UCS1903 查看數據表（PDF） - Unspecified
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UCS1903 Datasheet PDF : 9 Pages
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UCS1903
The power supply voltage for the UCS1903 may be selected from 6V to 12V. A 104 capacitor
between the power supply and the ground should be connected as close to the UCS1903
package as possible, and the PCB traces should be as short as possible. A resistor R should be
connected between the power supply and the VDD pin, with the resistance value determined in
reference to the supply voltage. The recommended resistance value is as follows:
Supply Voltage
6V
9V
12V
Recommended power supply resistor value
1kΩ
4kΩ
7kΩ
In practical applications, the VDD voltage is constant at about 5V. When the SET pin is
connected to high level, it should be connected to VDD. It should not be connected to external
Power supply VCC, so as to prevent chip breakdown.
V. 1.0
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