Integration Manual

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R13 Design-in Page 45 of 119
VCC is supplied by an LDO linear regulator capable of delivering maximum peak / pulse current specified for LTE use-case,
with suitable power handling capability.
It is recommended to configure the LDO linear regulator to generate a voltage supply value slightly below the maximum
limit of the module VCC normal operating range (e.g. ~4.1 V for the VCC, as in the circuits described in Figure 20 and Table
13). This reduces the power on the linear regulator and improves the thermal design of the circuit.
5V
C1
R1
IN OUT
ADJ
GND
5
8 1
3
4
C2
R2
R3
U1
EN
SARA-R404M
SARA-R410M
SARA-N410
52
VCC
53
VCC
51
VCC
GND
C4
C3
C5 C6
Figure 20: Example of high reliability VCC supply circuit for SARA-R404M /-R410M /-N410, using an LDO linear regulator
Reference Description Part Number - Manufacturer
C1 1 µF Capacitor Ceramic X5R 6.3 V Generic manufacturer
C2 22 µF Capacitor Ceramic X5R 25 V Generic manufacturer
C3 100 nF Capacitor Ceramic X7R 16 V GRM155R71C104KA01 - Murata
C4 10 nF Capacitor Ceramic X7R 16 V GRM155R71C103KA01 - Murata
C5 68 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1E680JA01 - Murata
C6 15 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1E150JA01 - Murata
R1
47 kΩ Resistor 0.1 W
Generic manufacturer
R2
41 kΩ Resistor 0.1 W
Generic manufacturer
R3
10 kΩ Resistor 0.1 W
Generic manufacturer
U1 LDO Linear Regulator 1.0 A AP7361 – Diodes Incorporated
Table 13: Components for high reliability VCC supply circuit for SARA-R404M /-R410M /-N410, using an LDO linear regulator
☞
☞☞
☞ See the section 2.2.1.10, and in particular Figure 27 / Table 19, for the parts recommended to be provided if the
application device integrates an internal antenna.