DESCRIPTION
FEATURES
n n n n Bus voltage operation from 2V to 25V Fixed 300kHz voltage mode controller Internal Digital Soft Start Function Prebias Startup The NX2124/2124A operates at fixed 300kHz, employs n Less than 50 nS adaptive deadband fixed loss-less current limiting by sensing the Rdson of n Current limit triggers hiccup by sensing Rdson of synchronous MOSFET followed by hiccup feature. n Synchronous MOSFET No negative spike at Vout during startup and Feedback under voltage also triggers hiccup. Other features of the device are: 5V gate drive, Adaptive n shutdown Pb-free and RoHS compliant deadband control, Internal digital soft start, Vcc APPLICATIONS
undervoltage lock out and shutdown capability via the comp pin. n n Graphic Card on board converters Memory Vddq Supply in mother board applications n On board DC to DC such as 5V to 3.3V, 2.5V or 1.8V n Hard Disk Drive n Set Top Box TYPICAL APPLICATION Vin +5V HI=SD M3 C7 27pF L2 1uH C4 100uF R5 D1 10 MBR0530T1 C3 1uF 5 Vcc R4...
Microsemi
