SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R11 Design-in Page 56 of 157
10 nF Capacitor Ceramic X7R 0402 10% 16 V
470 nF Capacitor Ceramic X7R 0603 10% 25 V
100 µF Capacitor Tantalum B_SIZE 20% 6.3V 15m
T520B107M006ATE015 – Kemet
100 nF Capacitor Ceramic X7R 16 V
GRM155R71C104KA01 - Murata
10 nF Capacitor Ceramic X7R 16 V
GRM155R71C103KA01 - Murata
68 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1E680JA01 - Murata
15 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1E150JA01 - Murata
MBRA340T3G - ON Semiconductor
10 µH Inductor 744066100 30% 3.6 A
744066100 - Wurth Electronics
470 k Resistor 0402 5% 0.1 W
15 k Resistor 0402 5% 0.1 W
22 k Resistor 0402 5% 0.1 W
390 k Resistor 0402 1% 0.063 W
100 k Resistor 0402 5% 0.1 W
Step-Down Regulator MSOP10 3.5 A 2.4 MHz
LT3972IMSE#PBF - Linear Technology
Table 9: Components for high reliability VCC supply circuit for SARA-R4/N4 series modules, using a step-down 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.
Figure 17 and the components listed in Table 10 show an example of a high reliability power supply circuit
for SARA-R404M, SARA-R410M and SARA-N410 modules, which do not support the 2G radio access
technology. In this example, the module VCC is supplied by a step-down switching regulator capable of
delivering the maximum peak / pulse current specified for the LTE use-case, with low output ripple and
with fixed switching frequency in PWM mode operation greater than 1 MHz.
SARA-R404M
SARA-R410M
SARA-N410
12V
C2C1
VCC
EN
PG
VSW
GND
8
9
1
4
2
D1
L1
U1
BST
FB
5
R1
R2
52
VCC
53
VCC
51
VCC
GND
3V8
C6 C7 C8
PGND
C4
C3
C5
11
10
C9
Figure 17: Example of high reliability VCC supply circuit for SARA-R404M /-R410M /-N410, using a step-down regulator
Part Number - Manufacturer
10 µF Capacitor Ceramic X7R 50 V
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