Document
DM13C
Version : A.006 Issue Date : 2015/04/17 File Name : SP-DM13C-A.006.doc Total Pages : 27
16-bit Constant Current LED Driver with Error Detection
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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
DM13C
16-bit Constant Current LED Driver with Error Detection
DM13C
General Description DM13C is a constant-current sink driver specifically designed for LED display applications.
The device incorporates shift registers, data latches, and constant current circuitry on the silicon CMOS chip. The maximum output current value of all 16 channels is adjustable by a single external resistor. Its built-in open/short detection circuits help users detect LED failures. System retrieve the error messages to indicate which channel has failure by serial output data. The thermal shutdown function provides the over temperature protection.
Features
Constant-current outputs: 5mA to 90mA adjustable by one external resistor Maximum output voltage: 17V Maximum clock frequency: 25MHz Built-in real-time LED open/short detection Fast detecting response: 0.1us (min.) Over temperature protection: thermal shutdown (junction temperature > 180°C)
Package and pin assignment compatible to conventional LED drivers (ST2221C, DM134/5/6) Power supply voltage: 3.3V to 5.5V Bit-to-bit skew : ±3% @ 25mA~90mA Chip-to-chip skew : ±6% @ 25mA~90mA
±6% @ 5mA~25mA
±10% @ 5mA~25mA
Applications Indoor/Outdoor LED Video Display LED Variable Message Signs (VMS) System
Package Types DIP24, SOP24, SOP24B, SSOP24, TSSOP24 (with exposed pad), QFN32 (with exposed pad)
16-bit Constant Current LED Driver with Error Detection
Version:A.006
、、, Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 1
Block Diagram
LED O/S Detection Selector
DM13C
OUT 0
OUT 15
VCC GND
LED Open / Short Detector
REXT
Temperature Sensor Voltage Reference
16
16-channel Constant Current Driver
EN 16
16
LAT 16 bit Latch Register
16
DCK
16 bit Shift Register
DAO
DAI
16-bit Constant Current LED Driver with Error Detection
Version:A.006
、、, Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 2
DM13C
Pin Connection
GND DAI DCK LAT OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
1 2 3 4 5 6 7 8 9 10 11 12
DIP24 SOP24 SSOP24 TSSOP24
(top view)
24 VDD 23 REXT 22 DAO 21 EN 20 OUT15 19 OUT14 18 OUT13 17 OUT12 16 OUT11 15 OUT10 14 OUT9 13 OUT8
REXT DAO
EN GND OUT15 OUT14 OUT13 OUT12
OUT11 OUT10 OUT9 OUT8 OUT7 OUT6 OUT5 OUT4
25 26 27 28 29 30 31 32 24 1
23 2
22 3
21 QFN32
20
4 5
19 (bottom view) 18
6 7
17 8 16 15 14 13 12 11 10 9
GND GND VDD VDD GND GND GND GND
DAI DCK LAT GND OUT0 OUT1 OUT2 OUT3
Pin Description
PIN No. DIP24/SOP24/SSOP24/TSSOP24: 1 TSSOP24: exposed pad QFN32: 1, 2, 5, 6, 7, 8, 12, 29,
exposed pad
DIP24/SOP24/SSOP24/TSSOP24: 2 .