MP28262 Datasheet: Step-Down Converter





MP28262 Step-Down Converter Datasheet

Part Number MP28262
Description Step-Down Converter
Manufacture MPS
Total Page 14 Pages
PDF Download Download MP28262 Datasheet PDF

Features: The Future of Analog IC Technology MP28 262 2A, 21V, 1.1MHz Synchronous Step-do wn Converter DESCRIPTION The MP28262 i s a high frequency synchronous rectifie d step-down switch mode converter with built in internal power MOSFETs. It off ers a very compact solution to achieve 2A continuous output current over a wid e input supply range with excellent loa d and line regulation. The MP28262 oper ates at high efficiency over a wide out put current load range. Current mode op eration provides fast transient respons e and eases loop stabilization. Full pr otection features include OCP and therm al shut down. The MP28262 requires a mi nimum number of readily available stand ard external components and is availabl e in a space saving 3mm x 4mm 14-pin QF N package. FEATURES • Wide 4.5V to 2 1V Operating Input Range • 2A Output Current • Low RDS(ON) Internal Power MOSFETs • Proprietary Switching Loss Reduction Technique • Fixed 1.1MHz Sw itching Frequency • Sync from 400kHz to 2MHz External Clock • Internal Co.

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The Future of Analog IC Technology
MP28262
2A, 21V, 1.1MHz
Synchronous Step-down Converter
DESCRIPTION
The MP28262 is a high frequency synchronous
rectified step-down switch mode converter with
built in internal power MOSFETs. It offers a
very compact solution to achieve 2A continuous
output current over a wide input supply range
with excellent load and line regulation. The
MP28262 operates at high efficiency over a
wide output current load range.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include OCP and thermal
shut down.
The MP28262 requires a minimum number of
readily available standard external components
and is available in a space saving 3mm x 4mm
14-pin QFN package.
FEATURES
Wide 4.5V to 21V Operating Input Range
2A Output Current
Low RDS(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction
Technique
Fixed 1.1MHz Switching Frequency
Sync from 400kHz to 2MHz External Clock
Internal Compensation
OCP Protection and Thermal Shutdown
Output Adjustable from 0.8V
Available in 14-pin QFN3x4 Package
APPLICATIONS
Notebook Systems and I/O Power
Networking Systems
Digital Set Top Boxes
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
The information in this datasheet about the product and its associated
technologies are proprietary and intellectual property of Monolithic Power
Systems and are protected by copyright and pending patent applications
TYPICAL APPLICATION
VIN
PG
ON/OFF
1 IN
BST 6
9 PG
R3
100K11 VCC
MP28262
7 EN/SYNC
SW 2,3,4,5
FB 8
NC GND AGND
10 12,13 14
Rt
24.9K
R1
4.99K
R2
10K
Efficiency
VOUT=1.2V
100
90 Vin=5V
80
70
60 Vin=12V
50
40 Vin=21V
30
20
10
0
0 0.5
1 1.5
2
OUTPUT CURRENT (A)
MP28262 Rev. 0.92
4/28/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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