LTC3520
Overview
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.
- 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
- <1μA Quiescent Current in Shutdown
- 24-Lead 4mm × 4mm QFN Package
