LX7165 EVAL BOARD USER GUIDE
Microsemi
Analog Mixed Signal Group
One Enterprise Aliso Viejo, CA 92656 USA (800) 713-4113, (949) 380-6100
Page 1
Copyright
2012
Rev. 0.1, 2013-10-23
Rev. 1.0, 2013-10-23
Introduction to Product
The LX7165 is a digitally controlled step-down regulator IC with an integrated 30mΩ high-side P-
channel MOSFET and a 10mΩ low-side N-channel MOSFET. It features Microsemi’s proprietary
constant-frequency hysteretic control engine for near-instantaneous correction to sudden line/load
transients. It does not require high-ESR output capacitors and incorporates energy-saving “PSM”
(Power Saving or Pulse Skip Mode) at light loads, to extend battery life in mobile applications.
The LX7165 has an I
2
C serial interface port for output voltage margining and monitoring if
required (it can operate in default mode too). It includes robust fault monitoring functions.
The LX7165 will operate from 3V to 5.5V, and is available in several fixed output voltage options
from 0.6V to 0.97V (no voltage divider is necessary). Each version’s output voltage can also be
made adjustable with use of an external voltage divider.
