The TPS51123A is a cost effective, dual-synchronous buck controller targeted for notebook
system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components.
The TPS51123A supports high-efficiency, fast transient responses and provides a combined power-good
signal. Out-of-Audio mode
light-load operation enables low acoustic noise at much higher efficiency than conventional forced
PWM operation. Adaptive on-time D-CAP control
provides convenient and efficient operation. The part operates with supply input voltages ranging
from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123A is available in a
24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.
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