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KA3050
Camera Motor Drive and Control IC
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 VE selector • Built-in VE voltage detector • Built-in 5V regulator • Built-in step-up DC/DC converter controller
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
Ordering Information
Device KA3050 Package 48-QFP-1010E Operating Temp. −20°C ~ +50°C
Rev. 1.0.1 February. 2000.
©2000 Fairchild Semiconductor International
KA3050
Pin Assignments
S-GND1
S-VE
P-VE
P-VE
DEO
RBT
BTS
VDS
36
35
34
33
32
31
30
29
28
27
26
25
FMO
FBR
FMI
IRI
VDD VDI VCC
37 38
24 23
P-GND2
IRO
39
22
DM1
MC1
40
21
DM2
MC2
41
20
DM3
MC3 MC4
42
19
P-GND2 SM1
43
KA3050
18
S-GND2 SC1
44
17
SM2
45
16
SM3 SM4
SC2
46 47
15 14
SC3
SM5 P-GND1
SC4
48
13
1 SEL
2 NES
3 PTR
4 NEC
5 TRI
6 MGI
7 P-GND1
8 VSI
9 VSI
10 OSC
11 TRO
12 MGO
2
KA3050
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 32 33 34 35 36 37 38 39 40 Pin Name SEL NES PTR NEC TRI MGI P-GND1 VSI VSI OSC TRO MGO P-GND1 SM5 SM4 SM3 SM2 SM1 P-GND2 DM3 DM2 DM1 IRO P-GND2 FMO FBR P-VE P-VE S-VE S-GND1 IRI FMI VDS BTS RBT DEO VDD VDI VCC MC1 IC on/off Comparator input PNP open collector output PNP open collector output Trigger input Magnet drive input Power ground 1 Step motor & AE meter power Step motor & AE meter power NPN open collector output PNP open collector output Magnet drive output (NPN open collector output) Power ground 1 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 Power ground 2 DC motor output 3 DC motor output 2 DC motor output 1 IRED drive output Power ground 2 Step-up converter switching output IRED feedback input Power VE (Battery power) Power VE (Battery power) Signal VE (Battery power) Signal ground 1 IRED control input Step-up converter clock input VDD selection (4V/5V) Battery selection (3V/6V) VE voltage detection output(analog) VE voltage detection output(digital) Inside power & outside power output Step-up voltage Motor drive IC power & control block power (5V) output MC code input 1 Pin Function Description
3
KA3050
Pin Definitions (Continued)
Pin Number 41 42 43 44 45 46 47 48 Pin Name MC2 MC3 MC4 S-GND2 SC1 SC2 SC3 SC4 MC code input 2 MC code input 3 MC code input 4 Signal ground 2 SC code input 1 SC code input 2 SC code input 3 SC code input 4 / buffer output Pin Function Description
Internal Block Diagram
P_VE S_VE 29 28 27 FMO 25 VDI 38 VCC 39 DM1 22 DM2 21 DM3 20 VSI 9 VSI 8 SM1 18 SM2 17 SM3 16 SM4 15 SM5 14 IRO 23 FBR 26 OSC NEC NESPTR MGO 10 4 2 3 12 TRO 11
REG1
I RED Drive Block NPN Open Collector Output PNP Open Collector Output PNP Open Collector Output
NPN Open Collector Output 6 MGI
VDS
33 VE/VDD Detect
IRED/ Stepping Motor Current PFM DC/DC Control
P-GND1 7 P_GND2 19
13 24
S-GND 30
44
Motor or Strobo Control Block
1 SEL
34 BTS
36 DEO
32
35
40 MC1
41 MC2
42 MC3
43 MC4
45 SC1
46 SC2
47 SC3
48 SC4
31 IRI
Comparator Input
VDD
37
REG1
FMI RBT
4
PNP Open Collector Output 5 TRI
KA3050
Equivalent Circuits
Description MC1~4 SC1~4 DM1 DM2 DM3 P_VE P_GND Pin No. 40~43 45~48 22 21 20 27,28 7, 13, 19, 24
MC1 MC2 MC3 MC4 SC1 SC2 SC3 SC4
40 41 42 43 45 46 47 48
Internal Circuit
1.5-Channel DC Motor Drive Block
P_VE
27 28
MC1~MC4
DM3 DC Motor Control Block
20
DM2
21 22
DM1
SC1~SC4
7
13 19 24
P_GND
Stepping Motor Drive Block MC1~4 SC1~4 SM1 SM2 SM3 SM4 SM5 VSI P_GND MC1~4 SC1~4 IRO FBR 40~43 45~48 18 17 16 15 14 8, 9 7, 13, 19, 24 40~43 45~48 23 26
MC1 MC2 MC3 MC4 SC1 SC2 SC3 SC4
40 41 42 43 45 46 47 48 26
VSI MC1 MC2 MC3 MC4 SC1 SC2 SC3 SC4
40 41 42 43 45 46 47 48
8
9
MC1~MC4
Step Motor Control Block
SC1~SC4
SM1
18
SM2
17 16
SM3
SM4
15 14
SM5
P_GND 19
7
13 24
IRED Drive Block
IRO
23
IRI
31
MC1~MC4 IRED Control Block
SC1~SC4
FBR
5
KA3050
Equivalent Circuits (Continued)
Description FMI VDI FMO P_GND Pin No. 32 38 25 7, 13, 19, 24
Q Q S R
32 7 13 25
Internal Circuit
Step-up Control Block
FMO
38
VDI
Vref
FMI
19 24
P_GND
General Buffer & Comparator Drive Block
12
MC1~4 SC1~3 MGI MGO NES SC4 TRI TRO PTR NEC OSC P_GND
40~43 45~47 17 16 2 48 5 11 3 4 10 7, 13, 19, 24
MC1 MC2 MC3 MC4 SC1 SC2 SC3
40 41 42 43
MGI
MGO
6
NES
2 48
SC4
VDD*0.3 VCC TRI
5
Buffer Control Block
11
TRO
MC1~MC4
3
PTR NEC OSC
45 46 47
4
SC1~SC3
10
7
13
19 24
P_GND
6
KA3050
Absolute Maximum Ratings (Ta = 25°C)
Parameter Supply voltage Output current (VDD) Output cur.