MP28127 Datasheet: Step-Down Switching Regulator





MP28127 Step-Down Switching Regulator Datasheet

Part Number MP28127
Description Step-Down Switching Regulator
Manufacture MPS
Total Page 9 Pages
PDF Download Download MP28127 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP28127 is an internally com pensated 1.5MHz fixed frequency PWM syn chronous step-down regulator. MP28127 o perates from a 2.7V to 5.5V input and g enerates an output voltage as low as 0. 8V. The MP28127 integrates a high-side switch and a synchronous rectifier for high efficiency without an external Sch ottky diode. With peak current mode con trol and internal compensation, the MP2 8127 based solution delivers a very com pact footprint with a minimum component count. The MP28127 is available in a s mall 3mm x 3mm 10-lead QFN package. MP 28127 1.25A, 5.5V Synchronous Step-Down Switching Regulator FEATURES • 1.25A Output Current • Input Operation Ran ge: 2.7V to 5.5V • All Ceramic Capaci tor Design • 1.5MHz Fixed Switching F requency • Adjustable Output from 0.8 V to 0.9xVIN • Internal Soft-Start Frequency Synchronization Input • P ower Good Output • Thermal Shutdown Cycle-by-Cycle Current Limiting • Hiccup Short Circuit Protection • 3mm x 3mm 10.

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The Future of Analog IC Technology
DESCRIPTION
The MP28127 is an internally compensated
1.5MHz fixed frequency PWM synchronous
step-down regulator. MP28127 operates from a
2.7V to 5.5V input and generates an output
voltage as low as 0.8V.
The MP28127 integrates a high-side switch and
a synchronous rectifier for high efficiency
without an external Schottky diode. With peak
current mode control and internal
compensation, the MP28127 based solution
delivers a very compact footprint with a
minimum component count.
The MP28127 is available in a small 3mm x
3mm 10-lead QFN package.
MP28127
1.25A, 5.5V Synchronous
Step-Down Switching Regulator
FEATURES
1.25A Output Current
Input Operation Range: 2.7V to 5.5V
All Ceramic Capacitor Design
1.5MHz Fixed Switching Frequency
Adjustable Output from 0.8V to 0.9xVIN
Internal Soft-Start
Frequency Synchronization Input
Power Good Output
Thermal Shutdown
Cycle-by-Cycle Current Limiting
Hiccup Short Circuit Protection
3mm x 3mm 10-lead QFN Package
APPLICATIONS
µP/ASIC/DSP/FPGA Core and I/O Supplies
Printers and LCD TVs
Network and Telecom Equipment
Point of Load Regulators
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
VIN
2.7V to 5.5V
47
POK
OFF ON
IN
POK
BS
SW
MP28127
EN/SYNC
GND
FB
C3
100nF 1.2
400
310
VOUT
1.8V / 1.25A
47
MP28127 Rev. 0.9
6/7/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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