TPS51211

TPS51211 www.ti.com SLUSAA7B – NOVEMBER 2010 – REVISED MAY 2013 High-Performance, Single Synchronous Step-Down Controller For Notebook Power Supply FEATURES 1 2 Wide Input Voltage Range: 3 V to 28 V Output Voltage Range: 0.7 V to 2.6 V Wide Output Load Range: 0 to 20A+ Built-in 0.5% 0.7 V Reference 290-kHz, Adaptive On-Time D-CAP™ MODE Control 4700 ppm/°C RDS(on) Current Sensing Internal 1-ms Voltage Servo Soft-start Pre-Charged Start-up Capability Built in Output Discharge Power Good Output Integrated Boost Switch Built-in OVP/UVP/OCP Thermal Shutdown (Non-latch) SON-10 (DSC) Package APPLICATIONS Notebook Computers I/O Supplies System Power Supplies DESCRIPTION The TPS51211 is a small-sized single buck controller with adaptive on-time D-CAP™ mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.7 V to 2.6 V. The device requires an external 5-V supply. The TPS51211 is available in a 10-p...