DC-DC Controller (External Switch) 1.8V to 28V Input Sync. Step Down Controller with DCAP Mode, Optimized for Light Load Efficiency DC-DC Cntrlr Single-OUT Step Down 550kHz 14Pin VQFN EP T/R
The TPS51117 is a cost effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for Adaptive On-Time D-CAP™ Mode operation that provides ease of use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milli-ampere load range, or PWM-only mode for low noise operation is selectable.
FEATURES
• High Efficiency, Low Power Consumption, 4.5-μA Typical Shutdown Current
• Fixed Frequency Emulated On-Time Control, Adjustable from 100 kHz to 550 kHz