Ublox SARA-R5 Series - Page 43

SARA-R5 series - System integration manual
UBX-19041356 - R04 Design-in Page 43 of 118
C1-Public
SARA-R5 series
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 22: Example of VCC supply circuit for SARA-R5 series modules, using a step-down regulator
Reference
Description
Part number - Manufacturer
C1
10 F capacitor ceramic X7R 50 V
Generic manufacturer
C2
10 nF capacitor ceramic X7R 16 V
Generic manufacturer
C3
22 nF capacitor ceramic X7R 16 V
Generic manufacturer
C4
22 F capacitor ceramic X5R 25 V
Generic manufacturer
C5
22 F capacitor ceramic X5R 25 V
Generic manufacturer
C6
100 nF capacitor ceramic X7R 16 V
GCM155R71C104KA55 - Murata
C7
10 nF capacitor ceramic X7R 16 V
GRT155R71C103KE01 - Murata
C8
68 pF capacitor ceramic C0G 0402 5% 50 V
GRM1555C1E680JA01 - Murata
C9
15 pF capacitor ceramic C0G 0402 5% 50 V
GJM1555C1H150JB01 - Murata
D1
Schottky diode 30 V 2 A
MBR230LSFT1G - ON Semiconductor
L1
4.7 H inductor 20% 2 A
SLF7045T-4R7M2R0-PF - TDK
R1
470 k resistor 0.1 W
Generic manufacturer
R2
150 k resistor 0.1 W
Generic manufacturer
U1
Step-down regulator 1 A 1 MHz
TS30041 - Semtech
Table 10: Components for the VCC supply circuit for SARA-R5 series modules, using a step-down regulator
☞ See the section 2.2.1.9, and in particular Figure 28 / Table 15, for the parts recommended to be
provided if the application device integrates an internal antenna.