MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 4
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin #
TQFN10 SOIC8E
Name Description
6, 7, 8 5, 6 SW
Power Switch Output. Inductor connection to drains of the internal PFET
and NFET switches.
9 7 PG
Power-good indicator. PG is pulled low when output is outside the window
of regulation or the device enters shutdown.
10 8 EN
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
450k internal resistor.
1 1 FB
Feedback Input. Connect FB to the center point of the external resistor
divider. The feedback threshold voltage is 0.6V.
2, 3
Exposed
Pad
2, 3
Exposed
Pad
GND
Ground. Connect Exposed Pad to ground plane for optimal thermal
performance.
4, 5 4 PVIN
Power Stage Supply Input. Bypass to GND with a 2.2F or bigger ceramic
capacitor.