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LTC3620 - Ultralow Power 15mA Synchronous Step-Down Switching Regulator

General Description

The LTC®3620 is a high efficiency, synchronous buck regulator, suitable for very low power, very small footprint applications powered by a single Li-Ion battery.

The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes.

Key Features

  • n High Efficiency: Up to 95% n Maximum Current Output: 15mA n Externally Programmable Frequency Clamp with Internal 50kHz Default Minimizes Audio Noise n 18μA IQ Current n 2.9V to 5.5V Input Voltage Range n Low-Battery Detection n 0.6V Reference Allows Low Output Voltages n Shutdown Mode Draws.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES n High Efficiency: Up to 95% n Maximum Current Output: 15mA n Externally Programmable Frequency Clamp with Internal 50kHz Default Minimizes Audio Noise n 18μA IQ Current n 2.9V to 5.5V Input Voltage Range n Low-Battery Detection n 0.6V Reference Allows Low Output Voltages n Shutdown Mode Draws <1μA Supply Current n 2.8V Undervoltage Lockout n Unique Low Noise Control Architecture n Internal Power MOSFETs n No Schottky Diodes Required n Internal Soft-Start n Tiny 2mm × 2mm 8-Lead DFN Package APPLICATIONS n Hearing Aids n Wireless Headsets n Li-Ion Cell Applications n Button Cell Replacement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.