TPS51511RHLT Description

TPS51511RHLT is a 350-kHz D-CAP-mode synchronous switcher with a 2-A, source-only low drop-out (LDO) regulator. It is specifically designed for low-cost/low noise/1ow external-component count power systems for GPU applications. The integrated 'OD' switch in the buck controller supports dynamic output voltage change. The current mode option of the synchronous buck converter can support pure output ceramic-capacitor applications. The open-drain LDO power-good signal can be accessed through the OD pin when it is needed in the application. The TPS51511RHLT is available in the thermally-enhanced 20-pin QFN package and is specified from -40°C to 85°C.

TPS51511RHLT Features

Adjustable-Output Buck Converter, 0.75 V to 3.3 V

Wide Input Voltage Range: 3.0-V to 28-V

D-CAPTM Mode with 100-ns Load Step Response

Current Mode Option Supports Ceramic Output Capacitors

Current Sensing From RDS(ON) or Resistor

Internal Switch Supports Dynamic Output Voltage Change

Advanced PGOOD Mask Feature.

Equipped With PGOOD, OVP, and UVP

Output Discharge

5 V UVLO Protection

TPS51511RHLT Applications

GPU Power

Notebook Computers

Automotive 

Infotainment & cluster 

Communications equipment