User Manual
Table Of Contents
- 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 / Preliminary
s
XT55/56_hd_v02.96 Page 43 of 125 18.08.2005
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 - -