LTC1555L-1.8

PRODUCTION

SIM Power Supply and Level Translator

Part Models: 2
1ku List Price: Starting From $2.78

Viewing:

Overview

Buck/Boost Charge Pump Generates 1.8V, 3V or 5V
Input Voltage Range: 2.6V to 6V
Controller V_CC Range: 1.425V to 4.4V
>10kV ESD on All SIM Contact Pins
Short-Circuit and Overtemperature Protected
Meets all ETSI and IMT-2000 SIM Interface Requirements
1.8V to 5V Signal Level Translators
Very Low Operating Current: 32µA
Very Low Shutdown Current: <1µA
Soft-Start Limits Inrush Current at Turn-On
1MHz Switching Frequency
Available in 16-Pin Narrow SSOP Package

The LTC1555L-1.8 provides power conversion and level shifting needed for low voltage GSM and WCDMA cellular telephones to interface with either 1.8V, 3V or 5V subscriber identity modules (SIMs). The part contains a patented buck/boost charge pump DC/DC converter* that delivers a regulated V_CC supply 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 1.8V, 3V, 5V or direct connection to the V_IN pin.

Internal level translators allow controllers operating with supplies as low as 1.425V to interface with 1.8V, 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 32µA 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.

Applications

SIM Interface in GSM Cellular Telephones
WCDMA SIM Interface
Smart Card Readers

Part Models: 2
1ku List Price: Starting From $2.78

Documentation

Data Sheet 1

LTC1555L-1.8: SIM Power Supply and Level Translator Data Sheet 08/28/2007

Reliability Data 1

R369 Reliability Data 03/23/2018

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC1555LEGN-1.8#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1555LEGN-1.8#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC1555LEGN-1.8#PBF	PRODUCTION
LTC1555LEGN-1.8#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package
		PCN22_0235_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1555LEGN-1.8#PBF	PRODUCTION
LTC1555LEGN-1.8#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
		PCN22_0066_Form Material_Report Delta Qualification Matrix
LTC1555LEGN-1.8#PBF	PRODUCTION
LTC1555LEGN-1.8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Latest Discussions

No discussions on LTC1555L-1.8 yet. Have something to say?

Start a Discussion on EngineerZone®