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LTC1986 - 3V/5V SIM Power Supply

Features

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Full PDF Text Transcription

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LTC1986 3V/5V SIM Power Supply in SOT-23 FEATURES s s s s s DESCRIPTIO s s s s s s s VIN Range: 2.6V to 4.4V Step-Up Charge Pump Generates 5V Output Current: 10mA VIN to VOUT Direct Connection for 3V SIMs Ultralow Power Operating Current: 14µA Shutdown Current: <1µA No Inductors Short-Circuit/Thermal Protected Switching Frequency: 900kHz Soft-Start Limits Inrush Current at Turn-On Output Driven to Ground During Shutdown Ultrasmall Application Circuit (< 0.045in2) 6-Lead SOT-23 Package The LTC®1986 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.
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