LTC1555 Linear Technology, LTC1555 Datasheet
LTC1555
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LTC1555 Summary of contents
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... CIN CLK 2 15 RIN RST 3 14 DATA I DDRV 0 – GND LTC1555/LTC1556 SIM Power Supply and Level Translator U SIM CLK RST I 10mA VCC 10 F GND 1555/56 TA01 pin ...
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... CC V Output Voltage Output Ripple RATINGS Temperature Range LTC1555C/LTC1556C .............................. LTC1555I/LTC1556I ........................... – 0.3V) Extended Commercial Operating Temperature Range CC (Note 2) ............................................. – Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER CIN 1 RIN 2 LTC1555CGN ...
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... OUT VCC = 5V OUT over the – temperature range by design or correlation, but are not production tested. Note 3: The DATA and I/O pull-down drivers must also sink current sourced by the internal pull-up resistors. LTC1555/LTC1556 MIN TYP MAX UNITS 12 4.00 4.3 4.55 ...
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... LTC1555/LTC1556 W U TYPICAL PERFORMANCE CHARACTERISTICS Operating Current vs Input Voltage 120 NO EXTERNAL LOAD 100 – INPUT VOLTAGE (V) IN 1555/56 G01 V Output Voltage CC vs Input Voltage (3V Mode) 3 10mA VCC 3.1 OUT 3.0 2.9 2.8 2 ...
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... SIM RST contact. CLK (Pins 16/20): Level Shifted Clock Output Pin. Should be connected to the SIM CLK contact. Careful trace routing is recommended due to fast rise and fall edge speeds LTC1555/LTC1556 /Controller GND. Proper grounding IN pin. IN Output. This pin should CC contact. The V ...
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... DIAGRAM V BATT + CONTROLLER OPTIONAL LTC1555/LTC1556 LTC1556 ONLY 6 ground, the regulator acts switch between V and LDO. LDO (Pin 17): LDO Output Pin. This pin should be tied to the FB pin for 4.3V LDO operation. The 4.3V LDO output is usable only when V available when V used power switch if the FB pin is grounded or left floating ...
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... SIM and the controller. V Voltage Regulator CC The regulator section of the LTC1555/LTC1556 (refer to the Block Diagram) consists of a step-up/step-down charge pump DC/DC converter. The charge pump can operate over a wide input voltage range (2.7V to 10V) while maintaining a regulated V output ...
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... Consult factory for valid date code starting point for shutting down the DV Level Translators All SIMs and smart cards contain a clock input, reset input SIM V and a bidirectional data input/output. The LTC1555 CERAMIC LTC1556 provide level translators to allow controllers to communicate with the SIM (see Figures 3a and 3b). The ...
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... ESD. In order to ensure proper ESD protection, careful board layout is required. The GND pins should be tied directly to a GND plane. The V located very close to the V the GND plane. LTC1555/LTC1556 . If the FB pin is left floating or is tied to GND 3V. CC ...
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... LTC1555/LTC1556 PACKAGE DESCRIPTION 0.007 – 0.0098 (0.178 – 0.249) 0.016 – 0.050 (0.406 – 1.270) * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE ...
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... TYP 0.008 – 0.012 (0.203 – 0.305) LTC1555/LTC1556 0.337 – 0.344* (8.560 – 8.737 0.150 – 0.157** (3.810 – 3.988 0.004 – ...
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... LTC1555/LTC1556 U TYPICAL APPLICATION 3V GSM CONTROLLER RELATED PARTS PART NUMBER DESCRIPTION LTC1514-3.3/LTC1514-5 Regulated Step-Up/Step-Down Charge Pumps with Low Bat Comparator 3.3V and 5V Output Versions LTC1515 Series Regulated Step-Up/Step-Down Charge Pumps with Reset Output LTC1516 Micropower, Regulated 5V Charge Pump DC/DC Converter ...