The LTC3620 chip manufactured by Linear technology is a high efficiency synchronous buck regulator designed for very low power applications .
The LTC3620 buck regulator is internally programmed to provide a 1.1V output.
The LTC3620 uses a unique variable frequency architecture to minimize power loss .
The switching frequency of the LTC3620 is proportional to the load current .
The LTC3620 synchronous buck regulator can be used in electronics applications like : Wireless Headsets , Li-Ion Cell Applications , Button Cell Replacement .
The LTC3620 has a high efficiency up to 95% and a maximum output current of a 15mA .
The input voltage range for the LTC3620 is from 2.9V to 5.5V .
Other main features of the LTC3620 high efficiency synchronous buck regulator are : Externally Programmable Frequency Clamp with Internal 50kHz Default Minimizes Audio Noise , 18μA IQ Current , Low-Battery Detection , 0.6V Reference Allows Low Output Voltages , Shutdown Mode Draws <1μA Supply Current , 2.8V Undervoltage Lockout , Unique Low Noise Control Architecture , Internal Power MOSFETs , No Schottky Diodes Required .