User Guide
32 of 56
002-32436 Rev. *B
<2021-06>
CY8CKIT-041S-
MAX PSoC™ 4100S Max pioneer kit guide
Hardware
3.2.4.1
Voltage regulators
The different output voltages required are 5 V or 3.3 V for PSoC
™
4100S Max MCU, user LEDs, thermistor, and
expansion header and 5 V for KitProg3 (PSoC
™
5LP), power LED, and regulator. The onboard voltage regulator
is designed to generate 3.3 V, required for onboard peripherals, when powered through the KitProg3 USB
Micro-B connector or VIN; while 5 V is driven directly from the KitProg3 USB Micro-B connector. Suggested
output current for the 3.3 V regulator is 1.5 A while powered from VIN. Current sourced from USB depends on
the generation of the USB port to which the board is plugged into; as a rule of thumb USB 2.0 can source
500 mA, while USB 3.0 can source 900 mA.
Figure 21
Schematics of voltage regulator
3.2.4.2
Voltage selection
A voltage selection jumper is used to select the power for the target device with two voltage levels, 5 V direct or
3.3 V from the regulator. By default, the power for target device is set to 5 V.
Figure 22
Schematics of voltage selection jumper
U3
IFX1963TEVATMA1
GND
H
IN
2
ADJ
5
OUT
4
EN
1
NC
3
R39
8.66K
1%
R37
15K
1%
C33
0.1uF
16V
C34
10uF
25V
3.3V 1A
VCC_IN
Target Voltage Regulator
VOUT_3V3
C32
10uF
25V
C35
0.1uF
16V
TP6
RED
DNI
R38
0 OHM
3.3V
VCC_5V
1
Note: Default Jumper setting is set to 5V.
Do not remove jumper w hen pow ered.
5V
3
VCC_3V3
VTARG Voltage
Selection Header
HDR 3
J10
1
2
3
1
VTARG
2
3
2
