sx8644 Semtech Corporation, sx8644 Datasheet - Page 36

• Manufacturer Part Number: sx8644
• Description: Ultra Low Power, Capacitive Button And Slider Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

SX8644
Ultra Low Power, Capacitive Button and Slider
Touch Controller (12 sensors) with Enhanced LED Drivers
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 SX8644.
VDD has protection to GROUND.
Figure 42 shows a simplified diagram of the VDD pin.
SX8644
VDD
VDD
Simplified diagram of VDD
Figure 42
GND
The SX8644 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.
SX8644
VDD
GND
GND
Simplified diagram of GND
Figure 43
Revision 7_3, January 10
© 2009 Semtech Corp.
www.semtech.com
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