MP3115 MPS, MP3115 Datasheet

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MP3115

Manufacturer Part Number
MP3115
Description
High-efficiency, Single-cell Alkaline, 1.3mhz Synchronous Step-up Converter With Output Disconnect
Manufacturer
MPS
Datasheet
The Future of Analog IC Technology
DESCRIPTION
The MP3115 is a synchronous, fixed frequency,
current mode step-up converter with output-to-
input disconnect optimized to boost a single AA
Alkaline battery to 2.5V or 3.3V.
It can startup from an input voltage as low as
0.950V and provide in-rush current limiting as
well as output short circuit protection. The
integrated
switch
eliminates an external schottky diode. The
output disconnect feature allows the output to be
completely discharged, thus allowing the part to
draw less than 1µA of current in shutdown mode.
The 1.3MHz switching frequency allows for the
use of smaller external components and the
internal compensation and soft-start minimize
the external component count, all helping to
produce a compact solution for a wide range of
load current.
The MP3115 regulates the output voltage up to
4.0V or 3.3V at 200mA from a single cell AA
battery, without the use of an external Schottky
diode.
The MP3115 is offered in a SOT23-6 package.
EVALUATION BOARD REFERENCE
TYPICAL APPLICATION
MP3115 Rev. 0.9
1/25/2008
EV3115DT-00A
Board Number
provides
P-Channel
0.95V to 2.5V
VIN
EN
L x W x H (5cm x 5cm x 1.2cm)
improved
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
synchronous
Dimensions
efficiency
© 2008 MPS. All Rights Reserved.
rectified
www.MonolithicPower.com
1
6
4
and
SW
IN
EN
High-Efficiency, Single-Cell Alkaline, 1.3MHz
MP3115
GND
2
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
OUT
Over 90% Efficiency
Output-to-Input Disconnect in Shutdown
Mode
Internal Synchronous Rectifier
Output Voltage up to 4.0V without an
External Schottky Diode
Inrush
Soft-Start
Internal Compensation
1A Minimum Peak Current Limit
1.3MHz Fixed Switching Frequency
Zero Current Shutdown Mode
Thermal Shutdown
6-Pin SOT-23 Package
Single-cell Alkaline Consumer Products
MP3 Players
Wireless Mouse
RFTags
Audio Recorders
FB
Synchronous Step-up Converter
5
3
Current
with Output Disconnect
3.3V
Limiting
VOUT
and
MP3115
Internal
1

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MP3115 Summary of contents

Page 1

... The MP3115 regulates the output voltage up to 4.0V or 3.3V at 200mA from a single cell AA battery, without the use of an external Schottky diode. The MP3115 is offered in a SOT23-6 package. ...

Page 2

... GND Part Number* Package MP3115DT SOT23-6 * For Tape & Reel, add suffix –Z (eg. MP3115DT–Z) For RoHS Compliant Packaging, add suffix –LF (eg. MP3115DT–LF–Z) ELECTRICAL CHARACTERISTICS V = 1.5V 3.3V OUT Parameter Minimum Startup Voltage (4) Minimum Operating Voltage ...

Page 3

... Regulator On/Off Control Input. A logic high input (V low input (V < 0.4V) puts the MP3115 into low current shutdown mode OUT Supply Input for the MP3115 and Output Voltage Sense Input. Connect to the output of the converter Input Voltage. MP3115 Rev. 0.9 1/25/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. > ...

Page 4

... MP3115 – HIGH-EFFICIENCY 1.3MHz SYNCHRONOUS STEP-UP CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS C1 = 10µF, C2=22µF, L=1.7µH,R2=20K, T Efficiency vs. Efficiency vs. Efficiency vs. Load Current Load Current Load Current =1. =2.5V OUT 60 10 100 1000 LOAD CURRENT (mA) Line Regulation 2.60 2.56 2.52 2.48 2.44 I =100mA OUT 2. ...

Page 5

... MP3115 – HIGH-EFFICIENCY 1.3MHz SYNCHRONOUS STEP-UP CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS C1 = 10µF, C2=22µF, L=1.7µH,R2=20K 0.5V/div 2V/div. V OUT 2V/div V EN 2V/div. 1ms/div Short Circuit V =V =2V, V =3. OUT V IN 2V/div 2V/div. V OUT 5V/div I L 0.2A/div. No Load Ripple V =V =0.92V ...

Page 6

... The MP3115 starts switching when the output voltage is close to the input voltage. If the input voltage is less than 1.6V, the MP3115 will start with CCM (constant current mode) until the output voltage crosses 1.6V. After that, the soft-start circuit will take over to bring the output voltage to the regulated value ...

Page 7

... IC as possible. All feedback components must be kept close to the FB pin to prevent noise injection on the FB pin trace. The ground return of C1 and C2 should be tied close to the GND pin. See the MP3115 demo board layout for reference. www.MonolithicPower.com © 2008 MPS. All Rights Reserved. ...

Page 8

... MP3115 – HIGH-EFFICIENCY 1.3MHz SYNCHRONOUS STEP-UP CONVERTER PACKAGE INFORMATION PACKAGE OUTLINE DRAWING FOR 6-SOT23 2.80 3.00 6 See Note 7 EXAMPLE TOP MARK AAAA PIN 1 1 TOP VIEW 0.90 1.30 0.30 0.95 BSC 0.50 FRONT VIEW GAUGE PLANE 0.25 BSC 0. 0.55 NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application ...

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