NX2309 Datasheet PDF

Microsemi NX2309

The NX2309 controller IC is a combination synchronous n 12V PWM controller plus LDO controller Buck and LDO controller IC designed to convert single n Fixed hiccup current limit by sensing Rdson of 12V supply to low cost dual on board supply applica- MOSFET tions. The synchronous controller is used for high cur- n 12V high side and low side driver rent high efficiency step down DC to DC converter appli- n Fixed internal 300kHz for switching controller cations while the LDO controller in conjunction with an n Dual Independent Digital Soft Start Function external low cost N ch MOSFET can be used as a very n Adaptive Deadband Control low drop out regulator in applications such as converting n Shut Down switching via pulling down COMP pin 3.3V to 2.5V output. The LDO controller has Feedback Under n n n Voltage Lock Out as a short circuit protection.Other features includes: 12V gate drive capability , Adaptive dead n APPLICATIONS PCI Graphic Card on board converters Mother board On board DC to DC applications On board Single Supply 12V DC to DC such as 12V to 3.3V, 2.5V or 1.8V Set Top Box and LCD Display band control.