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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
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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
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LED Decorative Lighting
Indoor/Outdoor LED Video or Message Display
PWM Signal Generator
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 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
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.