TPS51427ARHBR Description

TPS51427ARHBR belongs to the family of dual synchronous step-down controllers, which is used as part of a low-cost suite of notebook power bus regulators. It enables system designs with minimal external component counts. It is specifically designed for notebook and mobile communications applications. Seamless operation between PWM mode under heavy load conditions or between PWM mode under heavy load conditions can be supported based on the fixed-frequency emulated adaptive on-time control which can reduce frequency operation at light loads for high-efficiency down to the milliampere range.

TPS51427ARHBR Features

Fixed 3.3-VREF output capable of sourcing 10 mA

Temperature-compensated low-side RDS(on) current sensing

Adaptive gate drivers with the integrated boost switch

Bootstrap charge auto-refresh

Integrated soft start, tracking soft stop

TPS51427ARHBR Applications

Notebook I/O and system bus rails

Graphics application

PDAs and mobile communication devices