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DM412
Version : Issue Date : File Name : Total Pages :
A.003 2007/08/27 SP-DM412-A.003.doc 35
3-CHANNEL CONSTANT CURRENT LED DRIVERS WITH LED OPEN DETECTION
9 7 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel886-3-5645656 Fax886-3-5645626

SILICON TOUCH TECHNOLOGY INC.
DM412
DM412
3-CHANNEL CONSTANT CURRENT LED DRIVERS WITH LED OPEN DETECTION
General Description DM412 is a PWM enabled LED driver specifically designed for LED video display or lighting applications. Each channel has linear adjustable 16-bits (65536 steps) grayscale PWM control current outputs. It incorporates shift registers, data latches, 3-channel constant current circuitry with current value set by 3 external resistors, and built-in oscillator for PWM functioning. Data, clock, and latch buffer outputs are designed for cascading another chip. Its built-in open detection function help users locate LED failures without additional circuits. The output polarity reverse function is designed for more high power LED applications.
Features Maximum constant current outputs: 200mA determined by three external resistors Maximum sinking output voltage: 17V Maximum serial-in clock frequency: 20 MHz 16-bit linear PWM control current outputs Built-in buffers for cascading clock, data, and strobe to next driver PWM free-running capability (refresh rate (~ 267 Hz) with internal oscillator (~ 17.5 MHz)) Selectable auto/manual strobe (Patent pending) LED open detection Output polarity reverse function Power supply voltage: 4V ~ 5.5V
Applications LED Decorative Lighting Indoor/Outdoor LED Video or Message Display PWM Signal Generator
Package SSOP16, SOP16 (with exposed pad), TSSOP16 (with exposed pad), QFN16 (with exposed pad)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
Page 1
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SILICON TOUCH TECHNOLOGY INC.
DM412
Block Diagram
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
Page 2
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SILICON TOUCH TECHNOLOGY INC.
DM412
Pin Connection
GND
9
SDO
10
CKI
12 13 14
STI
11
RREXT GREXT BREXT BOUT
8 7
DAI VCC DAO CKO
QFN16
6 (bottom view) 5 4 3 2 1 16 15
GOUT
ROUT
POL
STO
Pin Description
PIN No.
SOP16/SSOP16/TSSOP16: 1 QFN16: 15 SOP16/SSOP16/TSSOP16: 2 QFN16: 16 SOP16/SSOP16/TSSOP16: 3 QFN16: 1 SOP16/SSOP16/TSSOP16: 4 QFN16: 2 SOP16/SSOP16/TSSOP16: 5~7 QFN16: 3~5 SOP16/SSOP16/TSSOP16: 8 QFN16: 9 SOP16/SSOP16/TSSOP16: 9~11 QFN16: 6~8 SOP16/SSOP16/TSSOP16: 12 QFN16: 10
PIN NAME
DAO Serial data output terminal.
FUNCTION
CKO
Clock output terminal.
STO
Strobe output terminal. PWM current output polarity selection:
POL
`H' means DM412 is to be LED driver, `L' means DM412 is to be PWM generator.
R(GB)OUT
Sink constant current outputs (open-drain).
GND
Ground terminal. External resistors connected between R(GB)REXT and GND for driver current value setting. Serial data output trigger mode selection:
R(GB)REXT
SDO
*1
`H' means data is shifted out on synchronization to falling edge of CKO, `L' means data is shifted out on synchronization to rising edge of CKO. Input terminal of data strobe:
SOP16/SSOP16/TSSOP16: 13 QFN16: 11 SOP16/SSOP16/TSSOP16: 14 QFN16: 12 SOP16/SSOP16/TSSOP16: 15 QFN16: 13 SOP16/SSOP16/TSSOP16: 16 QFN16: 14
STI
`H' means data is latched, `L' means data on shift register goes through latch (level latch).
CKI
Synchronous clock input terminal for serial data transfer. Data is sampled at the rising edge of CKI.
DAI
Serial data input terminal.
VCC
Power supply terminal.
*1
It is recommended that SDO should be set to high level in cascading system applications. Version:A.003 Page 3
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Equivalent Circuit of Inputs and Outputs
1. CKI, DAI, STI, SDO terminals
2. POL terminals
3. CKO, DAO, STO terminal
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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SILICON TOUCH TECHNOLOGY INC.
DM412
Maximum Ratings (Ta=25C, Tj(max) = 140C)
CHARACTERISTIC Supply Voltage Input Voltage Output Current Output Voltage Input Clock Frequency GND Terminal Current SYMBOL VCC VIN IOUT VOUT FCKI IGND RATING -0.3 ~ 7.0 -0.3 ~ VCC+0.3 200 -0.3 ~ 17 20 610 0.77 (QFN16 exposed pad: Ta=25C) 0.82 ( SSOP16 : Ta=25C) 1.4 ( SOP16 exposed pad: Ta=25C) 2.1 ( TSSOP16 exposed pad: Ta=25C) 150 (QFN16) 140.2 ( SSOP16 ) 81.2 ( SOP16 exposed pad) 55 ( TSSOP16 exposed pad) -40 ~ 85 -55 ~ 150 UNIT V V mA V MHz mA
Power Dissipation
PD
W
Thermal Resistance
Rth(j-a)
C/W
Operating Temperature Storage Temperature
Top Tstg
C C
Recommended Operating Condition
CHARACTERISTIC Supply Voltage Output Voltage Output Voltage Output Current SYMBOL VCC VOUT VOUT IO IOH IOL Input Voltage VIH VIL CONDITION Driver Off Driver On
*1
MIN. 4 1.0 5 0.8VCC 0.0
TYP. 5.0
MAX. 5.5 10 17 200
*3
UNIT V V
*2
OUT (R, G , B) SERIAL-OUT VCC = 4 V ~ 5.5V Single Chip Operation
1.2 1.5 VCC 0.2VCC 20M
mA
V
Input Clock Frequency
FCKI
Cascade Operation (SDO=`H', CL=13pF) Cascade Operation (SDO=`L', CL=13pF)
DC
20M 10M
Hz
STI Pulse Width CKI Pulse Width Set-up Time for DAI Hold Time for DAI Set-up Time for STI Set-up Time for Internal Strobe Internal Oscillator Frequency
tw STI tw CLK tsetup(D) thold(D) tsetup(L) tsetup(istb) FOSC VCC = 4 V ~ 5.5V
20 20 15 15 15 1 14
17.5
21 us MHz ns
*1 *2
Notice that the power dissipation is limited to its package and ambient temperature. The driver output voltage including any overshoot stress has to be compliant with the maximum voltage (17V). *3 It is recommended to choose good thermal dissipation package such as TSSOP16 (Iout = 100mA ~ 200mA). 3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.003 Page 5
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SILICON TOUCH TECHNOLOGY INC.
DM412
Electrical Characteristics (VCC = 5.0 V, Ta = 25C unless otherwise noted)
CHARACTERISTIC Input Voltage "H" Level Input Voltage "L" Level Input Leakage Current Output Leakage Current Output Voltage (S-OUT) VOH Output Current Skew (Channel-to-Channel) Output Current Skew (Chip-to-Chip)
*2 *1
SYMBOL VIH VIL IIH IIL IOL VOL
CONDITION CMOS logic level CMOS logic level VIH = VCC VIL = GND VOH = 17 V IOL = 1.5 mA IOH = 1.2 mA
MIN. 0.8VCC GND VCC-0.2
TYP.
MAX. VCC 0.2VCC 1.0 1.0 1.0 0.2 3
UNIT V
uA uA V
IOL1 VOUT = 1.0 V REXT = 120 IOL2 REXT = 120 VOUT = 1 V ~ 3 V REXT = 120 all pins are open unless VCC and GND Vout = 1.0V Rext = 120 all outputs turn off CKI = 20MHz Vout = 1.0V Rext = 120 all outputs turn on Vout = 1.0V Rext = 2.9 all outputs turn off CKI = 20MHz Vout = 1.0V Rext = 2.9 all outputs turn on
%
4.62
4.92
5.22
mA
Output Voltage Regulation Supply Voltage Regulation
% / VOUT % / VCC IDD(off) IDD(off)

0.1 1.4 1.3
0.5 %/V 2
Supply Current
*3
IDD(on)
1.8
mA
IDD(off)
1.3
IDD(on)
1.8
*1
Channel-to-channel skew is defined as the ratio between (any Iout - average Iout) and average Iout, where average Iout = (Imax + Imin) / 2. *2 Chip-to-Chip skew is defined as the range into which any output current of any IC falls. *3 IO excluded. 3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.003 Page 6
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SILICON TOUCH TECHNOLOGY INC.
DM412
Switching Characteristics (VCC = 5.0V, Ta = 25C unless otherwise noted)
CHARACTERISTIC Propagation Delay (`L' to `H') Propagation Delay (`H' to `L') CKI-to-CKO CKO-to-DAO (SDO = `L') CKI-to-CKO CKO-to-DAO (SDO = `H') tpHL tpLH VIH = VCC VIL = GND REXTs = 33 VL = 5.0 V tor tof top
*1
SYMBOL
CONDITION
MIN.
TYP. 11.5 8.4 7.2 4.0 18 12.5
MAX. 4.7
UNIT
ns
Output Current Rise Time Output Current Fall Time Output Current (Propagation Delay after STI low)
RL = 180 CL = 13 pF
ms
*1
Reload the new PWM data at the end of the last PWM frame. Version:A.003 Page 7
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Constant-Current Output
Constant-current value of each output channel is set by an external resistor connected between the R(GB)REXT pin and GND individually. The current scale ranging can be adjusted from 5mA to 200mA by varying the resistor value. The output current value is calculated by the following equation:
Output Current as a Function of REXT value
200 180 160 140
Iout (mA)
120 100 80 60 40 20 0 0 10 20 30 40 50 60 70 80 90 100 110 120
REXT (ohm)
Output Current as a Function of Output Voltage
220 200 180 160
Iout (mA)
140 120 100 80 60 40 20 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
Vout (volt)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Input Data Format
LED Open Detection
DM412 provides a real time monitor of LED open detection function without extra components or circuit design. It will be identified as a LED open failure when the output is turned on but the output voltage is below 0.3V. The test result of each channel will write to its correspondent shift register which is in LSB position (R[0], G[0], B[0]) while strobe signal is active. User can refer to timing diagram on page12. Detecting report could be retrieved from serial-out (DAO) data. If the system reads `1' back, that indicates LED is in normal status. But if `0' was retrieved then LED open failure has occurred. In order to make sure LED open detection function is in well operating condition, it is recommended that all the luminance data are wrote to `1' then almost turning on the outputs during detection process.
Serial-out Data Format
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Output Modulation Technique
In order to minimize the harmonic noise and increasing current accuracy, DM412 provides a new LED drive technique of output modulation. It mixes traditional Pulse Width Modulation (PWM) represented by MSB 8 bit (Bit[15:8]) with Bit Angle Modulation (BAM) represented by LSB 8 bit (Bit[7:0]). The main benefit of BAM is to drive LED with an equivalent multiple frequencies in the lower intensity of LED light output. Each bit of BAM binary code is effectively allocated a fixed width of phase angles within a modulation cycle. The reference table shows the ratio defined by the binary significance of each bit:
bit
7 6 5 4 3 2 1 0
weighted width
256 128 64 32 16 8 4 1
The relationships between BAM and PWM in the time domain can be refer to the diagram (not to scale) below:
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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SILICON TOUCH TECHNOLOGY INC.
DM412
Timing Diagram
1. CKI-DAI, CKO, DAO
2. CKI-STI
3. STI-OUTn
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Timing Diagram
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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SILICON TOUCH TECHNOLOGY INC.
DM412
Power Dissipation
The power dissipation of a semiconductor chip is limited to its package and ambient temperature, in which the device requires the maximum output current calculated for given operating conditions. The maximum allowable power consumption can be calculated by the following equation:
Pd(max)(Watt) =
Tj(junction temperature)(max)(C)- Ta(ambient temperature)(C) Rth(junction-to-air thermal resistance)(C/Watt)
The relationship between power dissipation and operating temperature can be refer to the figure below:
3.0
Power Dissipation Pd(W)
2.5
TSSOP16
Tj(max)=140 C Rth(TSSOP16)=55 C/Watt Rth(SOP16)=81.2 C/Watt
SOP16
2.0 1.5 1.0 0.5 0.0 0 20 40 60 80
Rth(SSOP16)=140.2 C/Watt Rth(QFN16)=150 C/Watt
SSOP16
QFN16
100
120
140
160
Ambient Temperature Ta(C)
Based on the Pd(max), the maximum allowable voltage of output terminal can be determined by the following equation:
VoutR x IoutR x DutyR + VoutG x IoutG x DutyG + VoutB x IoutB x DutyB < Pd(max)(W)- VCC(V) x IDD(A)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Typical Application
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Typical Application
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Typical Application
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Typical Application
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Typical Application
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Package Outline Dimension
DM412-SSOP
16 9
E1
E
GAUGE PLANE SEATING PLANE L
DETAIL A
1 e 8 b B
D
b WITH PLATING
A2 A
b1 c1 c
BASE METAL
A1
0.004MAX.
DETAIL B
DIMENSIONS IN INCH SYMBOLS A A1 A2 b b1 c c1 D E E1 e L MIN. 0.053 0.004 0.008 0.008 0.007 0.007 0.189 0.228 0.150 0.016 0 MAX. 0.069 0.010 0.059 0.012 0.011 0.010 0.009 0.197 0.244 0.157 0.050 8
DIMENSIONS IN MM MIN. 1.346 0.102 0.203 0.203 0.178 0.178 4.801 5.791 3.810 0.406 0 MAX. 1.753 0.254 1.499 0.305 0.279 0.254 0.229 5.004 6.198 3.988 1.270 8
0.025TYP.
0.635TYP.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Package Outline Dimension
DM412-SOPEX
D1
16 9
1
8
1
b
8
e
16
9
D
A2
A
SEATING PLANE
A1
0.004MAX.
L
DIMENSIONS IN INCH SYMBOLS A A1 b D D1 E E1 e H L MIN. 0.053 0.004 MAX. 0.069 0.010
DIMENSIONS IN MM MIN. 1.346 0.102 9.804 3.810 MAX. 1.753 0.254 10.008 3.988
0.016TYP. 0.386 0.394 0.162TYP. 0.150 0.157 0.086TYP. 0.050TYP. 0.228 0.016 0 0.244 0.050 8
0.406TYP. 4.115TYP. 2.184TYP. 1.270TYP. 5.791 0.406 0 6.198 1.270 8
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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E1
H
E
Page 20

SILICON TOUCH TECHNOLOGY INC.
DM412
Package Outline Dimension
DM412-TSSOPEX
D1
16
9
E1
1 e b
8
A2
A
0.25mm
D
S
GAUGE PLANE SEATING PLANE
A1
L L1
0.05
DIMENSIONS IN INCH SYMBOLS A A1 A2 b D D1 E E1 E2 e L L1 S MIN. 0.000 0.031 0.007 0.193 0.106 0.252TYP. 0.169 0.106 0.026TYP. 0.018 0.008 0 0.030 8 0.039TYP. 0.177 MAX. 0.047 0.006 0.041 0.012 0.201 -
DIMENSIONS IN MM MIN. 0.00 0.80 0.19 4.90 2.70 6.40TYP. 4.30 2.70 0.65TYP. 0.45 0.20 0 0.75 8 1.00TYP. 4.50 MAX. 1.20 0.15 1.05 0.30 5.10 -
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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E2
E
Page 21
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SILICON TOUCH TECHNOLOGY INC.
DM412
Package Outline Dimension
DM412-QFN
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SSOP Package and Weight4 Boxes Set
SSOP16 - 150 - 0.635
IC
SSOP
100 pcs ICs per Tube
Tube
53cm
Box
11cm 10cm
100 Tubes per Box
61cm
4 Boxes per Carton
Carton
24cm 24cm
64cm
Weight
Item 1 2 3 4 Description 100 pcs DM412-SSOP per Tube Net Weight of one Box Net Weight of one Carton Per Carton Set ( 4 Boxes, 40,000 pcs ) Weight ( Kg ) 0.025% 0.405% 1.245% 10.845%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SSOP Package and Weight6 Boxes Set
SSOP16 - 150 - 0.635
IC
SSOP
100 pcs ICs per Tube
Tube
53cm
Box
11cm 10cm
100 Tubes per Box
61cm
Carton
24cm 34cm
6 Boxes per Carton
64cm
Weight
Item 1 2 3 4 Description 100 pcs DM412-SSOP per Tube Net Weight of one Box Net Weight of one Carton ( for 6 Boxes ) Per Carton Set (6 Boxes, 60,000 pcs ) Weight ( Kg ) 0.025% 0.405% 1.445% 15.845%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SSOP Package and Weight
SSOP16 - 150 - 0.635
IC
SSOP
Reel
2,500 pcs ICs per Reel
1 Reel per Box
35cm
Box
35cm 5cm
36cm
5 Boxes per Carton
Carton
29cm 37cm
38cm
Weight
Item 1 2 3 4 Description 2,500 pcs DM412-SSOP per Reel Net Weight of one Box Net Weight of one Carton Per Carton Set ( 5 Boxes, 12,500 pcs ) Weight ( Kg ) 0.715% 0.245% 0.905% 5.655%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SOPEX Package and Weight4 Boxes Set
SOP16 - 150 - 1.27 ( Exposed Pad )
IC
SOP 50 pcs ICs per Tube
Tube
53cm
Box
11cm 10cm
100 Tubes per Box
61cm
4 Boxes per Carton
Carton
24cm 24cm
64cm
Weight
Item 1 2 3 4 Description 50 pcs DM412-SOPEX per Tube Net Weight of one Box Net Weight of one Carton Per Carton Set ( 4 Boxes, 20,000 pcs ) Weight ( Kg ) 0.0165% 0.405% 1.245% 9.245%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SOPEX Package and Weight6 Boxes Set
SOP16 - 150 - 1.27 ( Exposed Pad )
IC
SOP 50 pcs ICs per Tube
Tube
53cm
Box
11cm 10cm
100 Tubes per Box
61cm
Carton
24cm 34cm
6 Boxes per Carton
64cm
Weight
Item 1 2 3 4 Description 50 pcs DM412-SOPEX per Tube Net Weight of one Box Net Weight of one Carton ( for 6 Boxes ) Per Carton Set (6 Boxes, 30,000 pcs ) Weight ( Kg ) 0.0165% 0.405% 1.445% 13.445%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-SOPEX Package and Weight
SOP16 - 150 - 1.27 ( Exposed Pad )
IC
SOP
Reel
2,500 pcs ICs per Reel
1 Reel per Box
35cm
Box
35cm 5cm
36cm
5 Boxes per Carton
Carton
29cm 37cm
38cm
Weight
Item 1 2 3 4 Description 2,500 pcs DM412-SOPEX per Reel Net Weight of one Box Net Weight of one Carton Per Carton Set ( 5 Boxes, 12,500 pcs ) Weight ( Kg ) 0.975% 0.245% 0.905% 6.955%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-TSSOPEX Package and Weight4 Boxes Set
TSSOP16 - 173 - 0.65 ( Exposed Pad )
IC
TSSOP 75 pcs ICs per Tube
Tube
53cm
Box
11cm 10cm
100 Tubes per Box
61cm
4 Boxes per Carton
Carton
24cm 24cm
64cm
Weight
Item 1 2 3 4 Description 75 pcs DM412-TSSOPEX per Tube Net Weight of one Box Net Weight of one Carton ( for 4 Boxes ) Per Carton Set ( 4 Boxes, 30,000 pcs ) Weight ( Kg ) 0.0115% 0.405% 1.245% 7.245%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-TSSOPEX Package and Weight6 Boxes Set
TSSOP16 - 173 - 0.65 ( Exposed Pad )
IC
TSSOP 75 pcs ICs per Tube
Tube
53cm
Box
11cm
100 Tubes per Box
10cm
61cm
Carton
24cm 34cm
6 Boxes per Carton
64cm
Weight
Item 1 2 3 4 Description 75 pcs DM412-TSSOPEX per Tube Net Weight of one Box Net Weight of one Carton Per Carton Set ( 6 Boxes, 45,000 pcs ) Weight ( Kg ) 0.0115% 0.405% 1.445% 10.445%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-TSSOPEX Package and Weight
TSSOP16 - 173 - 0.65 ( Exposed Pad )
IC
TSSOP
Reel
2,500 pcs ICs per Reel
35cm
1 Reel per Box
Box
35cm 5cm
36cm
37cm
Carton
29cm 37cm
38cm
Weight
Item 1 2 3 4 Description 2,500 pcs DM412-TSSOPEX per Reel Net Weight of one Box Net Weight of one Carton Per Carton Set ( 5 Boxes, 12,500 pcs ) Weight ( Kg ) 0.735% 0.245% 0.905% 5.755%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
DM412-QFN Package and Weight
SOP16 - 150 - 1.27 ( Exposed Pad )
IC
QFN
Reel
2,500 pcs ICs per Reel
1 Reel per Box
35cm
Box
35cm 5cm
36cm
5 Boxes per Carton
Carton
29cm 37cm
38cm
Weight
Item 1 2 3 4 Description 2,500 pcs DM412-QFN per Reel Net Weight of one Box Net Weight of one Carton Per Carton Set ( 5 Boxes, 12,500 pcs ) Weight ( Kg ) 0.585% 0.245% 0.905% 55%
3-CHANNEL CONSTANT CURRENT LED DRIVERS
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SILICON TOUCH TECHNOLOGY INC.
DM412
Product Ordering Information
Number / Weight (typ.) Part Number Package Type Tube / Tray DM412-SOPEX SOP16-150-1.27 (Exposed Pad) SSOP16-150-0.635 TSSOP16-173-0.65 (Exposed Pad) QFN16-3x 3 50 pcs / Tube 0.016kg 5% 100pcs / Tube 0.02kg 5% 75pcs / Tube 0.011kg 5% Reel (Box included) 2,500pcs / Reel 0.97kg 5% 2,500pcs / Reel 0.71kg 5% 2,500pcs / Reel 0.73kg 5% 2,500pcs / Reel 0.58kg 5%
DM412-SSOP
DM412-TSSOPEX
DM412-QFN
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
Page 33
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.

SILICON TOUCH TECHNOLOGY INC.
DM412
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.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
Page 34
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.

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