LTC3520EUF#PBF

LTC3520 Synchronous 1A Buck-Boost and 600mA Buck Converters FEATURES DESCRIPTION n The LTC®3520 combines 1A buck-boost and 600mA synchronous buck DC/DC converters in a tiny 4mm × 4mm package. A programmable switching frequency allows the efficiency to be optimized while minimizing the solution footprint. Both converters feature soft-start and current limit protection. The uncommitted gain block can be configured as an LDO or utilized as a battery-good comparator. n n n n n n n n Dual High Efficiency DC/DC Converters: Buck-Boost (VOUT: 2.2V to 5.25V, IOUT = 1A at VOUT = 3.3V, VIN ≥ 3V) Buck (VOUT: 0.8V to VIN , IOUT = 600mA) 2.2V to 5.5V Input Voltage Range Pin-Selectable Burst Mode® Operation Uncommitted Gain Block for LDO Controller, Battery Good Indication or Sequencing Programmable 100kHz to 2MHz Switching Frequency 55μA Total Quiescent Current for Both Converters in Burst Mode Operation Thermal and Overcurrent Protection