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參數(shù)資料
| 型號(hào)： | TB62705CPG |
| 廠商： | Marktech Optoelectronics |
| 英文描述： | 8-BIT SHIFT REGISTER, LATCHES & CONSTANT-CURRENT DRIVERS |
| 中文描述： | 8位的移位寄存器，鎖存 |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 1003K |
| 代理商： | TB62705CPG |
TB62705CPG/CFG/CFNG
2005-10-06
11
[1] Output current (I
OUT
)
I
OUT
is set by the external resistor (R
EXT), as shown in Fig. 1.
[2] Total supply voltage (VLED)
This device can operate on 0.4~0.7 V (V
O
).
When a higher voltage is input to the device, the excess voltage is consumed inside the device, which leads to
power dissipation. To minimize power dissipation and loss, we recommend that the total supply voltage be set
as follows:
V
LED
(total supply voltage) = V
CE
(T
r
V
sat
) + V
f
(LED forward voltage) + V
O
(I
C
supply voltage).
When the total supply is too high in the light of the power dissipation of this device, an additional resistor (R)
can be used to decrease the supply voltage (V
O
).
PATTERN LAYOUT
[3] Pattern layout
This device has only one ground pin, i.e., the combined signal ground pin and power ground pin.
If the ground pattern layout contains a large amount of inductance and impedance, and the voltage between
the ground and LATCH or CLOCK terminals exceeds 2.5 V due to switching noise, the device may not operate
correctly. Be sure to pay attention to pattern layout to minimize inductance.
OUTn
OUTn
OUTn
OUTn
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