描述 Description

See LX7169CLD 3A Step-Down Converter as potential replacement.The LX13045A operates as a?Current Mode, Synchronous 1.3MHz?PWM Buck regulator with an?adjustable output voltage. It provides?up to 2 amps of DC current with no?minimum load requirement. Few?external components are necessary?since the MOSFET switches and?compensation components are internal?to the IC.?The LX13045A operational supply?voltage range covers 4.5V to 6V.?During start-up an internal UVLO?keeps the output off until VIN reaches3.7V, VOUT is then ramped in the soft?start mode to limit the supply inrush?current. Tight output voltage?regulation is achieved with the 800mv,?±2% reference to program VOUT from?800mV to 90% of VIN.?The output response is fast fordynamic load changes using a high?bandwidth error amplifier control loop.?Power conversion efficiency is?maximized with low RDSON of the?MOSFET switches and small regulator?quiescent current.?The LX13045A features include:?OVP monitoring at the feedback pin for?+110% threshold detection;?PGOOD?indicator to externally signal when?VOUT is within ±5% of nominal, and?Thermal shutdown. The Current limit?monitors the Switch pin load on a cycle?by cycle basis for rapid protection?during fault conditions.?The 6 pin MO-229 package provides?a small form factor with excellent?power dissipation capability.??ROHS, PB Free-->??ROHS