CP2109 Ver la hoja de datos (PDF) - Silicon Laboratories

Número de pieza

componentes Descripción

Fabricante

CP2109

SINGLE-CHIP USB-TO-UART BRIDGE

Silicon Laboratories 

CP2102/9

CP2102

From VBUS

VBUS

REGIN

From 3 V

Power Net

1.0 F

4.7 F

0.1 F

VDD

0.1 F

VBUS Sense

5 V In

Voltage Regulator (REG0)

3 V Out

Device

Power Net

Figure 9. CP2102 Configuration 3: USB Self-Powered, Regulator Bypassed

From VBUS

24 k

Note 1

(Optional) 47 k

From 3 V

Power Net

1.0 F

4.7 F

CP2109

VBUS

REGIN

0.1 F

VDD

0.1 F

5 V In

VBUS Sense

Voltage Regulator (REG0)

3 V Out

Device

Power Net

Note 1 : For self-powered systems where VDD or REGIN may be unpowered when VBUS is

connected to 5 V, a resistor divider (or functionally-equivalent circuit) on VBUS is required

to meet the absolute maximum voltage on VBUS specification in the Electrical

Characteristics section.

Figure 10. CP2109 Configuration 3: USB Self-Powered, Regulator Bypassed

Rev. 1.8

21

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