sx8643 Semtech Corporation, sx8643 Datasheet - Page 34

• Manufacturer Part Number: sx8643
• Description: Ultra Low Power, Capacitive Button Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
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 SX8643.
VDD has protection to GROUND.
Figure 37 shows a simplified diagram of the VDD pin.
GND
The SX8643 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 38 shows a simplified diagram of the GND pin.
Revision 7_5, February 10
Figure 38
Figure 37
VDD
GND
© 2010 Semtech Corp.
Simplified diagram of GND
Simplified diagram of VDD
Ultra Low Power, Capacitive Button Touch Controller
SX8643
SX8643
34
VDD
VDD
(12 sensors) with Enhanced LED Drivers
GND
DATASHEET
www.semtech.com
SX8643