参数资料
型号: TLC5945RHBT
厂商: Texas Instruments
文件页数: 17/30页
文件大小: 0K
描述: IC LED DRIVER LINEAR 32-QFN
标准包装: 250
恒定电流:
拓扑: PWM
输出数: 16
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 颜色
频率: 30MHz
电源电压: 3 V ~ 5.5 V
输出电压: 17V
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
TLC5945
www.ti.com
SLVS755 – MARCH 2007
Figure 14 . The next SCLK pulse, which will be the clock for receiving the MSB of the next grayscale data,
transmits MSB-1 of SID. If output voltage is < 0.3 V (typical) when the output sink current turns on, LOD status
flag becomes active. The LOD status flag is an internal signal which pulls XERR pin down to low when the LOD
status flag becomes active. The delay time, tpd2 (1 μ s maximum), is from the time of turning on the output sink
current to the time LOD status flag becomes valid.
MSB
LSB
0
15
16
23
24
119
120
191
LOD 15
LOD 0
TEF
X
X
DC 15.5
DC 0.0
X
X
LOD Data
TEF
DC Values
Reserved
Figure 13. Status Information Data Packet Format
MODE
XLAT
1st GS Data Input Cycle
GS Data Input Mode
2nd GS Data Input Cycle
SIN
GS1
MSB
GS1
LSB
GS2
MSB
GS2
LSB
tsuLOD
> t pd2 + t pd3
SCLK
1
192
193
1
192
SOUT
-
-
GS1
MSB
SID1
MSB
SID1
MSB-1
SID1
LSB
GS2
MSB
BLANK
(1st GS Data Output Cycle)
GSCLK
OUT0
(current)
OUT1
(current)
OUT15
(current)
XERR
tpd3
tpd2 + tpd3
1
4096
Figure 14. Readout Status Information Data (SID) Timing Chart
GRAYSCALE PWM OPERATION
The grayscale PWM cycle starts with the falling edge of BLANK. The first GSCLK pulse after BLANK goes low
increases the grayscale counter by one and switches on all OUTn with grayscale value not zero. Each following
rising edge of GSCLK increases the grayscale counter by one. The TLC5945 compares the grayscale value of
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