA3050
Equivalent Circuits (Continued)
Description Pin No. Internal Circuit
Step-up Control Block
FMI 32
V
DI
38
FMO 25
P_GND 7, 13, 19, 24
25
FMO
V
DI
38
General Buffer & Comparator Drive
Block
MC
SC
1~4
1~3
40~43
45~47
MGI 17
MGO 16
NES 2
SC
4
48
TRI 5
TRO 11
PTR 3
NEC 4
OSC 10
MC
MC
MC
MC
SC
SC
SC
S
Vref
QQR
32
VCC
FMI
12
48
11
3
4
10
MGO
SC
TRO
PTR
NEC
OSC
4
7
13
P_GND
19
24
6
MGI
2
NES
VDD*0.3
5
4
3
Buffer Control
Block
TRI
40
1
41
2
MC1~MC
42
3
43
4
45
1
46
SC1~SC
2
47
3
P_GND 7, 13, 19, 24
6
7
13
P_GND
19
24
Absolute Maximum Ratings (Ta = 25°°°°C)
Parameter Symbol Value Unit Remark
Supply voltage V
Output current (V
Output current (V
Output current (Stepping motor) I
Output current (AE meter) I
)I
DD
)I
CC
SM1, 2, 3, 4
SM4, 5
Current (DC motor) I
Output current (IRO) I
Output current (MGO) I
MGO
Output terminal voltage V
Input terminal voltage V
Power dissipation P
Operating temperature range T
Storage temperature T
E
VDD
VCC
DM
IRO
OUT
IN
D
OPR
STG
−0.3 ~ +7.5 V
80 mA
50 mA
500 mA Within 70ms
1000 mA Within 70ms
3000 mA Within 10ms
2000 mA Within 500µs
500 mA Within 200ms
−0.3 ~ +7.5 V
−0.3 ~ +7.5 V
1.0 W
−20 ~ +50 °C
−55 ~ +125 °C
Power Dissipation Curve
KA3050
Power dissipation (W)
1.0
0.8
25 50 150
Recommended Operating Conditions (Ta = 25°°°°C)
Parameter Symbol Min. Typ. Max. Unit
Operating Supply Voltage V
E
2.0 - 7.5 V
Ambient temperature, Ta (°C)
7
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