MP2308 Datasheet, PDF (1/15 Pages) Monolithic Power Systems – 18V, 4A Synchronous Step-Down Coverter

The Future of Analog IC Technology
DESCRIPTION
The MP2308 is a synchronous rectified step-
down switch mode converter with built in
internal power MOSFETs. It offers a very
compact solution to achieve 4A continuous
output current over a wide input supply range
with excellent load and line regulation. The
MP2308 has synchronous mode operation for
higher efficiency over 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 MP2308 requires a minimum number of
readily available standard external components
and is available in a space saving 2mm x 3mm
14-pin QFN package.
MP2308
18V, 4A Synchronous
Step-Down Coverter
FEATURES
 Wide 4.75V to 18V Operating Input Range
 4A Output Current
 Low Rds(ON) Internal Power MOSFETs
 300kHz-2MHz Programmable Switching
Frequency
 EN ON/OFF Control
 Light Load Mode Selectable
 External Soft Start
 OCP and Thermal Shutdown
 Available in 14-pin QFN2x3 Package
APPLICATIONS
 DSL Modems
 Cable Modems
 Set Top Boxes
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
4.75V to 18V
VCC
EN
FREQ
R_freq
18.7k
U1
R5
10
IN
VCC
BST
SW
EN _MP2308
AAM
FB
FREQ
SS
GND
C_SS
22nF
100
VOUT
3.3V
95
R1
90
31.6k
85
80
R2
75
10k
70
0.001 0.01
0.1
1
10
MP2308 Rev. 1.0
www.MonolithicPower.com
1
7/9/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.