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FPF3042 Datasheet

Power-Source-Selector Switch

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FPF3042 pdf
Application Diagram
CIN1
CIN2
OFF ON
VIN VOUT
VIN VOUT
VIN VOUT
VOUT
VBUS
VBUS
VBUS FPF3042
EN DF_IN
VIN_ SEL
Other_VIN_ AVA
GND GND
COUT
V_I/O
Figure 1. Typical Application
EN FPF3042 VOUT
1.8V GPIO
Q1
R1
20 kΩ
R2
30 kΩ
Charger
5V charging voltage at VOUT creates 3V at EN when
Q1 gate is LOW (OFF)
Note:
Q1 gate should be HIGH (ON) when not in OTG mode.
Figure 2. Example Circuit for OTG Operation with Low-Voltage GPIO
© 2013 Fairchild Semiconductor Corporation
FPF3042 Rev. 1.0.1
2
www.fairchildsemi.com
Fairchild Semiconductor
Fairchild Semiconductor


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