sx8638 Semtech Corporation, sx8638 Datasheet - Page 36
sx8638
Manufacturer Part Number
sx8638
Description
Low Power, Capacitive Button And Slider Touch Controller 8 Sensors With Enhanced Led Drivers And Proximity
Manufacturer
Semtech Corporation
Datasheet
1.SX8638.pdf
(80 pages)
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SX8638
Low Power, Capacitive Button and Slider Touch Controller
(8 sensors) with Enhanced LED Drivers and Proximity
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
4.4 Power management pins
The power management pins consist of the Power, Ground and Regulator pins.
VDD
VDD is a power pin and is the main power supply for the SX8638.
VDD has protection to GROUND.
Figure 42 shows a simplified diagram of the VDD pin.
SX8638
VDD
VDD
Simplified diagram of VDD
Figure 42
GND
The SX8638 has four ground pins all named GND. These pins and the package center pad need to be connected
to ground potential.
The GND has protection to VDD.
Figure 43 shows a simplified diagram of the GND pin.
SX8638
VDD
GND
GND
Simplified diagram of GND
Figure 43
Revision 7_6, September 10
© 2010 Semtech Corp.
www.semtech.com
36
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