IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2013.
2.3 Power supply connections
The PCB has an optically isolated solid state relay (default a do-not-place
component) to offer synchronized switching of the device power with low voltage
drop-out and relatively high current drive possibilities. It is recommended to place a
0R resistor at R10 when currents larger than 100mA are expected. The
synchronized supply switching functionality will be lost by placing R10.
There are various ways of powering the PCB:
Wires soldered in at “V+” and “GND” (3.3V to 6.6V)
Through-hole coin cell holder at “V+” and “GND” (3.3V to 6.6V)
Power from DUT side –P4:pin2 (VDDHI_ISO, 3.0V to 5.5V)
The 3V3 regulator may be used to regulate the supply. Depending on the current
consumption, V_EXT should be chosen to comply with this LDO regulator.
Maximum dropout expected is 0.6V.
When powering the PCB, be sure to operate the chosen Azoteq IC within the
recommended limits. Some ICs are designed to operate in the 3.0V to 5.5V range
while others are designed for the 1.8V to 3.3V range.
The following patents relate to the device or usage of the device: US 6,249,089 B1, US 6,621,225 B2, US 6,650,066 B2, US 6,952,084
B2, US 6,984,900 B1, US 7,084,526 B2, US 7,084,531 B2, US 7,119,459 B2, US 7,265,494 B2, US 7,291,940 B2, US 7,329,970 B2,
US 7,336,037 B2, US 7,443,101 B2, US 7,466,040 B2, US 7,498,749 B2, US 7,528,508 B2, US 7,755,219 B2, US7,772,781, US
7,781,980 B2, EP 1 120 018 B1, EP 1 206 168 B1, EP 1 308 913 B1, EP 1 530 178 B1, ZL 99 8 14357.X, AUS 761094
IQ Switch®, ProxSense®, AirButton® and the IQ Logo are trademarks of Azoteq.
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