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LTC1556 - 典型应用图例:
LTC1556典型应用图例一
LTC1556 - 封装图解:
LTC1556封装图解一
LTC1556封装图解二
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Linear产品 - LTC1556介绍
LTC1556 - LTC1556是SIM Power Supplyand Level Translator

LTC1556是Linear公司的一款SIM 接口产品,LTC1556是SIM Power Supplyand Level Translator,本站介绍了LTC1556的封装应用图解、特点和优点、功能等,并给出了与LTC1556相关的凌力尔特元器件型号供参考。

LTC1556 - SIM Power Supplyand Level Translator

LTC1556 - SIM Power Supplyand Level Translator - Linear Technology(凌力尔特)

功能描述
The LTC1555/LTC1556 provide power conversion and level shifting needed for 3V GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs). These parts contain a charge pump DC/DC converter that delivers a regulated 5V to the SIM card. Input voltage may range from 2.7V to 10V, allowing direct connection to the battery. Output voltage may be programmed to 3V, 5V or direct connection to the VIN pin.

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. The LTC1556 also includes an auxiliary LDO regulator/power switch that may be used to power the frequency synthesizer or other low power circuitry.

Battery life is maximized by 60µA operating current and 1µA shutdown current. Board area is minimized by miniature 16- and 20-pin narrow SSOP packages and the need for only three small external capacitors.

特点
  • Step-Up/Step-Down Charge Pump Generates 5V
  • Input Voltage Range: 2.7V to 10V
  • Output Current: 10mA (VIN >/= 2.7V) 20mA (VIN >/=3V)
  • 3V to 5V Signal Level Translators
  • >10kV ESD on All SIM Contact Pins
  • Short-Circuit and Overtemperature Protected
  • Very Low Operating Current: 60µA
  • Very Low Shutdown Current: <1µA
  • Soft Start Limits Inrush Current at Turn-On
  • Programmable 3V or 5V Output Voltage
  • 650kHz Switching Frequency
  • Auxiliary 4.3V LDO/Power Switch (LTC1556 Only)
  • Available in a 16- and 20-Pin Narrow SSOP
  • 应用
  • SIM Interface in GSM Cellular Telephones
  • Smart Card Readers
  • 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)
    LTC1556CGN SSOP-20 C $4.15 $3.35
    LTC1556CGN#PBF SSOP-20 C $4.15 $3.35
    LTC1556CGN#TR SSOP-20 C $3.45
    LTC1556CGN#TRPBF SSOP-20 C $3.45
    LTC1556IGN SSOP-20 I $5.15 $4.05
    LTC1556IGN#PBF SSOP-20 I $5.15 $4.05
    LTC1556IGN#TR SSOP-20 I $4.15
    LTC1556IGN#TRPBF SSOP-20 I $4.15
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