User's Manual
Table Of Contents
- Contents
- Figures
- Tables
- Document history
- Introduction
- Product concept
- GSM application interface
- GSM/GPRS operating modes
- Power supply
- Power up / down scenarios
- Automatic GPRS Multislot Class change
- Charging control of the GSM part
- Power saving
- Summary of state transitions (except SLEEP mode)
- RTC backup for GSM part of XT55/56
- Serial interfaces of the XT55/56 GSM part
- Audio interfaces
- SIM interface
- Control signals
- GPS application interface
- GSM and GPS antenna interfaces
- Electrical, reliability and radio characteristics
- Mechanics
- Reference approval
- Example applications
- List of parts and accessories
XT55/56 Hardware Interface Description
Confidential / Released
s
XT55/56_hd_v02.06a Page 42 of 125 17.12.2004
Table 7: Bill of material for external charging circuit
Part Description First supplier Second supplier
SI3441DV
p-chan 2.5V (G-S) MOSFET
(TSOP-6)
VISHAY: SI3441DV-T1 NEC: UPA1911TE-T1
1SS355 100mA Si-diode (UMD2) ROHM: 1SS355TE-18 Toshiba: 1SS352TPH3
CRS04 1A Schottky diode Toshiba: CRS04 -
4V3
250mW; 200mA;
4.3V Z-Diode (SOD323)
Philips: PDZ4.3B
ROHM: UDZS4.3B
UDZ4.3B
ESDA6V1-5W6
ESD protection TRANSIL™
array
STM: ESDA6V1-5W6 -
470R, 3k3, 10k Resistor, e.g. 0805 or 0603 - -
100nF Ceramic capacitor 50V - -
PCB spark gap 0.2mm spark gap on PCB - -