(Hong Kong)
Product Summary
The LTC1555CGN#TR is a SIM Power Supply and Level Translator. The LTC1555CGN#TR provide power conversion and level shifting needed for 3V GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs). The part contains a charge pump DC/DC converter that delivers a regulated 5V to the SIM card. Input voltage may range from 2.7V to 10V, allowing direct connection to the battery. Output voltage may be programmed to 3V, 5V or direct connection to the VIN pin. The applications of the LTC1555CGN#TR include SIM Interface in GSM Cellular Telephones, Smart Card Readers.
Parametrics
LTC1555CGN#TR absolute maximum ratings: (1)VIN, DVCC to GND: -0.3V to 12V; (2)VCC to GND: -0.3V to 12V; (3)Digital Inputs to GND: -0.3V to 12V; (4)LDO, CLK, RST, I/O to GND: -0.3V to (VCC + 0.3V); (5)VCC, LDO Short-Circuit Duration: -Indefinite; (6)Storage Temperature Range: -65℃ to 150℃; (7)Temperature Range: 0℃ to 70℃; (8)Extended Commercial Operating Temperature Range: -40℃ to 85℃; (9)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LTC1555CGN#TR features: (1)Step-Up/Step-Down Charge Pump Generates 5V; (2)Input Voltage Range: 2.7V to 10V; (3)Output Current: 10mA (VIN 3 2.7V); 20mA (VIN 3 3V); (4)3V to 5V Signal Level Translators; (5)>10kV ESD on All SIM Contact Pins; (6)Short-Circuit and Overtemperature Protected; (7)Very Low Operating Current: 60mA; (8)Very Low Shutdown Current: < 1mA; (9)Soft Start Limits Inrush Current at Turn-On; (10)Programmable 3V or 5V Output Voltage; (11)650kHz Switching Frequency; (12)Auxiliary 4.3V LDO/Power Switch (LTC1556 Only); (13)Available in a 16- and 20-Pin Narrow SSOP.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LTC1555CGN#TR |
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IC LEVEL XLATOR/SIM PS 16SSOP |
Data Sheet |
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LTC1555CGN#TRPBF |
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IC LEVEL TRANSLATOR 16-SSOP |
Data Sheet |
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