Ublox SARA-R4 Series System Integration Manual

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R11 Design-in Page 61 of 157
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
9.1 k Resistor 0402 5% 0.1 W
Generic manufacturer
R2
3.9 k Resistor 0402 5% 0.1 W
Generic manufacturer
U1
LDO Linear Regulator ADJ 3.0 A
LT1764AEQ#PBF - Linear Technology
Table 12: Suggested components for high reliability VCC circuit for SARA-R4/N4 series modules, using an LDO 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 20 and the components listed in Table 13 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, where the module 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 k Resistor 0.1 W
Generic manufacturer
R2
41 k Resistor 0.1 W
Generic manufacturer
R3
10 k Resistor 0.1 W
Generic manufacturer

Ublox SARA-R4 Series Specifications

General

Brand	Ublox
Model	SARA-R4 Series
Category	Control Unit
Language	English