LTC1986 - LTC1986是3V/5V SIM Power Supply in ThinSOT

LTC1986是LINEAR凌力尔特公司的一款SIM 接口产品，LTC1986是LTC1986是3V/5V SIM Power Supply in ThinSOT，本站介绍了LTC1986的封装应用图解、特点和优点、功能等，并给出了与LTC1986相关的LINEAR元器件型号供参考。

LTC1986 - LTC1986是3V/5V SIM Power Supply in ThinSOT - SIM 接口 - 接口器件 - 凌力尔特

LTC1986 - 3V/5V SIM Power Supply in ThinSOT

LTC1986 - 3V/5V SIM Power Supply in ThinSOT - Linear Technology（凌力尔特）

功能描述

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: VOUT = 5V (5V mode), VOUT = VIN (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 VIN to drop as low as 2.6V by providing a boost feature in 3V mode. In 3V mode, VOUT is connected directly to VIN through a 2.5W switch until VIN drops below 2.85V. When VIN is below 2.85V, the part automatically boosts VOUT to maintain a regulated 2.9V output, thereby ensuring VOUT stays within the 3V SIM VCC 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.

特点

VIN Range: 2.6V to 4.4V

Ultralow PowerOperating Current: 14µAShutdown 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

VIN to VOUT Direct Connection for 3V SIMs

Switching Frequency: 900kHz

Soft-Start Limits Inrush Current at Turn-On

Output Driven to Ground During Shutdown

应用

GSM Cellular Telephones

PCS/DCS Cellular Telephones

Portable POS Terminals

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1986ES6	SOT-23	E	$1.70
LTC1986ES6#PBF	SOT-23	E	$1.70
LTC1986ES6#TR	SOT-23	E	$1.70	$1.43
LTC1986ES6#TRM	SOT-23	E	$1.70	$1.48
LTC1986ES6#TRMPBF	SOT-23	E	$1.70	$1.48
LTC1986ES6#TRPBF	SOT-23	E	$1.70	$1.43

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