带辅助电源的 LTC1556IGN SIM 接口的典型应用电路。 LTC1556 提供 3V
GSM 蜂窝电话与 3V 或 5V 用户识别模块 (SIM) 接口所需的电源转换和
电平转换。这些部件包含一个
电荷泵 DC/DC 转换器，可为 SIM 卡提供稳定的 5V 电压。输入电压范围为 2.7V 至 10V，允许直接连接到电池。输出电压可设置为 3V、5V 或直接连接到 VIN 引脚
说明
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Typical Application Circuit for LTC1556IGN SIM Interface with Auxiliary Power. The LTC1556 provides 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
主要特色
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Conversion Type
DC to DC
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Input Voltage
2.7 to 10 V
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Output Voltage
3|5 V
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