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參數(shù)資料
| 型號： | STCF03 |
| 廠商： | 意法半導體 |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | High power white LED driver with I2C⑩ interface |
| 中文描述： | 大功率白光LED驅(qū)動器具有I2C⑩接口 |
| 文件頁數(shù)： | 14/35頁 |
| 文件大?。?/td> | 455K |
| 代理商： | STCF03 |
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Introduction
STCF03
14/35
7.2.4
ADD pin
With this pin it is possible to select one of the 4 possible I
2
C slave addresses. No internal
pull-up nor pull-down is provided. The pin has to be connected either GND, V
I
, SCL or SDA
to select the desired I
2
C slave address (see
Table 6.
)
7.2.5
TMSK pin
This pin can be used to implement the TX masking function. This function has effect only for
Flash current settings higher than 200 mA (bit FDIM_3=1). Under this condition, when this
pin is pulled high by the P, the current flowing in the LED is forced at 200 mA typ. No internal
pull-up nor pull-down is provided: to be externally wired to GND if TX masking function is not
used.
7.3
I
2
C BUS interface
Data transmission from the main μP STCF03 and vice versa takes place through the 2 wires
I
2
C bus interface wires, consisting of the two lines SDA and SCL (pull-up resistors to a
positive supply voltage must be externally connected). The recommended maximum voltage
of these signals should be 3.0 V.
7.4
Data validity
As shown in
Figure 4
, the data on the SDA line must be stable during the high period of the
clock. The HIGH and LOW state of the data line can only change when the clock signal on
the SCL line is LOW.
Table 7. Address table
ADD pin
A7
A6
A5
A4
A3
A2
A1
A0
GND
0
1
1
0
0
0
0
R/W
VBAT
0
1
1
0
0
0
1
R/W
SDAL
0
1
1
0
0
1
0
R/W
SCL
0
1
1
0
0
1
1
R/W
Figure 4.
Data validity on the I
2
C Bus
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| STCF03PNR | 功能描述:LED照明驅(qū)動器 Hi Pwr white LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| STCF03TBR | 功能描述:LED照明驅(qū)動器 HP white LED driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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