MP28367 Datasheet: Step-Down Converter





MP28367 Step-Down Converter Datasheet

Part Number MP28367
Description Step-Down Converter
Manufacture MPS
Total Page 9 Pages
PDF Download Download MP28367 Datasheet PDF

Features: TM The Future of Analog IC Technology TM DESCRIPTION The MP28367 is a monolithi c step-down switch mode converter with a built-in internal power MOSFET. It ac hieves 1A peak output current over a wi de input supply range with excellent lo ad and line regulation. Current mode op eration provides fast transient respons e and eases loop stabilization. Fault c ondition protection includes cycle-by-c ycle current limiting and thermal shutd own. The MP28367 requires a minimum num ber of readily available standard exter nal components. The MP28367 is availabl e in TSOT23-6 packages. MP28367 1A, 21 V, 1.4MHz Step-Down Converter in a TSOT 23-6 FEATURES • 1A Output Current • 0.35Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic C apacitors • Up to 90% Efficiency • 0.1μA Shutdown Mode • Fixed 1.4MHz F requency • Thermal Shutdown • Cycle -by-Cycle Over Current Protection • 6 V to 21V Operating Input Range • Outp ut Adjustable from 0.81V to 15V • Available in TSOT23-6 Packages APPLICATIONS • Distri.

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TM
The Future of Analog IC Technology TM
DESCRIPTION
The MP28367 is a monolithic step-down switch
mode converter with a built-in internal power
MOSFET. It achieves 1A peak output current
over a wide input supply range with excellent
load and line regulation. Current mode
operation provides fast transient response and
eases loop stabilization. Fault condition
protection includes cycle-by-cycle current limiting
and thermal shutdown.
The MP28367 requires a minimum number of
readily available standard external components.
The MP28367 is available in TSOT23-6 packages.
MP28367
1A, 21V, 1.4MHz
Step-Down Converter in a TSOT23-6
FEATURES
1A Output Current
0.35Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 90% Efficiency
0.1μA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
6V to 21V Operating Input Range
Output Adjustable from 0.81V to 15V
Available in TSOT23-6 Packages
APPLICATIONS
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
VIN
12V
OFF ON
5 IN
BST 1
CB
10nF
MP28367 SW 6
D1
B230A
4 EN
GND
2
FB 3
VOUT
3.3V @ 1A
Efficiency vs
Load Current
100
95 VOUT = 5V
90
85
80 VOUT = 3.3V
75
70
65
60
55 VIN = 12V
50
10
100 1000
LOAD CURRENT (mA)
MP28367 Rev. 0.9
12/13/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
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