View DM413_179688.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DM413
Version : A.002 Issue Date : 2008/9/23 File Name : SP-DM413-A.002.doc Total Pages : 18
3-CHANNEL CONSTANT CURRENT LED DRIVERS WITH PROGRAMMABLE PWM OUTPUTS
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.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
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 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 LED Decorative Lighting Indoor/Outdoor LED Video or Message Display PWM Signal Generator
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 1

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Block Diagram
GOUT GREX BOUT ROUT BREX RREX
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
STB
5 x 8-bits Latch
MOD Mode Selector A
40
SDO
DAI
5 x 8-bits Shift Register*1
DAO
CKI
CKO
*1
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.002
Page 2

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Pin Connection
DAO CKO MOD POL ROUT GOUT BOUT GND
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
VCC DAI CKI STB SDO RREX GREX BREX
Pin Description PIN No. 1 2 PIN NAME DAO CKO FUNCTION Serial data output terminal. Clock output terminal. Input mode selection:
`H' for 13bits/5byte mode, `L' for 14bits/4byte mode, `Floating'
*1
3
MOD
for 8bits/3byte mode.
PWM current output polarity selection: 4 5~7 8 9~11 12 POL
`H' for positive polarity, `L' for negative polarity.
R(GB)OUT Sink constant current outputs (open-drain). GND Ground terminal. R(GB)REX External resistors connected between REXTR(GB) and GND for 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 14 15 16 STB CKI DAI VCC
`H' means data is latched, `L' means data on shift register goes through latch (level latch).
Synchronous clock input terminal for serial data transfer. Data is sampled at the rising edge of CKI. Serial data input terminal. Power supply terminal.
*1
When choosing "floating" mode, a capacitor (>100pF) should be connected between MOD and GND.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 3

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
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.002
Page 4

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Maximum Ratings (Ta=25C, Tj(max) = 140C)
CHARACTERISTIC Supply Voltage Input Voltage Output Current Output Voltage Input Clock Frequency GND Terminal Current Power Dissipation Thermal Resistance Operating Temperature Storage Temperature SYMBOL VDD VIN IOUT VOUT FCKI IGND PD Rth(j-a) Top Tstg RATING -0.3 ~ 7.0 -0.3 ~ VDD+0.3 110 -0.3 ~ 17 25 330 0.82 ( SSOP16 : Ta=25C) 0.86 ( SOP16 : Ta=25C) 115.9 ( SSOP16 ) 110.9 ( SOP16 ) -40 ~ 85 -55 ~ 150 UNIT V V mA V MHz mA W C/W C C
Recommended Operating Condition
CHARACTERISTIC Supply Voltage Output Voltage Output Voltage SYMBOL VDD VOUT VOUT IO Output Current IOH IOL VIH Input Voltage VIL VDD = 4.5 V ~ 5.5V CONDITION Driver On Driver Off
*1
MIN. 4.5 1.0 5 min{2.0 or 0.8VDD} 0.0
TYP. 5.0
MAX. 5.5 10
UNIT V V
*2
17 100 1.5 -10 VDD max{0.8 or 0.2VDD} 20M 7.8 MHz ns V mA
OUT (R, G , B) SERIAL-OUT
Input Clock Frequency STB Pulse Width CKI Pulse Width Set-up Time for DAI Hold Time for DAI Set-up Time for STB Internal Oscillator Frequency
FCKI tw STB tw CLK tsetup(D) thold(D) tsetup(L) FOSC
Single Chip Operation
20 20 25 25 20 5.2
6.5
Hz
VDD = 4.5 V ~ 5.5V
*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-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 5

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Electrical Characteristics (VDD = 5.0 V, Ta = 25C unless otherwise noted)
CHARACTERISTIC Input Voltage "H" Level Input Voltage "L" Level Output Leakage Current SYMBOL VIH VIL IOL VOL Output Voltage (S-OUT) VOH Output Current Skew *1 (Channel-to-Channel) Output Current Skew *2 (Chip-to-Chip) Output Voltage Regulation Supply Voltage Regulation IOL1 VOUT = 1.0 V REX = 120 IOL2 REX = 120 VOUT = 1 V ~ 3 V REX = 120 VOUT = 1.0 V Supply Current
*3
CONDITION TTL/CMOS logic level TTL/CMOS logic level VOH = 17 V IOL = 10 mA IOH= -1.5 mA
MIN. min{2.0 or 0.8VDD} GND VDD-0.2
TYP. 0.5
MAX. VDD max{0.8 or 0.2VDD} 1.0 0.2 1
UNIT
V
uA
V
%
4.5
5
5.5
mA
% / VOUT % / VDD

0.1
0.5 %/V 2
IDD(analog) IDD(digital)
REX = 6 all outputs turn on CKI = 20MHz
1.9
mA
1.6
*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.002
Page 6

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Switching Characteristics (VDD = 5.0V, Ta = 25C unless otherwise noted)
CHARACTERISTIC Propagation Delay (`L to `H') Propagation Delay (`H' to `L') CKI-to-CKO tpLH CKO-to-DAO (SDO = `L') CKI-to-CKO tpHL CKO-to-DAO (SDO = `H') tor tof top
*1
SYMBOL
CONDITION
MIN.
TYP. 6.0 7.8 7.0 3.6 7.2 17.5
MAX. 3
UNIT
VIH = VDD VIL = GND REXs = 33 VL = 5.0 V RL = 180 CL = 13 pF

ns
Output Current Rise Time Output Current Fall Time Output Current (Propagation Delay after STB low)
ms
Switching Characteristics (VDD = 4V, Ta = 25C unless otherwise noted)
CHARACTERISTIC Propagation Delay (`L to `H') Propagation Delay (`H' to `L') CKI-to-CKO tpLH CKO-to-DAO (SDO = `L') CKI-to-CKO tpHL CKO-to-DAO (SDO = `H') tor tof top
*1
SYMBOL
CONDITION
MIN.
TYP. 9.0 13.2 9.2 7.0 32.5 23.5
MAX. 3
UNIT
VIH = VDD VIL = GND REXs = 33 VL = 5.0 V RL = 180 CL = 13 pF

ns
Output Current Rise Time Output Current Fall Time Output Current (Propagation Delay after STB low)
ms
VL VDD RL REXn REX CKI CL OUTn
DAO CKO 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.002
Page 7

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Constant-Current Output
Constant-current value of each output channel is set by an external resistor connected between the R(GB)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 x 1000 REX (ohm)
Output Current as a Function of REX value
110 100 90 80
Iout (mA)
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 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 2.2 2.4 2.6 2.8 3
Vout (volt)
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 8
13-bits/5byte mode
Active clocks per frame*1 = Luminance[7:0] x ( Correction[4:0]*2 + 33 )
Luminance R Luminance G Correction R Correction G X:don't care b[0] X LSB r[0] LSB MSB LSB MSB g[4] g[3] g[2] g[1] g[0] b[4] b[3] b[2] b[1] Correction B B[2] LSB MSB B[1] B[0] r[4] r[3] r[2] r[1] G[5] LSB MSB G[4] G[3] G[2] G[1] G[0] B[7] B[6] B[5] B[4] B[3] Luminance B
Data Format
R[7]
R[6]
R[5]
R[4]
R[3]
R[2]
R[1] R[0]
G[7] G[6]
MSB*3
LSB MSB
14-bits/4byte mode
Active clocks per frame*1 = Luminance[7:0] x ( Global Level[5:0] + 1 )
Luminance R X:don't care B[2] X X LSB B[1] B[0] L[5] MSB G[7] MSB LSB MSB G[6] G[5] G[4] G[3] G[2] G[1] G[0] B[7] B[6] B[5] B[4] B[3]
Luminance G
Luminance B
Global Level (Brightness) L[4] L[3] L[2] L[1] L[0] LSB
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
R[7]
R[6]
R[5]
R[4]
R[3]
R[2]
R[1]
R[0]
SILICON TOUCH TECHNOLOGY INC.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Luminance G R[1] LSB MSB LSB R[0] G[7] G[6] G[5] G[4] G[3] G[2] G[1] G[0] B[7] MSB B[6] B[5] Luminance B B[4] B[3] B[2] B[1] B[0] LSB
MSB*3
LSB
8-bits/3byte mode
Active clocks per frame*1 = Luminance[7:0] x 64
Luminance R
R[7]
R[6]
R[5]
R[4]
R[3]
R[2]
MSB*3
Version:A.002
x Brightness [1,1,1,1,1,1] ) 16384(214) internal clocks 16320(255 x 64) active clocks 1 PWM frame
*1 Example for the maximum active clocks ( Luminance [1,1,1,1,1,1,1,1]
PWM clock
POL is low
POL is high
on off on off
*2 Correction R(GB) is correlated with Luminance R(GB).
Page 9
DM413
*3 The MSB, R[7], is the first serial input bit in all modes.

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Timing Diagram
1. CKI-DAI, CKO, DAO
2. CKI-STB
3. STB-OUTn
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 10
1 cell 3 1 1
High Low
39
40
1
2
38
39
40
38
39
40
CKI*1 (CKO)
1
DAI*1 RB[5] bF[1] UDF
0 1
bA[0] bF[0] RG[7]
UDA
RB[7]
RB[6]
bB[1]
bB[0]
UDB
RC[7]
Timing Diagram
DAO*4 UDE
RA[7] bE[1] bE[0]
RA[6]
RA[5]
bA[1]
bA[0]
UDA RB[7]
RF[7]
0
1
DAO*5
RA[7] bE[1] bE[0] UDE RF[7]
RA[6]
RA[5]
bA[1]
bA[0]
UDA
RB[7]
RF[6]
0
31 1 1
32
1
2
3
30
31
32
30
31
32
High
CKI*2
Low
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
1
DAI*2
LA[1]
LA[0] RB[5] LB[2] LB[1] LB[0] RC[7] LF[2] LF[1] LF[0]
RB[7]
RB[6]
RG[7]
0
SILICON TOUCH TECHNOLOGY INC.
23 1 22 23 24
24
1
2
3
22
23
24
1
High
CKI*3
Low
3-CHANNEL CONSTANT CURRENT LED DRIVERS
1
DAI*3 RB[5] BB[2] BB[1] BB[0] RC[7] BF[2]
BA[1]
BA[0]
RB[7]
RB[6]
BF[1]
BF[0]
RG[7]
0
High
STB
Low
POL*6 < 1 frame
< 1 frame
High
Low
ON
ROUT
RPWM
RPWM
RPWM *7
OFF
ON
Version:A.002
GPWM GPWM BPWM BPWM
GOUT
GPWM *7
OFF
ON
BOUT
BPWM *7
OFF
*113-bits/5 byte mode (MOD = `H').
*4 SDO = `H' *5 SDO = `L'
*6 POL is independent of STB. *7 PWM is inversion of PWM.
*214-bits/4 byte mode (MOD = `L').
Page 11
DM413
*3 8-bits/3 byte mode (MOD = 'floating').

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
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
SOP16
Power Dissipation Pd(W)
1.0
SSOP16
Tj(max)=140 C Rth(sop16)=110.9 C/Watt Rth(ssop16)=115.9 C/Watt
0.8 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 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
Version:A.002
Page 12
VLED
VLED
Typical Application
Memory
RREX ROUT GOUT BREX GREX GOUT ROUT
RREX
GREX
BREX BOUT
DM413 #1
DAO STB DAI CKO CKI
DM413 #2
BOUT
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
System Controller
CKI DAI STB
CKO DAO
SILICON TOUCH TECHNOLOGY INC.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
VLED
VLED
POL are connected to "H" SDO and MOD are connected to "H" or "L" or "F" by system application
Version:A.002
ROUT GOUT RREX GREX BOUT
ROUT
RREX
GOUT
GREX
BOUT
DM413
CKO DAO
BREX
DM413 #n-1
BREX
CKO
CKI
CKI DAI STB
DAO
#n
DAI
STB
Page 13
DM413
VLED
Typical Application
VCC
VCC
VCC
ILED
RSET ILED ILED
DD311
RSET RSET
1 4 5 2 3 1 2 3
DD311
DD311
4 5
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
SILICON TOUCH TECHNOLOGY INC.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
VCC
Pull-High Resistance
1 2 3 4 5 6 7 8 16 15 14
1
2
3
4
5
Version:A.002
DM413
13 12 11 10 9
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.
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).
GND
Page 14
DM413

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Package Outline Dimension
SSOP16 Unit: mm
16
9
3.91 1 0.229 0.635 8 0.3Max 1.63MAX
5.99
1.5
0.254
0.635 0.15
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 15

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
DM413
Package Outline Dimension
SOP16 Unit: mm
16
9
1 0.56 1.27
8 0.51
10 1.5 1.75 0.25
4.0MAX
6.2MAX
1.27 0.25
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 16

SILICON TOUCH TECHNOLOGY INC.
9 7 1 9-7F-1, Prosperity Road, Hsin-Chu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
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.
3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 17

▲Up To Search▲

Price & Availability of DM413

	To Download DM413 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .