MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
PIN FUNCTIONS
Pin #
TQFN10
SOIC8E
6, 7, 8
9
10
1
2, 3
Exposed
Pad
4, 5
5, 6
7
8
1
2, 3
Exposed
Pad
4
Name
SW
PG
EN
FB
GND
PVIN
Description
Power Switch Output. Inductor connection to drains of the internal PFET
and NFET switches.
Power-good indicator. PG is pulled low when output is outside the window
of regulation or the device enters shutdown.
Regulator Enable Control Input. Drive EN above 1.8V to turn on the
MP2249. Drive EN below 0.4V to turn it off. EN is pulled to GND with a
450kΩ internal resistor.
Feedback Input. Connect FB to the center point of the external resistor
divider. The feedback threshold voltage is 0.6V.
Ground. Connect Exposed Pad to ground plane for optimal thermal
performance.
Power Stage Supply Input. Bypass to GND with a 2.2µF or bigger ceramic
capacitor.
MP2249 Rev.1.0
11/2/2010
www.MonolithicPower.com
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© 2010 MPS. All Rights Reserved.
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