LTC1986

PRODUCTION

3V/5V SIM Power Supply in ThinSOT

Data Sheet Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.09

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Overview

V_IN Range: 2.6V to 4.4V
Ultralow Power

Operating Current: 14µA
Shutdown Current: <1µA

No Inductors
Short-Circuit/Thermal Protected
Ultrasmall Application Circuit (<0.045in² )
Low Profile (1mm) ThinSOT^™
Step-Up Charge Pump Generates 5V
Output Current: 10mA
V_IN to V_OUT Direct Connection for 3V SIMs
Switching Frequency: 900kHz
Soft-Start Limits Inrush Current at Turn-On
Output Driven to Ground During Shutdown

The LTC1986 is a micropower charge pump DC/DC converter that provides power for either 3V or 5V GSM SIM cards. It operates in one of three modes: V_OUT = 5V (5V mode), V_OUT = V_IN (3V mode) or shutdown. The input voltage range is 2.6V to 4.4V and the part can provide 10mA of output current. The LTC1986 allows V_IN to drop as low as 2.6V by providing a boost feature in 3V mode. In 3V mode, V_OUT is connected directly to V_IN through a 2.5Ω switch until V_IN drops below 2.85V. When V_IN is below 2.85V, the part automatically boosts V_OUT to maintain a regulated 2.9V output, thereby ensuring V_OUT stays within the 3V SIM V_CC specification.

Extremely low operating current (14µA typical with no load) and low external parts count make the part ideally suited for small, light load battery-powered applications. The total PCB area of the application circuit shown below is less than 0.045in². Protection features include inrush current limiting, undervoltage lockout, short circuit and thermal overload protection. The LTC1986 is available in a low profile (1mm) SOT-23 package.

Applications

GSM Cellular Telephones
PCS/DCS Cellular Telephones
Portable POS Terminals

Part Models: 2
1ku List Price: Starting From $2.09

Documentation

Data Sheet 1

LTC1986: 3V/5V SIM Power Supply in ThinSOT Data Sheet 08/30/2007

Reliability Data 1

R402 Reliability Data 03/27/2018

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
LTC1986ES6#TRMPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1986ES6#TRPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Level Translators & Buffers 1
LTC4555	PRODUCTION	SIM Power Supply and Level Translator

Parts	Product Life Cycle	Description
LTC1555	PRODUCTION	SIM Power Supply and Level Translator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC1986

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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