NX2158 Datasheet, PDF (1/5 Pages) Microsemi Corporation – PWM BOOST CONTROLLER

NX2158
PWM BOOST CONTROLLER
PRODUCTION DATA SHEET
Pb Free Product
DESCRIPTION
FEATURES
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.
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
10k
PGOOD
EN
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 70^o C 3X3 MLPQ-16L 200kHz to 2MHz
Pb-Free
Yes
Package Marking : NX2158XXX XXX is date code. For example, 935 means that this NX2158 is
packaged in the 35th week of 2009
Rev.1.2
Microsemi
1
12/30/09
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]