Datasheet Analog Devices LTC3520IUF#PBF — 数据表

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. 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 …