AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Features
• Independent 6-Channel H-Bridge
• Built-in 4 constant voltage drivers, two of
those drivers with brake function.
• Built-in 2 constant current drivers.
• Low on-resistance <1.2
Ω
(typ.)
• Built-in charge pump(to drive the upside
NMOS of H-bridge drivers)
• Low Voltage operation
• Built-in Thermal Shutdown Function
• LQFP-48 Package
Block Diagram
PS
VCC
PGND3 PVCC CP1 CP2
CP3
CP4
VG
General Description
The AT5556 is a 6-channel H-bridge
drivers IC for DSC motor application. It
built in with 4 constant voltage drive and 2
constant current blocks to drive auto-focus,
zoom, shutter, auto-exposure motors.
Applications
•DSC motor Driver
Thermal Shutdown
and
UVLO
Oscillator
Charge
Pump
Charge
Pum p
VM1
OUT1A
OUT1B
OUT2A
OUT2B
PGND1
IN1A
IN1B
IN2A
IN2B
H-Bridge
H -Bridge
Level Shift
IN3A
IN3B
IN4A
IN4B
Logic
Block
H-Bridge
H-Bridge
IN5A
IN5B
IN6A
IN6B
GND
Pre Driver
VM2
OUT3A
OUT3B
OUT4A
OUT4B
PGND2
H-Bridge
H -Bridge
VM3
OUT5A
OUT5B
OUT6A
OUT6B
Vref
Vref
VC1
VC2
VC3
VC4 RFG1
RFG2
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
1
04/12/10
AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Pin Configuration
OUT6A
OUT6B
47
OUT5B
OUT5A
PGND
RFG1
RFG2
48
IN6B
IN6A
IN5B
IN5A
IN4B
IN4A
IN3B
IN3A
IN2B
1
2
3
4
5
6
7
8
9
VM3
45
CP4
CP3
NC
VG
46
44
43
42
41
40
39
38
37
36 CP2
35 CP1
34 PVCC
33 VCC
32 NC
AT5556
31 PS
30 GND
29 VREF
28 VC4
27 VC3
26 VC2
25 VC1
IN2A 10
IN1B 11
IN1A 12
13
PGND1
14
OUT1A
15
OUT1B
16
VM1
17
OUT2A
18
OUT2B
19
OUT3A
20
OUT3B
21
VM2
22
OUT4A
23
OUT4B
24
PGND2
Ordering Information
Part number
Package
AT5556F
LQFP48
AT5556F_PBF LQFP48, PB-Free
AT5556F_GRE LQFP48, Green
AT5556N_GRE
QFN48,Green
Marking
AT5556F
AT5556F, date code with one bottom line
AT5556F, date code with two bottom line
AT5556N
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
2
04/12/10
AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Pin Description
Pin NO. Symbol
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
41
42
43
44
45
46
47
48
IN6B
IN6A
IN5B
IN5A
IN4B
IN4A
IN3B
IN3A
IN2B
IN2A
IN1B
IN1A
PGND1
OUT1A
OUT1B
VM1
OUT2A
OUT2B
OUT3A
OUT3B
VM2
OUT4A
OUT4B
PGND2
VC1
VC2
VC3
VC4
VREF
GND
PS
NC
VCC
PVCC
CP1
CP2
CP3
CP4
VG
PGND
NC
RFG1
OUT5A
OUT5B
VM3
OUT6A
OUT6B
RFG2
I/O
I
I
I
I
I
I
I
I
I
I
I
I
P
O
O
P
O
O
O
O
P
O
O
P
I
I
I
I
I
P
I
P
P
I
I
I
I
P
P
O
O
P
O
O
Description
It combines IN6A to decide the state of the constant current driver6
It combines IN6B to decide the state of the constant current driver6
It combines IN5A to decide the state of the constant current driver5
It combines IN5B to decide the state of the constant current driver5
It combines IN4A to decide the state of the constant voltage driver4
It combines IN4B to decide the state of the constant voltage driver4
It combines IN3A to decide the state of the constant voltage driver3
It combines IN3B to decide the state of the constant voltage driver3
It combines IN2A to decide the state of the constant voltage driver2
It combines IN2B to decide the state of the constant voltage driver2
It combines IN1A to decide the state of the constant voltage driver1
It combines IN1B to decide the state of the constant voltage driver1
GND1
H-bridge output terminal 1A of the constant voltage driver1
H-bridge output terminal 1B of the constant voltage driver1
Power supply for Motor1, 2
H-bridge output terminal 2A of the constant voltage driver2
H-bridge output terminal 2B of the constant voltage driver2
H-bridge output terminal 3A of the constant voltage driver3
H-bridge output terminal 3B of the constant voltage driver3
Power supply for Motor3, 4
H-bridge output terminal 4A of the constant voltage driver4
H-bridge output terminal 4B of the constant voltage driver4
GND2
It is used to control the output voltage of constant voltage driver1~2
It is used to control the output voltage of constant voltage driver3~4
Voltage for current limit control of the constant current driver5
Voltage for current limit control of the constant current driver6
Reference voltage being divided for VC1~4 to individually use
GND
Power save which can force all outputs to become open state
Power supply
Power supply for input voltage of charge pump
Capacitor terminal 1 for charge pump
Capacitor terminal 2 for charge pump
Capacitor terminal 3 for charge pump
Capacitor terminal 4 for charge pump
Output voltage of charge pump
GND
Current detection terminal for the constant current driver5
H-bridge output terminal 5A of the constant current driver5
H-bridge output terminal 5B of the constant current driver5
Power supply for Motor5, 6
H-bridge output terminal 6A of the constant current driver6
H-bridge output terminal 6B of the constant current driver6
Current detection terminal for the constant current driver6
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
3
04/12/10
AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Absolute Maximum Ratings
Item
Supply voltage VCC
Supply voltage VM
Supply voltage PVCC
Charge pump voltage
Control input voltage
Power dissipation
Operating temperature
Junction temperature
Storage temperature range
Maximum output current
Symbol
VCC
VM
PVCC
VG
VIN
Pd
Topr
Tj
Tstg
Iout
Ratings
-0.5 ~ +5.5
-0.5 ~ +5.5
-0.5 ~ +5.5
12
-0.5 ~ VCC
1000
-20 ~ +85
~ +150
-55 ~ +150
800
Unit
V
V
V
V
V
mW
°C
°C
°C
mA
Recommended Operating Conditions(Ta=25°C)
Item
Supply voltage VCC
Supply voltage VM1,2,3
Charge pump voltage
Control input voltage
H Bridge output current
Logic input frequency
Capacitor for Charge
pump
Symbol
VCC
VM1,2,3
VG
VIN
Iout
Fin
CCP
Ratings
+2.5 ~ +5.5
+1.9 ~ +5.5
+7.5~ +10.0
0 ~ VCC
-400 ~ +400
0 ~ 100
0.01 ~ 0.1
Unit
V
V
V
V
mA
kHz
μF
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
4
04/12/10
AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Electrical Characteristic
(Ta=25
°
C
, VCC=PVCC=3.0V, VM=2.5V,
R
L
1
=
R
L
2
=
R
L
3
=
R
L
4
=
7
.
5
Ω
,
R
L
5
=
R
L
6
=
5
Ω
)
Parameter
Symbol
Condition
Values
Unit
Min. Typ. Max.
-
-
0
1.5
10
3
Whole circuits
Circuit current at standby ICCST PS=L
Circuit current1
ICC1 PS=H, IN1A1B~6A6B=L
Circuit current2
ICC2
PS=H
,
IN1A or IN1B or IN2A or
IN2B=H
µ
A
mA
mA
mA
mA
mA
-
-
-
-
2.65
2.65
2.65
4.90
4.7
4.7
4.7
5.5
Circuit current3
Circuit current4
Circuit current5
ICC3
ICC4
ICC5
PS=H
,
IN3A or IN3B or IN4A or
IN4B=H
PS=H, IN5A or IN5B or IN6A or
IN6B=H
PS=H,IN1A=IN2A=IN3A=IN4A
=IN5A=IN6A=H or
IN1B=IN2B=IN3B=IN4B=IN5B
=IN6B=H
Power save
H level input voltage
VPSH
L level input voltage
VPSL
H level input voltage
IPSH PS=3V
L level input voltage
IPSL PS=0V
Pull-down resistance
RIN
Control input
H level input voltage
VINH
L level input voltage
VINL
H level input voltage
IINH VIN=3V
L level input voltage
IINL VIN=0V
Pull-down resistance
RIN
Charge Pump
Charge pump voltage
VCP PVCC=5V,VG=PVCC*2
UVLO
UVLO voltage
VUVLO
Vref
VREF output voltage
VREF Iout=0 ~ 1mA
Constant voltage driver1,2(For AF/STP)
Output ON Resistance
RON Io=+-200mA,
Sum of on-resistance
Output constant voltage
VO1 VC1=0.3V, Rload=7.5
Ω
Constant voltage driver3,4(For ZOOM)
Output ON Resistance
RON Io=+-200mA,
Sum of on-resistance
2.0
-
-
-1
-
2.0
-
-
-1
-
9
1.8
0.88
-
-
5
0
1.5
-
-
5
0
1.5
10
2.0
0.90
1.20
-
0.8
20
-
-
-
0.8
20
-
-
-
2.2
0.92
1.50
1.60
1.50
V
V
µ
A
µ
A
M
Ω
V
V
µ
A
µ
A
M
Ω
V
V
V
Ω
1.40
1.50
1.20
V
Ω
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
5
04/12/10
