Integration Manual
Table Of Contents
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.5.1 Module supply input (VCC)
- 1.5.1.1 VCC supply requirements
- 1.5.1.2 VCC current consumption in 2G connected mode
- 1.5.1.3 VCC current consumption in 3G connected mode
- 1.5.1.4 VCC current consumption in LTE connected mode
- 1.5.1.5 VCC current consumption in cyclic low power idle mode / active mode
- 1.5.1.6 VCC current consumption in fixed active mode
- 1.5.2 Generic digital interfaces supply output (V_INT)
- 1.5.1 Module supply input (VCC)
- 1.6 System function interfaces
- 1.7 Antenna interfaces
- 1.8 SIM interfaces
- 1.9 Data communication interfaces
- 1.10 eMMC interface
- 1.11 Digital Audio interfaces
- 1.12 ADC interfaces
- 1.13 General Purpose Input/Output
- 1.14 Reserved pins (RSVD)
- 1.15 System features
- 1.15.1 Network indication
- 1.15.2 Jamming detection
- 1.15.3 IP modes of operation
- 1.15.4 Dual stack IPv4 and IPv6
- 1.15.5 Embedded TCP/IP and UDP/IP
- 1.15.6 Embedded FTP and FTPS
- 1.15.7 Embedded HTTP and HTTPS
- 1.15.8 SSL and TLS
- 1.15.9 Firmware update Over AT (FOAT)
- 1.15.10 Firmware update Over The Air (FOTA)
- 1.15.11 Power Saving
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC)
- 2.2.1.1 General guidelines for VCC supply circuit selection and design
- 2.2.1.2 Guidelines for VCC supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC supply circuit design using a LDO linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary battery
- 2.2.1.6 Additional guidelines for VCC supply circuit design
- 2.2.1.7 Guidelines for the external battery charging circuit
- 2.2.1.8 Guidelines for external charging and power path management circuit
- 2.2.1.9 Guidelines for removing VCC supply
- 2.2.1.10 Guidelines for VCC supply layout design
- 2.2.1.11 Guidelines for grounding layout design
- 2.2.2 Generic digital interfaces supply output (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interfaces
- 2.6 Data communication interfaces
- 2.7 eMMC interface
- 2.8 Digital Audio interface
- 2.9 ADC interfaces
- 2.10 General Purpose Input/Output
- 2.11 Reserved pins (RSVD)
- 2.12 Module placement
- 2.13 Module footprint and paste mask
- 2.14 Thermal guidelines
- 2.15 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- 6 FCC Notes
- Appendix
- Glossary
- Related documents
- Revision history
- Contact
TOBY-L3 series - System Integration Manual
TSD-19090601 - R13 System Integration Manual Page 70 of 143
C5 C8C7
C6 C9
GND
TOBY-L3 series
71
VCC
72
VCC
70
VCC
+
USB
Supply
C3
R4
θ
U1
IUSB
IAC
IEND
TPRG
SD
VIN
VINSNS
MODE
ISEL
C2
C1
5V0
TH
GND
VOUT
VOSNS
VREF
R1
R2
R3
Li-Ion/Li-Pol
Battery Pack
D1
B1
C4
Li-Ion/Li-Polymer
Battery Charger IC
D2
Figure 25: Li-Ion (or Li-Polymer) battery charging application circuit
Reference
Description
Part Number - Manufacturer
B1
Li-Ion (or Li-Polymer) battery pack with 470 NTC
Various manufacturer
C1, C4
1 µF Capacitor Ceramic X7R 0603 10% 16 V
GRM188R71C105KA12 - Murata
C2, C6
10 nF Capacitor Ceramic X7R 0402 10% 16 V
GRM155R71C103KA01 - Murata
C3
1 nF Capacitor Ceramic X7R 0402 10% 50 V
GRM155R71H102KA01 - Murata
C5
330 µF Capacitor Tantalum D_SIZE 6.3 V 45 m
T520D337M006ATE045 - KEMET
C7
100 nF Capacitor Ceramic X7R 0402 10% 16 V
GRM155R61A104KA01 - Murata
C8
68 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1H680JA01 - Murata
C9
15 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1H150JA01 - Murata
D1, D2
Low Capacitance ESD Protection
CG0402MLE-18G - Bourns
R1, R2
24 k Resistor 0402 5% 0.1 W
RC0402JR-0724KL - Yageo Phycomp
R3
3.3 k Resistor 0402 5% 0.1 W
RC0402JR-073K3L - Yageo Phycomp
R4
1.0 k Resistor 0402 5% 0.1 W
RC0402JR-071K0L - Yageo Phycomp
U1
Single Cell Li-Ion (or Li-Polymer) Battery Charger IC
L6924U - STMicroelectronics
Table 21: Suggested components for Li-Ion (or Li-Polymer) battery charging application circuit
2.2.1.8 Guidelines for external charging and power path management circuit
Application devices where both a permanent primary supply / charging source (e.g. ~12 V) and a
rechargeable back-up battery (e.g. 3.7 V Li-Pol) are available at the same time as possible supply source
should implement a suitable charger / regulator with integrated power path management function to supply
the module and the whole device while simultaneously and independently charging the battery.
Figure 26 reports a simplified block diagram circuit showing the working principle of a charger / regulator
with an integrated power path management function. This component allows the system to be powered by
a permanent primary supply source (e.g. ~12 V) using the integrated regulator which simultaneously and
independently recharges the battery (e.g. 3.7 V Li-Pol) that represents the back-up supply source of the
system: the power path management feature permits the battery to supplement the system current
requirements when the primary supply source is not available or cannot deliver the peak system current.