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UCS1903 Datasheet Preview

UCS1903 Datasheet

3-Channel Constant Current LED Driver

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3-Channel Constant Current LED Driver UCS1903
(Products descriptions)
The product UCS1903 is the three-channel LED drive control circuit, internal integration MCU
digital interface, data latches, LED high voltage driver etc. Realize the alone grey scale because
through the periphery MCU to control this chip. The cascade connection control realizes the
outdoors big screen Bitmap luminous, Product has the excellent performance, and quality is
reliable.
(Characteristics )
Output power: 15V max
Internal integration Regulator tube and the IC VDD PIN need to add resistance connection the
power. External No need to add regulator tube
256 grey scales can adjustment
Internal integration RC oscillator, clock synchronous according to data signal, the next Chip can
receive the Original signal because the before Chip receiver had finished and itself has function
of the Automatic correction signal.
Internal integration Reset circuit
PWM can control 256 grey scales, Scan frequency no less than 400 Hz / s
Serial interface, through the Single line finish the data receiving and decoding.
Linear transmission, can unlimited cascade connection
No need to add any circuit if transmission distance over 10 meters of tow points.
The low speed model cascade numbers are not less than 512 points and high model not less than
1024 points If the Refresh frequency 30Hz / s.
Data sending speed can reach to 400Kbps and 800Kbps two kinds
Support preset constant current drive mode, according to the Red lights luminous intensity weak
adjustment output current higher than the OUTG and OUTB. The White better
引出端排列 Pin Configurations:
OUTR
OUTG
VDD
SET
1




ETC

UCS1903 Datasheet Preview

UCS1903 Datasheet

3-Channel Constant Current LED Driver

No Preview Available !

OUTB
GND
DIN
DO
引出端功能 PIN functions:
序号
1
2
3
4
5
6
7
符号
OUTR
OUTG
OUTB
GND
DOUT
DIN
SET
管脚名称
The output of the R
channel
The output of the G
channel
The output of the B
channel
Ground
功能描述
Red() PWM 控制输出
Green(绿) PWM 控制输出
Blue() PWM 控制输出
接地 connection ground
data output
data input
Mode Set
display input data
connection VDD: low-speed model; free:
high-speed mode
8 VDD Logic power
(如无特殊说明,TA 25 ℃,VSS 0 V
Maximum ratings
参数 Parameter
符号
Symbol
范围 Ratings
逻辑电源电压
logic power Voltage
VDD
6.0 ~ + 7.0
输出端口耐压 Output
compression Voltage
逻辑输入电压 Input Voltage
工作温度 Operating Junction
Temperature
VOUT
VI1
Topt
12
− 0.5 VDD 0.5
− 25 ~ + 85
储存温度 Storage
Temperature Range
Tstg
− 55 ~ + 150
(如无特殊说明,TA − 20 ~ + 70 ℃,VSS 0 V
Working scope:
单位
Unit
V
V
V
参数 Parameter
符号
Symbol
最小 Min
典型
Typ
最大 Max
单位
Units
测试条件
Conditions
2


Part Number UCS1903
Description 3-Channel Constant Current LED Driver
Maker ETC
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UCS1903 Datasheet PDF






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