NX2820 - NEXSEM

NX2820 2A SOURCE/SINK LDO & SYNCHRONOUS SWITCHING CONTROLLER

The NX2820 is a combination of synchronous Buck con- n troller IC and 2A internal source/sink LDO regulator. It is n designed for DDR memory application where typically n synchronous controller provides either a 2.5V Vddq for n DDR1 type memory(1.8V for DDRII) and the internal LDO n supplies Vtt from the Vddq supply. n NX2820 features internal digita.

Features

internal digital soft start,VCC n undervoltage lock out, bus enable as well as over current limit by sensing low side MOSFET Rdson. The n source and sink LDO is protected by thermal shutdown and current limit. The NX2820 is housed in 16 pin MLPQ n Package which provides small yet good thermal capa- n bility ideal for computer or graphic card applications. n PRELIMINARY DATA SHEET FEATURES Internal 2A Souce and Sink LDO Internal current Limit and thermal shutdown for LDO Shut down LDO by pulling down Refin pin Bus voltage operation from 4V to 25V Loss-Less Current Limit via Rdson of Low sid.