NX2158 Datasheet PDF

Microsemi NX2158

The NX2158 controller IC is a boost controller IC de- n Single Supply Voltage fom 3V to 5.5V signed for step up DC to DC converter applications. The n Programmable Frequency up to 2MHz NX2158 operates at programmable frequency from n Internal Digital Soft Start Function 200kHz to 2MHz and employs cycle by cycle current n Cycle by Cycle Current Limit by Sensing Rdson of limiting by sensing the Rdson of NMOSFET. For example, 935 means that this NX2158 is packaged in the 35th week of 2009 Rev.1.2 12/30/09 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA.

Part No.	NX2158
Datasheet	NX2158 Download
Manufacturer	Microsemi
Description	PWM BOOST CONTROLLER
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DESCRIPTION

FEATURES

NMOSFET Other features of the device are: thermal shutdown, n Pb-free and RoHS compliant adaptive deadband control, internal digital soft start, VCC UVLO and Shutdown capability via the ENBUS pin.

APPLICATIONS

n USB 3.0 3.3V to 5V conversion TYPICAL APPLICATION VIN 3.3V 2.2uH 22uF,X5R VOUT 5V 10 1uF PGOOD EN 10k 2*22uF 1uF VCC LDrv 14k SW HDrv PGND BST 68p FB PGOOD ENBUS RT AGND OCP COMP 22k 10k 15pF 308k 59k 20k 1nF Figure1 - Typical application of NX2158 Device NX2158CMTR ORDERING INFORMATION Temperature Package Frequency 0 to 70o C 3X3 MLPQ-16L 200kHz to 2MHz Pb-Free Yes Package Marking : NX2158XXX XXX is date code. 92841, 714-898-8121, Fax: 714-893-2570 1

ABSOLUTE MAXIMUM RATINGS

(NOTE1) VCC to GND .................................................. 6.5V BST to GND Voltage ...................................... 6.5V VIN to GND Voltage ........................................ 6.5V SW to GND .................................................... -2V to 6.5V All other...