LTC1555IGN#TRPBF

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Analog Devices Inc./Maxim Integrated

SIM POWER SUPPLY AND LEVEL TRANSLATOR

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LTC1555IGN#TRPBF

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Analog Devices Inc./Maxim Integrated

SIM POWER SUPPLY AND LEVEL TRANSLATOR

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC1555 Series

The LTC1555L provides power conversion and level shifting needed for low voltage GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs). The part contains a patented buck/boost charge pump DC/DC converter* that delivers a regulated VCCsupply voltage to the SIM card. Input voltage may range from 2.6V to 6V allowing direct connection to the battery. The output voltage may be programmed to 3V, 5V or direct connection to the VINpin.Internal level translators allow controllers operating with supplies as low as 1.425V to interface with 3V and 5V SIMs. A soft-start feature limits inrush current at turn-on, mitigating start-up problems that may result when the input is supplied by another low-power DC/DC converter. Battery life is maximized by 40µA operating current, and 1µA shutdown current. Board area is minimized by the miniature 16-pin narrow SSOP packages and the need for only three small external capacitors.ApplicationsSIM Interface in GSM Cellular TelephonesSmart Card Readers

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1555IGN#TRPBF

Channel Type	Bidirectional
Channels per Circuit	1
Features	Thermal-Shutdown Protection, SIM Card Interface
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Type	Open Drain
Package Length	0.154 in
Package Name	16-SSOP
Package Width	3.9 mm
Translator Type	Voltage Level
Voltage - VCCA (Max)	5.5 V
Voltage - VCCA (Min)	1.8 V
Voltage - VCCB (Max)	10 V
Voltage - VCCB (Min)	2.7 V

LTC1555 Series

SIM Power Supply and Level Translator

Part	Operating Temperature (Max)	Operating Temperature (Min)	Channel Type	Voltage - VCCA (Min)	Voltage - VCCA (Max)	Channels per Circuit	Translator Type	Mounting Type	Package Name	Features	Number of Circuits	Package Width	Package Length	Output Type	Voltage - VCCB (Min)	Voltage - VCCB (Max)
Analog Devices Inc./Maxim Integrated LTC1555IGN#TRPBF	85 °C	-40 °C	Bidirectional	1.8 V	5.5 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.7 V	10 V
Analog Devices Inc./Maxim Integrated LTC1555CGN#TRPBF	70 °C	0 °C	Bidirectional	1.8 V	5.5 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.7 V	10 V
Analog Devices Inc./Maxim Integrated LTC1555CGN#PBF	70 °C	0 °C	Bidirectional	1.8 V	5.5 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.7 V	10 V
Analog Devices Inc./Maxim Integrated LTC1555LEGN#PBF	85 °C	-40 °C	Bidirectional	1.425 V	4.4 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.6 V	6 V
Analog Devices Inc./Maxim Integrated LTC1555LEGN#PBF	85 °C	-40 °C	Bidirectional	1.425 V	4.4 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.6 V	6 V
Analog Devices Inc./Maxim Integrated LTC1555LEGN#TRPBF	85 °C	-40 °C	Bidirectional	1.425 V	4.4 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.6 V	6 V
Analog Devices Inc./Maxim Integrated LTC1555IGN	85 °C	-40 °C	Bidirectional	1.8 V	5.5 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.7 V	10 V
Analog Devices Inc./Maxim Integrated LTC1555IGN#PBF	85 °C	-40 °C	Bidirectional	1.8 V	5.5 V	1	Voltage Level	Surface Mount	16-SSOP	SIM Card Interface Thermal-Shutdown Protection	1	3.9 mm	0.154 in	Open Drain	2.7 V	10 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC1555IGN#TRPBF | Datasheet

R369 Reliability Data