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11-MD142
Version Issue Date File Name Total Page : A.003 : 2005/11/7 : SP-MD142-A.003.doc : 11
Multi-Channels Motor Driver For DSC
9 7 1 SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Rd I, Science-Based Industrial Park Hsinchu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
SILICON TOUCH TECHNOLOGY INC.
11-MD142
11-MD142
Motor Driver For DSC
General Specifications
The 11-MD142 is a 4-channels motor driver for Digital Still Camera. It contains constant current control for M-shutter and saturation voltage control channels for AF stepping motor and Iris. It is optimal for DSC Lens module in M-shutter, Iris and Auto Focus motor.
Features and Benefits
Low voltage operation Low saturation voltage Low input current Easy constant current control Ultra low standby current Reference Voltage inside (Vref=1.23V) Thermal shutdown protection Thin, highly reliable package :QFN-32(4.75mm X 4.75mm) and TSSOP-20
Pin Assignment
Pin Assignment of QFN-32
OUT1 GND VDD NC NC NC NC IM
Pin Assignment of TSSOP-20
32
31
30
29
28
27
26
25 24
VDD
OUT1 GND IM OUT2 OUT3 OUT4 OUT5 OUT6 GND VREF
PIM EN1 EN2 IAD IN1 IN2 IN3 IN4
1
NC
PIM
2
23
GND
EN1
3
22
OUT2
EN2
4
21
OUT3 OUT4 OUT5 OUT6 NC
IAD IN1 IN2 IN3 IN4 VB
5
20
6
19
7
18
8 9 10 11 12 13 14 15 16
17
VREF
GND
NC
NC
NC
NC
SP-MD142-A.003
NC
VB
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Pin Descriptions of QFN-32
Pin NO. Pin Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIM EN1 EN2 IAD IN1 IN2 IN3 IN4 NC NC NC VB VREF GND NC NC Power supply pin for motor driver Reference voltage output pin Motor driver ground Description Current sense resistor Mode Selected Input pin Mode Selected Input pin AMP positive input pin Motor control input pin Motor control input pin Motor control input pin Motor control input pin Pin NO. Pin Name 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 OUT1 NC NC NC VDD Power supply pin for controller. Motor output pin NC OUT6 OUT5 OUT4 OUT3 OUT2 GND NC IM GND Current sense resistor Controller and driver ground Motor output pin Motor output pin Motor output pin Motor output pin Motor output pin Controller and driver ground Description
Pin Descriptions of TSSOP-20
Pin NO. Pin Name 1 2 3 4 5 6 7 8 9 10 VDD PIM EN1 EN2 IAD IN1 IN2 IN3 IN4 VB Description Power supply pin for controller. Current sense resistor Mode selected Input pin Mode selected Input pin AMP positive input pin Motor control input pin Motor control input pin Motor control input pin Motor control input pin Power supply pin for motor driver Pin NO. Pin Name 11 12 13 14 15 16 17 18 19 20 VREF GND OUT6 OUT5 OUT4 OUT3 OUT2 IM GND OUT1 Description Reference voltage output pin Motor driver ground Motor output pin Motor output pin Motor output pin Motor output pin Motor output pin Current sense resistor Controller and driver ground Motor output pin
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Absolute Maximum Ratings ( Unless otherwise noted, TA= 25 )
Characteristic Supply Voltage Input Voltage IO Peak Current IODC Current Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VDD VB VIN IOPeak IODC PD TOPR TSTG Rating 5.5 5.5 VDD+0.4 1.5 550 800 -40 ~ 125 -65 ~ 150 Unit V V V A mA mW C C
Electrical Characteristic
(Unless otherwise noted, TA= 25 , Ra + Rb = 10 k & VDD = VB = 3V )
Characteristic Sym. VDD VB ISTB Supply Current ( IDD ) IDD1 IDD2 IDD3 Reference Voltage Circuit Reference Voltage Vref VDD = 3V ; Iref = -1mA 1.19 1.23 1.27 V VEN1~ EN2 =L; VIN1~ IN4 =L VEN1~ EN2 = LH VEN1~ EN2 = HL VEN1~ EN2 = HH Condition Min. Supply Voltage 2.2 Limit Typ. 3 3 0.1 0.8 0.6 0.6 Max. 5.5 5.5 1 1.5 1.0 1.0 V V A mA mA mA Unit
EN1~2 / IN1~4 Input Terminal ( TJ = 25) Input Voltage "H" Input Voltage "L" Input Current "H" Input Current "L" VIH VIL IIH IIL VIN = VDD VIN = 0 V 0.8*VDD -0.4 VDD+0.4 0.2*VDD 5 5 V V A A
AF Output Terminal (OUT2-3OUT5-6) Saturation Voltage (upper + lower) VSAT1 IOUT = 200 mA 0.25 0.4 V
AE Output Terminal (OUT4-5) Saturation Voltage (upper + lower) VSAT2 IOUT = 200 mA 0.25 0.4 V
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
SH Output Terminal (OUT1-2) Output Current1 IO1 O2-> O1, RIM = 1 VIAD=0.3V O1-> O2, RPIM = 0.9 VIAD=0.3V IOUT = 200 mA 0.25 0.4 V 220 248 275 mA 255 270 285 mA
Output Current1 Saturation Voltage (upper + lower)
IO2
VSAT3
Thermal Protection Circuit Protection Temperature TTSD VEN1 or VEN2=H 160
Truth Table
EN1 L EN2 L INPUT IN1 IN2 IN3 IN4 -------- L L L H H L H H L L L H H L H H L L L H H L H H L L L H H L H H L L L H H L H H L L L H H L H H O1 -- -- L H -- O2 -- -- H L -- OUPUT O3 O4 -- -- -- -- -- -- -- -- -- L -- H -- -- -- L H -- -- L H -- -- -- -- H -- L -- -- -- -- -- -- O5 -- O6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- MODE STB
L
H
SH
-- H L --
H
L
H
H
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- -- -- --
-- H L --
AE (VCM)
-- L H --
-- L H --
-- H L --
AF (STM)
Note: "*": Don't care;
"--": High Impedance
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Application Circuit
AF: Saturation drive for 2 phase, 1-2 phase stepping motor M-shutter: Constant current drive for shutter voice coil motor Aperture: Saturation drive for aperture voice coil motor
VDD
11-MD142
10 VDD RPIM VB 10 EN1 EN1 IM PIM GND RIM Cc OUT1
M-shutter
EN2
EN2
OUT2 Cn Cn
IAD
OUT3
AF
Cn
IN1
IN1
OUT4
Aperture
IN2
IN2
OUT5
IN3
IN3
OUT6
IN4
IN4
GND
VB 10
VREF
Ra
Rb
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Function Block (TSSOP-20 Pin Assignment)
CPU
GND 19
VDD
EN1 3
VDD
EN2 4
VDD
IN1 6
VDD
IN2 7
VDD
IN3 8
VDD
IN4 9
1 10uF
VDD
BIAS
VREF 11 Ra 5 Rb IAD
Logic
THD
VB 10 10uF RPIM 2 PIM
IM 18 RIM
OUT1 20 12
OUT2 17
OUT3 16
OUT4 15
OUT5 14
OUT6 13
Shutter
Constant Current Drive
Aperture
AF
Saturation Voltage Drive
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Application Notes
The 11-MD142 integrates saturation voltage and constant current of motor driver. The range of supply voltage of 11-MD142, VDD and VB, is from 2.2V to 5.5V. The 11-MD142 input range is defined that logic "H" is from 0.8*VDD to VDD+0.4V and logic "L" is from -0.4V to 0.2*VDD. EN1 and EN2 are mode selection pins; IN1, IN2, IN3 and IN4 are motor rotation selection pins. Normally VB should provide enough current for output loading, thus large value of C is suggested for the terminal VB. Besides, 0.01uF~0.1uF of capacitors, Cn, are also suggested between each output channel and output channel to ground. Constant current operation of 11-MD142 provides the current, which can be evaluated by the following formula (See the depiction of application circuit 1.):
I PIM =
VIAD ( RPIM + 0.3)
(unit : A)
I IM =
V IAD ( R IM + 0.11)
(unit : A)
Before switching the mode of actuator, make sure to pull low the motor rotation selection pins (IN1~IN4). Then, switch to next mode to drive the motor. Considering of stability of function of constant current, compensation capacitor of Cc (0.1~1uF) is suggested to connect between pin OUT1 and IM.
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Package Specifications (QFN-32)
TOP VIEW BOTTON VIEW
32
D
25
25
D2
32 1
1
24
24 e
MD142 DDDDDDDD
E
E2
8
17 L 9 16
17
8
16 e b
9
A3
A1
A
Note: "DDDDDDDD" are the date code or lot number and may be changed.
Dimensions in Millimeter SYMBOL A A1 A3 b D D2 E E2 L e 2.60 0.30 2.60 MIN 0.70 0 0.18 NOM 0.75 0.02 0.20 REF 0.25 5.00 5.00 BSC 2.80 2.80 0. 50 BSC 2.70 2.70 0.40 0.50 BSC MAX 0.80 0.05 0.30
SP-MD142-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
Package Specifications(TSSOP-20)
MD142 DDDDDDDD
Note: "DDDDDDDD" are the date code or lot number and may be changed.
e
b
12(4X)
Dimensions in Millimeter SYMBOL A A1 A2 b C D E E1 e L y MIN 0.05 0.80 0.19 0.09 6.40 6.20 4.30 0.45 0 NOM 1 6.50 6.40 4.40 0.65 0.60 MAX 1.20 0.15 1.05 0.30 0.20 6.60 6.40 4.50 0.75 0.10 8
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VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
11-MD142
The products listed herein are designed for ordinary electronic applications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation.
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VersionA.003
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