Click to expand full text
WWW.Microsemi .COM
LX13049
TM ® VREF @ 800mV, 1.25A, 1.0MHZ PWM
PRODUCTION DATA SHEET
DESCRIPTION
The LX13049 operates as a Current The regulator is capable of providing an
Mode PWM Buck regulator that output load current up to 1.25A and has
switches to PFM mode under light no minimum load current requirement
loads. The entire regulator function is for stable operation. Current limit
implemented with only a few, low- senses on a cycle-by cycle basis to
cost external components.
protect the switch. Power conversion
The LX13049 responds quickly to efficiency is maximized with PFM
dynamic load changes using a high mode of operation and low regulator
bandwidth error amplifier and internal quiescent current.
compensation.