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PDF AT5557 Data sheet ( Hoja de datos )
| Número de pieza | AT5557 | |
| Descripción | Serial Input 6CH Motor Driver | |
| Fabricantes | Aimtron Technology | |
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AT5557
Preliminary Product Information
Serial Input 6CH Motor Driver for DSC
Features
• Built in 5 full-swing/constant voltage drivers
switched by serial control, three of those
drivers being with brake function.
• Built in 1 constant current driver for shutter.
• Low on-resistance(1.2 , sum of
on-resistance of upside and bottom side)
• Build-in thermal shutdown (TSD, 15 )
• CH1~CH4 corresponds to control of 2-2
phase or 1-2 phase.
• All power supply systems(VCC, VM ～4)
can be set up with an independent power
supply.
• Power save mode corresponds by serial
control setup and exterior pin control.
• All initial serial control setting is set to “0”,
so IC can work if power save pin pulls high.
• The reference voltage, Vref, to be divided for
exterior VC setup.
• VC can be setup in DAC from built-in
voltage 1V.
• PI (photo interrapter drive) 2CH built-in. ON
resistance change is possible.
• Small 40QFN (6 6mm) is adopted.
General Description
AT5557 is a 6-channel H-Bridge motor drivers
IC for the digital camera and so on.
It has five full-swing/constant voltage drivers
and one constant current driver. AT5557 can be
operated in serial control mode or full exterior
control mode. When operating in full exterior
control mode, the mode of each CH is fixed by
initial serial control setting. When operating in
serial control mode, the mode of each driver can be
setting by serial control.
Applications
• Stepping motor driver/ DC motor driver
motor driver for DSC
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/15/2006 REV:1.0
Email: [email protected]
1
1 page  
AT5557
Preliminary Product Information
Serial Input 6CH Motor Driver for DSC
L Level Input voltage
VINL
- - 0.8 V
H Level Input current
INH
- 5 20 µA
L Level Input current
INL
-1 0
- µA
Pull-down Resistance
RIN
- 1.5 - MΩ
UVLO
UVLO
VUVLO
1.7 2.0 2.3 V
Power-On-Reset Voltage VRESET
0.8 1.6 2.4 V
Vref
VREF Output Voltage
VREF Iout=0 ~ 1mA
0.98 1.0 1.02 V
CH1~CH5 Divers
Output ON Resistance
RON
Iout=+-200mA,
Sum of on-resistance
- 1.25 1.8 Ω
Output Constant Voltage 1
Vout1
VC=1V (exterior VC setup), DAC:
4V, No-load
3.79
4.00
4.21
V
Output Constant Voltage 2
Vout2
VC=internal VC setup,
DAC: 4V, No-load
3.79 4.00 4.21 V
CH6 Constant Current Driver
Output ON Resistance
RON
Iout=+-200mA,
Sum of on-resistance
- 1.25 1.8
DAC=0.31V
Output Limit Voltage 1
VOL1 (exterior VC setup),
RNF=1 , RM=5
0.30 0.31 0.32 V
Output Limit Voltage 2
VOL2
VC=internal VC setup,
RNF=1 , RM=5
0.30 0.31 0.32 V
Serial Control
SCLK frequency
fsclk
- 4.0 5.0 MHz
SLD setup time
Tsets
200 -
- nS
SLD hold time
Tholds
100 -
- nS
SLD negate time
Tnegs
200 -
- nS
SDAT setup time
Tsetd
60 -
- nS
PI Driver
On Current 1
IPION1
It is referred as PI terminal
voltage=2.2V after 200Ω setup
3.7 5.0 6.3 mA
On Current 2
IPION2
It is referred as PI terminal
voltage=2.2V after 150Ω setup
5.8 7.5 9.2 mA
On Current 3
IPION3
It is referred as PI terminal
voltage=2.2V after 100Ω setup
7.4 10.0 12.6 mA
On Voltage 4
VPION4
It is referred as Iout=20mA after
20Ω setup
- 0.4 0.5 V
It is leak current when
OFF
Ioff VCC PIOUT
-2.0 0 2.0 µA
TSD
Thermal Shut Down
Temperature
TTSD
Tip temperature in case H-bridge
output turns OFF
- 150 -
˚C
Note: Temperature Hysteresis 30˚C
7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/15/2006 REV:1.0
Email: [email protected]
5
5 Page 
Serial Control Map
AT5557
Preliminary Product Information
Serial Input 6CH Motor Driver for DSC
7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
2/15/2006 REV:1.0
Email: [email protected]
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AT5557.PDF ] | |
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