SpecificationsVIN Range: 2.3V to 5.5VTwo OutputsVOUT_BUCK = 1.8VVOUT_LDO = 1.0V, 1.2VStep-Down ConverterUltra-Small 0603 Inductor (Height 1mm)Up to 92% Efficiency3.0MHz Switching FrequencyMODE Selection Pin to Select Forced PWM or PWM/LL Operation ModeCurrent Limit ProtectionAutomatic Soft StartLD...
AAT2749: SpecificationsVIN Range: 2.3V to 5.5VTwo OutputsVOUT_BUCK = 1.8VVOUT_LDO = 1.0V, 1.2VStep-Down ConverterUltra-Small 0603 Inductor (Height 1mm)Up to 92% Efficiency3.0MHz Switching FrequencyMODE Selec...
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US $.26 - .34 / Piece
Switching Converters, Regulators & Controllers 1.5A step-down Cnvrt
US $.26 - .34 / Piece
Switching Converters, Regulators & Controllers 1.5A step-down Cnvrt
The AAT2749 is a two channel power regulator that operates from 2.3V to 5.5V. The AAT2749 contains a 3.0MHz, 600mA step-down converter and a low input voltage 300mA LDO regulator.
The step-down converter can deliver 600mA of load current. The 3.0MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT2749 step-down converter maintains high efficiency throughout the operating range, which is critical for portable applications. Fixed frequency, low noise operation can be forced by a logic signal on the MODE pin.
The AAT2749 also contains a 300mA LDO regulator with input voltage capability as low as 1.62V. The LDO regulator power input can be tied directly to the output of the step-down regulator to increase efficiency.
Total quiescent current for the step-down converter and LDO is a low 100A under no load condition.
The AAT2749 is available in a Pb-free, space-saving 9-pin chip scale package (CSP) (200m bump in 400m pitch) and is rated over the -40C to +85C temperature range.