DM413
Version
: A.003
Issue Date : 2012/09/28
File Name : SP-DM413-A.003.doc
Total Pages : 18
3-CHANNEL CONSTANT CURRENT LED DRIVERS
WITH PROGRAMMABLE PWM OUTPUTS
新竹市科學園區展業一路 9 號 4 樓之 3
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
DM413
DM413
3-CHANNEL CONSTANT CURRENT LED DRIVERS
WITH PROGRAMMABLE PWM OUTPUTS
General Description
DM413 is a PWM enabled LED driver specifically designed for LED lighting or display
applications. 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 and clock
buffer outputs are designed for cascading another chip. Additionally the Output Polarity Reverse
function is designed to adapt to more high power LED applications.
Features
z
z
z
z
z
z
z
z
Maximum constant current outputs: 100mA determined by three external resistors
Maximum sinking output voltage: 17V
Maximum serial-in clock frequency: 20 MHz
Built-in buffers for cascading clock and data to next driver
PWM free-running capability (refresh rate (~ 400 Hz) with internal oscillator (~ 6.5 MHz))
Selectable modes for PWM control:
8-bits luminance data with PWM current outputs (8 bits mode)
8-bits luminance data and 6-bits global brightness data (14 bits mode)
8-bits luminance data and 5-bits individual color correction data (13 bits mode)
Output polarity reverse function
TTL/CMOS compatible input
Applications
z
z
z
LED Decorative Lighting
Indoor/Outdoor LED Video or Message Display
PWM Signal Generator
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 1
DM413
ROUT
RREX
GOUT
GREX
BOUT
BREX
Block Diagram
VCC
GND
Bandgap
Reference
3 x Current Controller/Driver
POL
Polarity
Selector
14-bits
Counter
3 x 14-bits PWM Generator
18
Internal
Oscillator
24
Mode
Selector B
40
5 x 8-bits Latch
STB
40
MOD
DAI
Mode
Selector A
5 x 8-bits Shift Register*1
CKI
*1
SDO
DAO
CKO
For 13-bits/5byte mode. For 14-bits/4byte mode, there are 4 x 8-bits S-Rs. For 8-bits/3byte mode, there are 3 x 8-bits S-Rs.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 2
DM413
Pin Connection
DAO
1
16
VCC
CKO
2
15
DAI
MOD
3
14
CKI
POL
4
13
STB
ROUT
5
12
SDO
GOUT
6
11
RREX
BOUT
7
10
GREX
GND
8
9
BREX
Pin Description
PIN No.
1
PIN NAME
DAO
2
CKO
3
MOD
FUNCTION
Serial data output terminal.
Clock output terminal.
Input mode selection:
‘H’ for 13bits/5byte mode,
‘L’ for 14bits/4byte mode,
*1
‘Floating’
for 8bits/3byte mode.
PWM current output polarity selection:
4
POL
‘H’ for positive polarity,
‘L’ for negative polarity.
5~7
8
9~11
12
R(G、B)OUT Sink constant current outputs (open-drain).
GND
Ground terminal.
resistors connected between REXTR(G、B) and GND for
R(G、B)REX External
driver current value setting.
Serial data output trigger mode selection:
SDO
‘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:
13
STB
‘H’ means data is latched,
‘L’ means data on shift register goes through latch (level latch).
*1
14
CKI
Synchronous clock input terminal for serial data transfer. Data is
sampled at the rising edge of CKI.
15
DAI
Serial data input terminal.
16
VCC
Power supply terminal.
When choosing “floating” mode, a capacitor (>100pF) should be connected between MOD and GND.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 3
DM413
Equivalent Circuit of Inputs and Outputs
1. CKI, DAI, STB, SDO terminals
VDD
INPUT
GND
2. MOD, POL terminals
VDD
INPUT
GND
3. CKO, DAO terminal
VDD
OUT
GND
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 4
DM413
Maximum Ratings (Ta=25°C, Tj(max) = 140°C)
SYMBOL
RATING
UNIT
Supply Voltage
CHARACTERISTIC
VDD
-0.3 ~ 7.0
V
Input Voltage
VIN
-0.3 ~ VDD+0.3
V
Output Current
IOUT
110
mA
Output Voltage
VOUT
-0.3 ~ 17
V
Input Clock Frequency
FCKI
25
MHz
GND Terminal Current
IGND
330
mA
Power Dissipation
0.82 ( SSOP16 : Ta=25°C)
PD
Thermal Resistance
W
0.86 ( SOP16 : Ta=25°C)
115.9 ( SSOP16 )
Rth(j-a)
°C/W
110.9 ( SOP16 )
Operating Temperature
Top
-40 ~ 85
°C
Storage Temperature
Tstg
-55 ~ 150
°C
Recommended Operating Condition
CHARACTERISTIC
SYMBOL
CONDITION
MIN.
TYP.
MAX.
UNIT
Supply Voltage
VDD
⎯
3.3
5.0
5.5
V
Output Voltage
VOUT
Driver On
1.0
⎯
10
Output Voltage
VOUT
Driver Off
⎯
⎯
17
Output Current
IOH
IO
IOL
*1
*2
OUT (R, G , B)
SERIAL-OUT
VIH
Input Voltage
VDD = 3.3 V ~ 5.5V
VIL
Input Clock Frequency
FCKI
STB Pulse Width
Single Chip Operation
tw STB
CKI Pulse Width
Set-up Time for DAI
5
⎯
100
⎯
⎯
1.5
⎯
⎯
-10
⎯
VDD
0.0
⎯
max{0.8 or
0.2VDD}
⎯
⎯
20M
20
⎯
⎯
tw CLK
20
⎯
⎯
25
⎯
⎯
Hold Time for DAI
thold(D)
25
⎯
⎯
Set-up Time for STB
tsetup(L)
20
⎯
⎯
FOSC
5.2
6.5
7.8
Internal Oscillator Frequency
*1
*2
mA
min{2.0 or
0.8VDD}
tsetup(D)
VDD = 3.3 V ~ 5.5V
V
V
Hz
ns
MHz
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-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 5
DM413
Electrical Characteristics (VDD = 5.0 V, Ta = 25°C unless otherwise noted)
CHARACTERISTIC
SYMBOL
CONDITION
MIN.
TYP.
MAX.
Input Voltage “H” Level
VIH
TTL/CMOS logic level
min{2.0 or
0.8VDD}
⎯
VDD
Input Voltage “L” Level
VIL
TTL/CMOS logic level
GND
⎯
max{0.8 or
0.2VDD}
Output Leakage Current
IOL
VOH = 17 V
⎯
⎯
1.0
VOL
IOL = 10 mA
⎯
⎯
0.2
VOH
IOH= -1.5 mA
VDD-0.2
⎯
⎯
⎯
±0.5
±1
%
4.5
5
5.5
mA
⎯
0.1
0.5
Output Voltage (S-OUT)
Output Current Skew
*1
(Channel-to-Channel)
IOL1
Output Current Skew
*2
(Chip-to-Chip)
IOL2
Output Voltage Regulation
Supply Voltage Regulation
VOUT = 1.0 V
UNIT
V
uA
V
REX = 120 Ω
% / VOUT
% / VDD
REX = 120 Ω
VOUT = 1 V ~ 3 V
REX = 120 Ω
%/V
⎯
⎯
2
⎯
1.9
⎯
⎯
1.6
⎯
VOUT = 1.0 V
Supply Current
*3
IDD(analog)
REX = 6 Ω
all outputs turn on
IDD(digital)
CKI = 20MHz
mA
*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
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Page 6
DM413
Switching Characteristics (VDD = 5.0V, Ta = 25°C unless otherwise noted)
CHARACTERISTIC
SYMBOL
Propagation Delay
CKI-to-CKO
(‘L to ‘H’)
CKO-to-DAO (SDO = ‘L’)
Propagation Delay
CKI-to-CKO
(‘H’ to ‘L’)
CKO-to-DAO (SDO = ‘H’)
CONDITION
MIN.
TYP.
MAX.
⎯
6.0
⎯
VIH = VDD
⎯
7.8
⎯
VIL = GND
⎯
7.0
⎯
REXs = 33 Ω
⎯
3.6
⎯
VL = 5.0 V
⎯
7.2
⎯
⎯
17.5
⎯
⎯
⎯
3
ms
MIN.
TYP.
MAX.
UNIT
⎯
9.0
⎯
VIH = VDD
⎯
13.2
⎯
VIL = GND
⎯
9.2
⎯
REXs = 33 Ω
⎯
7.0
⎯
VL = 5.0 V
⎯
32.5
⎯
⎯
23.5
⎯
⎯
⎯
3
tpLH
tpHL
Output Current Rise Time
tor
Output Current Fall Time
RL = 180 Ω
tof
Output Current
ns
CL = 13 pF
*1
top
(Propagation Delay after STB low)
UNIT
Switching Characteristics (VDD = 4V, Ta = 25°C unless otherwise noted)
CHARACTERISTIC
SYMBOL
Propagation Delay
CKI-to-CKO
(‘L to ‘H’)
CKO-to-DAO (SDO = ‘L’)
Propagation Delay
CKI-to-CKO
(‘H’ to ‘L’)
CKO-to-DAO (SDO = ‘H’)
tpLH
tpHL
Output Current Rise Time
tor
Output Current Fall Time
tof
Output Current
CONDITION
RL = 180 Ω
CL = 13 pF
*1
top
(Propagation Delay after STB low)
ns
ms
VL
VDD
RL
REXn
REX
OUTn
DAO
CKI
CKO
CL
CL
CL
CL
Switching Characteristics Test Circuit
*1
Reload the new PWM data at the end of the front PWM frame.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 7
DM413
Constant-Current Output
Constant-current value of each output channel is set by an external resistor connected between
the R(G、B)REX pin and GND individually. Varying the resistor value can adjust the current scale
ranging from 5mA to 100mA. The output current value is calculated roughly by the following
equation:
Iout(mA) ~
0.6 V
× 1000
REX (ohm)
Output Current as a Function of REX value
110
100
90
Iout (mA)
80
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
REX (ohm)
Output Current as a Function of Output Voltage
110
100
90
Iout (mA)
80
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
2.2
2.4
2.6
2.8
3
Vout (volt)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 8
R[7]
R[6]
R[5]
R[4]
R[3]
R[7]
3-CHANNEL CONSTANT CURRENT LED DRIVERS
R[6]
R[5]
R[4]
R[6]
R[5]
R[2]
R[4]
G[5]
G[4]
G[3] G[2]
G[1]
G[0]
B[7]
LSB MSB
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Version:A.003
R[0]
B[5]
B[4]
B[3]
G[7]
MSB
G[6]
G[5]
G[4]
G[3]
G[2]
G[1]
G[0]
LSB
B[7]
MSB
R[2]
R[1]
LSB
R[0]
MSB
G[7]
G[6]
B[2]
B[1]
*3 The MSB, R[7], is the first serial input bit in all modes.
G[3]
Luminance G
G[4]
G[2]
B[6]
B[0]
r[4]
LSB MSB
B[5]
r[3]
G[1]
B[4]
1 PWM frame
16320(255 × 64) active clocks
LSB
G[0]
B[3]
r[1]
MSB
B[7]
B[2]
r[2]
Correction R
Luminance B
16384(214) internal clocks
x Brightness [1,1,1,1,1,1] )
G[5]
Active clocks per frame*1 = Luminance[7:0] × 64
LSB
Luminance G
*2 Correction R(G、B) is correlated with Luminance R(G、B).
POL is high
POL is low
PWM clock
B[6]
Luminance B
Active clocks per frame*1 = Luminance[7:0] × ( Global Level[5:0] + 1 )
R[1]
R[3]
Luminance R
R[3]
G[7] G[6]
LSB MSB
R[1] R[0]
Luminance G
Active clocks per frame*1 = Luminance[7:0] × ( Correction[4:0]*2 + 33 )
*1 Example for the maximum active clocks： ( Luminance [1,1,1,1,1,1,1,1]
MSB*3
R[7]
8-bits/3byte mode
MSB*3
R[2]
Luminance R
14-bits/4byte mode
MSB*3
Luminance R
13-bits/5byte mode
r[0]
g[4]
B[1]
B[6]
LSB
B[0]
LSB MSB
g[2]
B[5]
X
b[4]
L[5]
L[4]
B[3]
Luminance B
b[3]
b[2]
b[1]
Correction B
B[2]
L[3]
B[1]
L[2]
b[0]
L[0]
X
LSB
on
off
on
off
X:don’t care
LSB
B[0]
LSB
L[1]
Global Level (Brightness)
LSB MSB
g[0]
MSB
g[1]
B[4]
X
X:don’t care
g[3]
Correction G
DM413
Data Format
Page 9
DM413
Timing Diagram
1. CKI-DAI, CKO, DAO
2. CKI-STB
3. STB-OUTn
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 10
3-CHANNEL CONSTANT CURRENT LED DRIVERS
RA[7]
RB[7]
1
RB[7]
1
RB[6]
2
RB[6]
2
RA[6]
RA[7]
RA[6]
RB[6]
2
RB[7]
1
RA[5]
RB[5]
3
RB[5]
3
RA[5]
RB[5]
3
1 cell
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Version:A.003
*3 8-bits/3 byte mode (MOD = ’floating’).
*214-bits/4 byte mode (MOD = ‘L’).
*5 SDO = ‘L’
*4 SDO = ‘H’
BPWM
BPWM
BOUT
< 1 frame
RC[7]
1
RC[7]
1
GPWM
BB[0]
24
LB[0]
32
RB[7]
RB[7]
RC[7]
1
GPWM
BB[1]
23
LB[1]
31
UDA
UDA
UDB
40
GOUT
BB[2]
22
LB[2]
30
bA[0]
bA[0]
bB[0]
39
RPWM
bA[1]
bA[1]
bB[1]
38
RPWM
*113-bits/5 byte mode (MOD = ‘H’).
BA[0]
24
23
BA[1]
LA[0]
32
UDA
LA[1]
31
bA[0]
40
ROUT
POL*6
STB
DAI*3
CKI*3
DAI*2
CKI*2
DAO*5
DAO*4
DAI*1
CKI*1
(CKO)
39
BF[2]
22
LF[2]
30
bE[0]
BF[1]
23
LF[1]
31
bE[0]
bF[0]
39
UDE
BF[0]
24
LF[0]
32
UDE
UDF
40
RG[7]
1
RG[7]
1
RF[6]
< 1 frame
RF[7]
RF[7]
RG[7]
1
*7 PWM is inversion of PWM.
*6 POL is independent of STB.
bE[1]
bE[1]
bF[1]
38
BPWM *7
GPWM *7
RPWM *7
OFF
ON
OFF
ON
OFF
ON
Low
High
Low
High
0
1
Low
High
0
1
Low
High
0
1
0
1
0
1
Low
High
DM413
Timing Diagram
Page 11
DM413
Power Dissipation
Notice that 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:
1.2
Power Dissipation Pd(W)
SOP16
Tj(max)=140 °C
1.0
Rth(sop16)=110.9 °C/Watt
SSOP16
0.8
Rth(ssop16)=115.9 °C/Watt
0.6
0.4
0.2
0.0
0
20
40
60
80
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 × IoutR × DutyR + VoutG × IoutG × DutyG + VoutB × IoutB × DutyB < Pd(max)(W)– VCC(V) × IDD(A)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
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Page 12
VLED
3-CHANNEL CONSTANT CURRENT LED DRIVERS
DM413
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Version:A.003
DAO
CKO
BOUT
#n
STB
DAO
CKO
CKI
DAI
BOUT
BREX
ROUT
GOUT
RREX
GREX
VLED
#1
ROUT
STB
DAI
CKI
#n-1
DM413
DAO
CKO
BOUT
GOUT
GREX
BREX
ROUT
RREX
GOUT
DM413
System
Controller
Memory
STB
DAI
CKI
BREX
GREX
RREX
#2
DM413
ROUT
DAO
CKO
BOUT
GOUT
VLED
．SDO and MOD are connected to “H” or “L” or “F”
by system application
．POL are connected to “H”
STB
DAI
CKI
BREX
GREX
RREX
VLED
DM413
Typical Application
Page 13
ILED
3-CHANNEL CONSTANT CURRENT LED DRIVERS
1
2
3
4
DD311
5
ILED
RSET
VCC
1
2
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Version:A.003
DD311 is a single-channel constant current LED driver designed to
driver high power LED. It can provide a maximum sink current of
1A, adjustable by an external resistor(RSET).
3
4
DD311
When POL(Pin4) is connected to “L”, DM413 can be regarded as a
PWM signal generator.Three REXs(Pin9,10,11) can be connected
to GND directly, and each output provides the maximum 20mA
constant current. Select proper pull-high resistances to decide the
fan-out capability and switching current. By means of the connection
between three PWM signal output and the switches of high constant
current circuit, system will adapt to more high power LED
applications.
RSET
VCC
5
1
14
13
4
10
9
8
11
7
6
12
15
3
5
16
2
3
1
2
4
5
GND
VCC
DD311
DM413
VCC
RSET
Pull-High Resistance
ILED
VLED
DM413
Typical Application
Page 14
DM413
Package Outline Dimension
SSOP16
SYMBOLS
A
A1
A2
b
c
D
E
Min.
1.346
0.102
1.245
0.190
0.178
4.801
5.791
e
E1
L
θ°
Typ.
4.902
-
Max.
1.753
0.254
1.499
0.305
0.350
5.004
6.200
0.635 BSC
3.800
0.400
0
-
4.000
1.270
8
unit:mm
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 15
DM413
Package Outline Dimension
SOP16
SYMBOLS
A
A1
b
c
D
E
e
H
L
θ°
Min.
1.346
0.051
0.330
0.190
9.800
3.800
Typ.
Max.
1.753
0.250
0.510
0.250
10.008
4.000
1.270 BSC
5.791
6.200
0.400
1.270
0
8
unit:mm
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 16
DM413
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.
Silicon Touch Technology, Inc. reserve the right to make changes to their
products or to discontinue any product or service without notice, and advise
customers to obtain the latest version of relevant information to verify, before
placing orders, that information being relied on is current and complete.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.003
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 17