MP2136
2.5V to 6V Input, 2MHz, 1A
Synchronous Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP2136 is a 2MHz constant frequency,
current mode, PWM step-down converter with
integrated main switch and synchronous
rectifier that is ideal for powering portable
equipment that runs from a single Li-Ion or Li-
Polymer battery.
The MP2136 can supply up to 1A load current
from a 2.5V to 6V input voltage. The output
voltage can be as low as 0.6V.
Additional features include <1µA shutdown
current, internal soft-start, cycle-by-cycle over
current protection, short circuit protection, and
thermal shutdown.
The MP2136 is available in a 6-pin, QFN6
2mm×2mm package.
FEATURES
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2MHz Constant Switching Frequency
1A Available Load Current
2.5V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
Current Mode Control
Cycle-by-Cycle Over Current Protection
Short Circuit Protection
Thermal Shutdown
<1µA Shutdown Current
Internal Soft-Start
Space-Saving 6-pin, QFN6 2mm×2mm
package
Cellular Phones
Microprocessors and DSP Core Supplies
PDAs and Smart Phones
MP3 and Portable Media Players
Digital Still and Video Cameras
Portable Instruments
APPLICATIONS
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“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs.
Output Current
U1
L1
1.2uH
100
R1
300k
1%
R2
300k
1%
L=2.2uH Vo=1.2V
Vin=3.3V
EFFICIENCY (%)
VIN
2.5V - 6V
C1
4.7uF
3
IN
4
SW
MP2136EG
C2
10uF
VOUT
1.2V/1A
90
80
70
60
50
40
30
20
10
0
OFF ON
EN
2
EN
1
NC
FB
GND
6
5
Vin=6V
Vin=5V
Vin=2.5V
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
OUTPUT CURRENT (A)
MP2136 Rev. 0.9
8/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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