Ublox SARA-R410M-02B-00 System Integration Manual

SARA-R4 series - System integration manual
UBX-16029218 - R20 Design-in Page 44 of 128
C1-Public
Figure 20 and the components listed in Table 10 show an example of a high reliability power supply
circuit for the SARA-R4 series modules that support 2G radio access technology. This circuit is also
suitable for the other SARA-R4 series modules, where the module VCC input is supplied by a step-
down switching regulator capable of delivering the highest peak / pulse current specified for the 2G
use-case, with low output ripple and with fixed switching frequency in PWM mode operation greater
than 1 MHz.
SARA-R4 series
12V
C5
R3
C4
R2
C2C1
R1
VIN
RUN
VC
RT
PG
SYNC
BD
BOOST
SW
FB
GND
6
7
10
9
5
C6
1
2
3
8
11
4
C7
C8
D1
R4
R5
L1
C3
U1
52
VCC
53
VCC
51
VCC
GND
C9 C10 C11
Figure 20: Example of high reliability VCC supply circuit for SARA-R4 series modules, using a step-down regulator
Reference
Description
Part Number - Manufacturer
C1
10 µF Capacitor Ceramic X7R 5750 15% 50 V
Generic manufacturer
C2
10 nF Capacitor Ceramic X7R 0402 10% 16 V
Generic manufacturer
C3
680 pF Capacitor Ceramic X7R 0402 10% 16 V
Generic manufacturer
C4
22 pF Capacitor Ceramic C0G 0402 5% 25 V
Generic manufacturer
C5
10 nF Capacitor Ceramic X7R 0402 10% 16 V
Generic manufacturer
C6
470 nF Capacitor Ceramic X7R 0603 10% 25 V
Generic manufacturer
C7
100 µF Capacitor Tantalum B_SIZE 20% 6.3V 15m
T520B107M006ATE015 – Kemet
C8
100 nF Capacitor Ceramic X7R 16 V
GRM155R71C104KA01 - Murata
C9
10 nF Capacitor Ceramic X7R 16 V
GRM155R71C103KA01 - Murata
C10
68 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1E680JA01 - Murata
C11
15 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1E150JA01 - Murata
D1
Schottky Diode 40 V 3 A
MBRA340T3G - ON Semiconductor
L1
10 µH Inductor 744066100 30% 3.6 A
744066100 - Wurth Electronics
R1
470 k Resistor 0402 5% 0.1 W
Generic manufacturer
R2
15 k Resistor 0402 5% 0.1 W
Generic manufacturer
R3
22 k Resistor 0402 5% 0.1 W
Generic manufacturer
R4
390 k Resistor 0402 1% 0.063 W
Generic manufacturer
R5
100 k Resistor 0402 5% 0.1 W
Generic manufacturer
U1
Step-Down Regulator MSOP10 3.5 A 2.4 MHz
LT3972IMSE#PBF - Linear Technology
Table 10: Components for high reliability VCC supply circuit for SARA-R4 series modules, using a step-down regulator
☞ See the section 2.2.1.10, and in particular Figure 31 / Table 20, for the parts recommended to be
provided if the application device integrates an internal antenna.

Ublox SARA-R410M-02B-00 Specifications

General

Brand	Ublox
Model	SARA-R410M-02B-00
Category	Control Unit
Language	English