Similar devices:
GT06-V01
For speaker / siren output
http://www.xlsemi.com/datasheet/XL1509%20datasheet.pdf Producing 5V output
4.2 constant voltage during charging (with module switched off)
http://www.microchip.com/wwwproducts/en/PIC12F629
https://labs.mediatek.com/fileMedia/download/4c04f268-9f17-4525-954c-d1ae6fdc2f57
VC52780 1552 A5M007
Mediatek MT6260DA 1319-AMAH
GSM/GPRS/EDGE-RX SOC Processor
MT6260 is a monolithic chip integrating leading edge power management unit, analog baseband and radio circuitry based on the low-power CMOS process.
MT6260 is a feature-rich and extremely powerful single-chip solution for high-end GSM/GPRS and EDGE-Rx capability. Based on the 32-bit ARM7EJ-S TM RISC processor, MT6260’ s superb processing power, along with high bandwidth architecture and dedicated hardware support, provides a platform for high-performance GPRS/EDGE-Rx Class 12 MODEM application and leading-edge multimedia applications.