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| MP2115 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – 2A Synchronous Step-Down Converter with Programmable Input Current Limit | |||
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The Future of Analog IC Technology
MP2115
2A Synchronous Step-Down Converter
with Programmable Input Current Limit
DESCRIPTION
The MP2115 is a high frequency, current mode,
PWM step-down converter with integrated input
current limit switch. The step-down converter
integrates a main switch and a synchronous
rectifier for high efficiency without an external
Schottky diode. The input average current limit
can be externally programmed. It is ideal for
powering portable equipment that is powered
by an USB port. The MP2115 can supply 2A of
load current from a 2.8V to 6V input voltage.
The output voltage can be regulated as low as
0.6V.
The MP2115 is available in a space-saving
10-pin QFN package.
FEATURES
⢠High Efficiency: Up to 92%
⢠Programmable Switching Frequency from
0.7MHz-2MHz
⢠Programmable Input Current Limit
⢠2A Available Load Current
⢠2.8V to 6V Input Voltage Range
⢠Output Voltage as Low as 0.6V
⢠Current Mode Control
⢠Power Good Indicator
⢠Short Circuit Protection
⢠Thermal Fault Protection
⢠<0.1µA Shutdown Current
⢠Space Saving 3mm x 3mm QFN10 Package
APPLICATIONS
⢠USB Powered Devices
⢠Cellular and Smart Phones
⢠Microprocessors and DSP Core Supplies
⢠PDAs
⢠MP3 Players
⢠Digital Still and Video Cameras
⢠Portable Instruments
For MPS green status, please visit MPS website under Quality Assurance.
âMPSâ and âThe Future of Analog IC Technologyâ are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
USB Input
VSYS
R4
100k
R3
100k
U1
1 VIN
PG
8 VSYS MP2115DQ
4 AGND
EN 9
7
SW
FB 3
6TPE470MI x 3
R6
86.6k
R5
24.9k
PG
EN
3.8V/2A
R1
C5
51k
220pF
VOUT
R2
9.53k
Efficiency
VOUT=3.8V, Freq=1.5MHz
100
VIN=5.0V
90
VIN=5.5V
80
70
60
50
0.0 0.1 0.2 0.3 0.4 0.5 0.6
LOAD CURRENT ( A )
MP2115 Rev. 1.0
www.MonolithicPower.com
1
2/28/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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