© Semiconductor Components Industries, LLC, 2014

January, 2014 − Rev. P0

1

Publication Order Number:

NCP81148/D

NCP81148

Advance Information

Synchronous Buck Controller

with Auto Power Saving

Mode and Built-In LDO

NCP81148 is a dual synchronous buck controller that is optimized

for converting the battery voltage or adaptor voltage into multiple

power rails required in desktop and notebook system. NCP81148

consists of two buck switching controllers with fixed 5.0 V output on

channel 2, 3.3 V on channel 1 and two on−board LDOs with three

outputs: 5 V / 6

0 mA and 3.3 V or 12 V / 10 mA. NCP81148 supports

high efficiency, fast transient response and provides power good

signals. ON Semiconductor proprietary adaptive−ripple control

enables seamless transition from CCM to DCM, where converter runs

at reduced switching frequency with much higher efficiency at light

load. The part operates with supply voltage ranging from 5.5 V to

28 V. NCP81148 is available in a 28−pin QFN package.

Features

Continue−Conduction−Mode (CCM)

Applications

This document contains information on a new product. Specifications and information

herein are subject to change without notice.

28 PIN QFN, 4x4

MN SUFFIX

CASE 485AR

Device

Package

ORDERING INFORMATION

NCP81148MNTWG

QFN−28

(Pb−Free)

4,000 /

Tape & Reel

MARKING

DIAGRAM

81148 = Specific Device Code

A

= Assembly Location

L

= Wafer Lot

Y

= Year

W

= Work Week

G

= Pb−Free Package

http://onsemi.com

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

PIN CONNECTIONS

(Top View)

(Note: Microdot may be in either location)

81148

ALYWG

G

1

GH1

BST1

SWN1

GL1/FSET

PGND1

CSP1

CSN1

GH2

BST2

SWN2

GL2

PGND2

CSP2

CSN2

GND

1

28