DM134B、DM135B - Silicon Touch

DM134B、DM135B
Version
: A.005
Issue Date : 2007/02/09
File Name : SP-DM134B,135B-A.005.doc
Total Pages: 19
16-Bit Constant Current LED Drivers with
3.3v ~ 5v Supply Voltage
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel：886-3-5645656
Fax：886-3-5645626
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
DM134B、DM135B
16-Bit Constant Current LED Drivers with
3.3v ~ 5v Supply Voltage
General Description
The DM134B、DM135B are constant current drivers specifically designed for LED display
applications. The value of constant current can be varied using an external resistor. The devices
include a 16-bit shift register, latches, and constant current drivers on a single Silicon CMOS
chip.
Features
z
z
z
z
z
z
3.3V~5V CMOS Compatible Input
Maximum Clock Frequency: 25MHz (Cascade Operation)
Maximum Output Voltage: 17V
Package:
DIP24, SOP24, SSOP24, QFN32
Package and Pin Layout:
Pin layout and functionality are similar to those of the ST2221C.
(Each characteristic value is different.)
Constant Current Matching: (Ta = 25°C、VDD = 5.0V)
Chip-to-Chip: ± 10.0%
Bit-to-Bit:
DM134B:± 4.0% @ IOUT = 30 ~ 90mA
± 6.0% @ IOUT = 20 ~ 30mA
DM135B:± 4.0% @ IOUT = 20 ~ 60mA
± 6.0% @ IOUT = 5 ~ 20mA
16-Bit Constant Current LED Drivers
-1-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Pin Connection (Top view)
DIP24、SOP24、SSOP24
GND
SERIAL-IN
1
2
24
VDD
23
R-EXT
CLOCK
LATCH
OUT0
3
4
22
21
SERIAL-OUT
5
OUT1
6
OUT2
OUT3
7
8
20
19
18
OUT4
9
OUT5
OUT6
10
11
12
OUT7
ENABLE
OUT15
OUT14
OUT13
17
16
OUT12
OUT11
15
14
OUT10
13
OUT8
OUT9
Pin Connection (Bottom view)
OUT15
GND
ENABLE
SERIAL_OUT
REXT
25
26
27
28
29
30
31
32
1
GND
23
2
GND
OUT9
22
3
VDD
OUT8
21
4
VDD
OUT7
20
5
GND
OUT6
19
6
GND
OUT5
18
7
GND
OUT4
17
8
GND
Thermal PAD
OUT10
OUT14
24
OUT13
OUT11
OUT12
QFN32
16
15
14
13
12
11
10
9
OUT3
OUT2
OUT1
OUT0
GND
LATCH
CLOCK
SERIAL_IN
16-Bit Constant Current LED Drivers
-2-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Block Diagram
R-EXT
OUT15
OUT1
OUT0
I-REG.
ENABLE
Q
Q
ST D
ST D
Q
ST D
LATCH
SERIAL-IN
D
CK
Q
D
D
Q
CK
Q
SERIAL-OUT
CK
CLOCK
Timing Diagram
16 Clocks
CLOCK
5V
0V
SERIAL_IN
5V
0V
LATCH
5V
0V
ENABLE
5V
0V
SERIAL_OUT
5V
0V
Previous Data
OUT0
ON
OFF
OUT1
ON
OFF
OUT2
ON
OFF
OUT3
ON
OFF
OUT13
ON
OFF
OUT14
ON
OFF
OUT15
ON
OFF
(Note) Latches are level sensitive (not edge triggered).
LATCH-terminal = H level, latches become transparent; LATCH-terminal = L level, latches hold data.
ENABLE-terminal = H level, all outputs (OUT0~15) are off.
An external resistor is connected between R-EXT and GND for setting up the value of constant current.
SERIAL-OUT changes state on the rising edges of clock.
16-Bit Constant Current LED Drivers
-3-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Pin Description
PIN No.
1
2
3
4
5~20
21
22
23
24
PIN NAME
GND
SERIAL-IN
CLOCK
LATCH
OUT0~15
ENABLE
SERIAL-OUT
R-EXT
VDD
FUNCTION
Ground terminal
Input terminal of a data shift register
Input terminal of a clock for shift register
Input terminal of data strobe
Output terminals
Input terminal of output enable (active low)
Output terminal of a data shift register
Input terminal of an external resistor
5V Supply voltage terminal
Equivalent Circuit of Inputs and Outputs
1. ENABLE terminal
VDD
2. LATCH terminal
VDD
RIN (up)
ENABLE
LATCH
RIN
GND
3. CLOCK, SERIAL-IN terminal
VDD
GND
4. SERIAL-OUT terminal
VDD
CLOCK,
SERIAL-OUT
SERIAL-IN
GND
16-Bit Constant Current LED Drivers
GND
-4-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Maximum Ratings (Ta = 25°C, Tj(max) = 150°C)
CHARACTERISTIC
SYMBOL
RATING
UNIT
Supply Voltage
Input Voltage
VDD
VIN
V
V
Output Current
IOUT
Output Voltage
Clock Frequency
VOUT
fCLK
GND Terminal Current
IGND
0 ~ 7.0
-0.4 ~ VDD+0.4
90 ( DM134B )
60 ( DM135B )
-0.3 ~ 17
25
1440 ( DM134B )
960 ( DM135B )
2.5 (DIP-24 : Ta=25°C)
1.58 (SOP-24 : Ta=25°C)
1.39 (SSOP-24 : Ta=25°C)
3.08 (QFN-32 : Ta=25°C)
50.0 (DIP-24)
79.2 (SOP-24)
Power Dissipation
(On 4-layer PCB)
PD
Thermal Resistance
(On 4-layer PCB)
Rth(j-a)
90.2 (SSOP-24)
mA
V
MHz
mA
W
°C/W
40.6 (QFN-32)
Operating Temperature
Storage Temperature
Topr
Tstg
°C
°C
-40 ~ 85
-55 ~ 150
Recommended Operating Condition
CHARACTERISTIC
Supply Voltage
Output Voltage
Operating temperature
Output Current
Input Voltage
LATCH Pulse Width
CLOCK Pulse Width
Set-up Time for DATA
Hold Time for DATA
Set-up Time for LATCH
Clock Frequency
SYMBOL
VDD
VOUT
TOPR
IOH
IOL
VIH
VIL
tw LAT
tw CLK
tsetup(D)
thold(D)
tsetup(L)
fCLK
CONDITION
⎯
⎯
⎯
MIN.
3.0
TYP.
5.0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
-40
SERIAL-OUT
SERIAL-OUT
⎯
⎯
⎯
⎯
0.7VDD
-0.3
VDD = 3.0 ~ 5.5 V
15
15
10
5
15
Cascade operation
⎯
16-Bit Constant Current LED Drivers
-5-
MAX.
5.5
17
85
1.0
-1.0
VDD+0.3
0.3VDD
UNIT
V
V
℃
⎯
⎯
⎯
⎯
⎯
ns
ns
ns
ns
ns
MHz
25
mA
V
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Electrical Characteristics (VDD = 5.0 V, Ta = 25°C unless otherwise noted)
CHARACTERISTIC
SYMBOL
CONDITION
MIN.
TYP.
MAX.
Input Voltage “H” Level
VIH
⎯
0.7VDD
⎯
VDD
Input Voltage “L” Level
VIL
⎯
GND
⎯
0.3VDD
Output Leakage Current
IOH
VOH = 17 V
⎯
⎯
1.0
VOL
IOL = 1.0 mA
⎯
⎯
0.4
VOH
IOH = -1.0 mA
4.6
⎯
⎯
⎯
±1.5
±4
REXT = 377Ω
36.0
40.0
44.0
REXT = 900Ω
18.0
20.0
22.0
⎯
0.1
0.5
%/V
⎯
1
3
%/V
Output Voltage ( S - OUT)
DM134B
Output Current (Bit-Bit)
ΔIout
DM135B
DM134B
Output Current (Chip-Chip) Iout
DM135B
IDM134B
Output Voltage Regulation
IDM135B
Supply Voltage Regulation
Reference Voltage Regulation
Pull-Up Resistor
Pull-Down Resistor
(1 channel on)
uA
V
%
REXT = 900Ω
VOUT = 1.2V
mA
(1 channel on)
Vout = 1.2V ~ 5.0V REXT = 377Ω
(% / Vout)
REXT =900Ω
Vdd = 3.0V ~ 5.5V
ΔVrext
Rext = 300Ω ~ 3KΩ
⎯
⎯
±1
% / KΩ
RIN(up)
⎯
150
300
600
KΩ
RIN(down)
⎯
100
200
400
KΩ
Idd
(off)
DM135B
DM134B
Supply Current “ON”
V
REXT = 377Ω
VOUT = 1.2V
% / VDD
DM134B
Supply Current “OFF”
UNIT
Idd
(on)
DM135B
REXT = OPEN, all outputs off
⎯
2
4
REXT = 210Ω, all outputs off
⎯
14
28
REXT = OPEN, all outputs off
⎯
2
4
REXT = 300Ω, all outputs off
⎯
14
28
REXT = 630Ω, all outputs off
⎯
5.5
11
REXT = 210Ω, all outputs on
⎯
14
28
REXT = 300Ω, all outputs on
⎯
14
28
REXT = 630Ω, all outputs on
⎯
5.5
11
16-Bit Constant Current LED Drivers
-6-
mA
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Switching Characteristics (Ta = 25 °C unless otherwise noted)
DM134B
CHARACTERISTIC
Propagation ENABLE-OUTn
Delay Time
(“L” to “H”) CLK-SOUT
Propagation ENABLE-OUTn
Delay Time
(“H” to “L”) CLK-SOUT
Output Current Rise Time
Output Current Fall Time
SYMBOL
tpLH
tpHL
tor
tof
CONDITION
VDD=5.0V
VIH=VDD
VIL=GND
REXT=420Ω
VL=5.0V
RL=107.5Ω
CL=15pF
MIN.
TYP.
MAX.
⎯
110
150
UNIT
⎯
20
25
⎯
95
170
⎯
20
25
⎯
600
800
ns
⎯
45
60
ns
MIN.
TYP.
MAX.
UNIT
⎯
20
40
⎯
20
25
⎯
30
60
⎯
20
25
25
50
100
ns
15
30
60
ns
ns
ns
DM135B
CHARACTERISTIC
Propagation ENABLE-OUTn
Delay Time
(“L” to “H”) CLK-SOUT
Propagation ENABLE-OUTn
Delay Time
(“H” to “L”) CLK-SOUT
Output Current Rise Time
Output Current Fall Time
SYMBOL
tpLH
tpHL
tor
tof
CONDITION
VDD=5.0V
VIH=VDD
VIL=GND
REXT=630Ω
VL=5.0V
RL=150Ω
CL=13pF
16-Bit Constant Current LED Drivers
-7-
ns
ns
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Test Circuit
DC characteristic
IDD
VDD
OUT0
ENABLE
IOL
CLOCK
IIL ,IIH
LATCH
VIL ,VIH
OUT15
SERIAL-IN
R-EXT GND
SERIAL-OUT
I ref
AC characteristic
RL
VDD
VIL ,VIH
OUT0
ENABLE
CL
SW-
CLOCK
MATRIX
LATCH
RL
OUT15
SERIAL-IN
R-EXT GND
SERIAL-OUT
CL
CL
16-Bit Constant Current LED Drivers
-8-
VL
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Timing Diagram
1. CLOCK-SERIAL-IN, SERIAL-OUT, OUTn (current)
tr
tf
twCLK
CLOCK
SERIAL-IN
90%
50%
10%
tsetup
90%
50%
10%
twCLK
50%
thold
50%
50%
tof
tor
90%
50%
10%
OUTn (current)
90%
50%
10%
tpLH
tpHL
50%
50%
SERIAL-OUT
tpHL
tpLH
2. CLOCK-LATCH
50%
CLOCK
SERIAL-IN
“L” level = DATA HOLD
thold(L)
LATCH
50%
50%
tsetup(L)
3. ENABLE-OUTn (current)
ENABLE
50%
50%
tpHL
tpLH
OUTn(current)
16-Bit Constant Current LED Drivers
50%
50%
-9-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Output Current vs. External Resistor
DM134B
100
90
Iout (mA)
80
70
60
50
40
30
20
0
200
400
Rext
600
800
(Ohm)
DM135B
70.00
60.00
Iout (mA)
50.00
40.00
30.00
20.00
10.00
0.00
0
500
1000
1500
2000
2500
3000
3500
Rext (Ohm)
Note:
Conditions: Vref=1.28V
DM134B:Iout ≈ Vref / Rext * 13.1,
DM135B:Iout ≈ Vref / Rext * 13.7.
The resistor should be placed as close to the Rext terminal as possible to avoid the noise
influence.
16-Bit Constant Current LED Drivers
-10-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Output Current Performance vs. Output Voltage
DM134B
Io u t - V o u t
100
90
80
Iout(mA)
70
60
50
40
30
20
10
0
0
0 .2
0 .4
0 .6
0 .8
1
1 .2
1 .4
1 .6
1 .8
2
V o u t(V )
DM135B
Io u t - V o u t
70
60
Iout (mA)
50
40
30
20
10
0
0
0 .2
0 .4
0 .6
0 .8
1
1 .2
1 .4
1 .6
1 .8
2
V o u t (V )
Note:
In order to obtain a good constant current output, a suitable output voltage is necessary. Users
can get related information about the minimum output voltage from the above graphs. Even under
the same output current condition, the minimum output voltage required for each part is different.
16-Bit Constant Current LED Drivers
-11-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Pd - Ta
3.50
Imax - Ta ( DM134 )
100.00
QFN
90.00
3.00
70.00
2.00
Imax (mA)
Pd (W)
2.50
QFN
DIP
80.00
DIP
SOP
1.50
SSOP
1.00
SOP
60.00
50.00
SSOP
40.00
30.00
20.00
0.50
Vdd = 5V
Vout = 1.5V
16bit Active
10.00
0.00
0.00
0
20
40
60
80
100 120 140 160
0
Ta
20
40
60
80
100 120 140 160
Ta
Imax - Ta ( DM135 )
60.00
50.00
DIP
Imax (mA)
40.00
QFN
SOP
SSOP
30.00
20.00
10.00
Vdd = 5V
Vout = 1.5V
16bit Active
0.00
0
20
40
60
80
100 120 140 160
Ta
Note
As the power dissipation of a semiconductor chip is limited by its package and ambient
temperature, this device requires a maximum output current given by an operating condition.
The maximum allowable power consumption (Pd (max)) of this device is calculated as
follows:
(Tj (junction temperature) (max) - Ta (ambient temperature) )(°C )
Pd (max)(Watt ) =
Rth (°C / Watt )
Based on the Pd (max), the maximum allowable current can be calculated as follows:
Iout = ( Pd – VDD‧IDD) / ( # outputs‧Vo‧Duty )
16-Bit Constant Current LED Drivers
-12-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
System Configuration Example
[1] Output current (IOUT)
Sink current is set by the external resistor as shown in the figure of Iout vs. Rext.
[2] LED supply voltage (VLED) setup
VLED = VCE ( Tr Vsat ) + Vf ( LED forward voltage ) + VO ( IC output voltage)
To prevent too much power from dissipating by the higher VLED of the device, an
additional R can be used to reduce the Vout when the outputs consume current is as follows:
R=
VLED − VCE − V f − VO (min)
I O (max) * Bit (max)
VLED = 3~4 (V)
＋
Vf
—
SCAN
OUT0
ENABLE
＋
VCE
—
Vo
CLOCK
LATCH
SERIAL-IN
R-EXT GND
OUT15
R
SERIAL-OUT
CPU
OUT0
ENABLE
CLOCK
LATCH
SERIAL-IN
R-EXT GND
OUT15
SERIAL-OUT
Note
This device has only one ground pin shared by signal, output sink current, and power ground. It is
advisable to pattern the ground layout with minimized inductance so that the switching noise induced
by the input signals and the output sink current would not cause chip malfunction. To prevent drivers’
outputs from damaging by overshoot stresses, it is also advisable not to turn off the drivers and scan
transistors simultaneously. For the QFN package, the IC’s thermal pad, which is internally connected to
the bottom side of chip, should be connected to GND. In addition, a good PCB layout pattern of the
thermal pad is required in order to have a better performance in thermal effect.
16-Bit Constant Current LED Drivers
-13-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Package Outline
P-DIP 24
UNIT：INCH
1.250 ± 0.03
0.355 ± 0.02
0.300
0.258 ± 0.005
θ=7 ~15
0.130 ± 0.05
0.130 ± 0.02
SEATING PLANE
0.210
0.100typ
0.018typ
0.060typ
16-Bit Constant Current LED Drivers
-14-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Package Outline
SOP24
0.020*45°
0.406 ± 0.013
0.295 ± 0.004
UNIT：INCH
0.016typ
0.050typ
0.600 ± 0.014
16-Bit Constant Current LED Drivers
-15-
0.010
0.099± 0.006
0.012max
0.004max
0.035±0.015
θ=0~8
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Package Outline
SSOP24
0.020*45°
0.236 ± 0.008
0.154 ± 0.004
UNIT：INCH
0.012typ
0.025typ
0.064± 0.011
16-Bit Constant Current LED Drivers
0.01max
0.004max
-16-
0.010
0.025+0.025
-0.009
0.341 ± 0.004
θ=0~8
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
Package Outline
QFN32
TOP VIEW
BOTTOM VIEW
0.25 C
D2
D
25
32
25
24
8
17
24
1
17
8
L
E
E2
e
1
32
0.25 C
9
16
16
9
e
b
0.10
M
C AB
A
0.10 C
A3
A1
SEATING PLANE
SYMBOL
A
A1
A3
b
D
D2
E
E2
e
L
y
MIN.
0.70
0
0.18
1.25
1.25
0.30
DIMENSION
(mm)
NOM.
0.75
0.02
0.25 REF
0.23
5.00 BSC
2.70
5.00 BSC
2.70
0.50 BSC
0.40
0.10
yC
MAX.
0.80
0.05
MIN.
27.6
0
0.30
7.09
3.25
49.21
3.25
49.21
0.50
11.81
DIMENSION
(MIL)
NOM.
29.5
0.79
9.84 REF
9.06
196.85 BSC
106.30
196.85 BSC
106.30
19.69 BSC
15.75
3.94
MAX.
31.5
1.97
11.81
127.95
127.95
19.69
Note: 1.DIMENSIONING AND TOLERANCING CONFORM TO ASME Y145.5M-1994.
2. REFER TO JEDEC STD. MO-220 WHHD-2 ISSUE A
16-Bit Constant Current LED Drivers
-17-
Version：A.005
點晶科技股份有限公司
DM134B、DM135B
SILICON TOUCH TECHNOLOGY INC.
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.
16-Bit Constant Current LED Drivers
-18-
Version：A.005