MP3410
1.3A, 550kHz Synchronous
Rectified Step-up Converter
The Future of Analog IC Technology
DESCRIPTION
The MP3410 is a highly efficient, synchronous,
fixed frequency, current-mode step-up converter
with output to input disconnect, inrush current
limiting and internal soft-start. It includes an error
amplifier, ramp generator, comparator, N-Channel
switch and P-Channel synchronous rectified
switch (which greatly improves efficiency). The
output disconnect feature allows the output to be
completely isolated from the input in shutdown
mode.
The 550kHz switching frequency allows for
smaller external components producing a
compact solution for a wide range of load currents.
The internal compensation and soft-start
minimizes the external component count and
limits the inrush current during startup. The
MP3410 has integrated power MOSFET which
can support up to 6V output and typical 1.3A
switch current.
The MP3410 is offered in a thin SOT23-5
package.
FEATURES
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Over 90% Efficiency
Output to Input Disconnect at Shutdown Mode
Internal Synchronous Rectifier
Inrush Current Limiting and Internal Soft-Start
Internal Compensation
1.3A Typical Switch Current Limit
550kHz Fixed Switching Frequency
Zero Current Shutdown Mode
Thermal Shutdown
5-Pin TSOT-23 Package
MP3 Players
Handheld Computers and PDAs
Digital Still and Video Cameras
External Modems
Small LCD Displays
APPLICATIONS
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“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V
IN
1.8V - 3.2V
4
SW
OUT
3
100
90
V
OUT
3.3V
400mA
EFFICIENCY (%)
Efficiency vs
Load Current
V
IN
=3.6V
80
70
60
50
40
30
10
V
OUT
=5V
100
LOAD CURRENT (mA)
1000
V
IN
=2.4V
EN
5
EN
MP3410
GND
2
FB
1
MP3410 Rev. 1.12
6/30/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1
MP3410 — 1.3A, 550kHz SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
ORDERING INFORMATION
Part Number*
MP3410DJ
Package
TSOT23-5
Top Marking
P3
Free Air Temperature (T
A
)
-40°C to +85°C
*
For Tape & Reel, add suffix –Z (e.g. MP3410DJ–Z)
For RoHS compliant packaging, add suffix –LF (e.g. MP3410DJ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
FB
GND
OUT
1
2
3
4
SW
5
EN
TSOT23-5
ABSOLUTE MAXIMUM RATINGS
(1)
All Pins .........................................-0.3V to +6.5V
(2)
Continuous Power Dissipation (T
A
= +25°C)
........................................................... 0.47W
Storage Temperature............... -65°C to +150°C
Thermal Resistance
(4)
TSOT23-5.............................. 220 .... 110..
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX)=(T
J
(MAX)-
T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7 4-layer board.
θ
JA
θ
JC
Recommended Operating Conditions
(3)
Supply Voltage V
IN
.............................1.8V to 6V
Output Voltage V
OUT
...........................2.5V to 6V
Maximum Junction Temp. (T
J
) .............. +125°C
MP3410 Rev. 1.12
6/30/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
2
MP3410 — 1.3A, 550kHz SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
ELECTRICAL CHARACTERISTICS
V
EN
= V
OUT
= 3.3V, T
A
= +25°C, unless otherwise noted.
Parameter
Startup Supply Voltage
Output Voltage Range
Supply Current (Shutdown)
Supply Current
Feedback Voltage
Feedback Input Current
Switching Frequency
Maximum Duty Cycle
EN Input Low Voltage
EN Input High Voltage
(see Chart EN high voltage vs
Input for details)
EN Pull Down Resistor
Low-Side On Resistance
(5)
Low-Side Current Limit
High-Side On Resistance
(5)
Thermal Shutdown
(5)
Thermal Shutdown Hysteresis
(5)
Note:
5) Guaranteed by design, not tested.
Symbol Condition
V
ST
V
OUT
V
EN
= V
OUT
=0V, V
SW
= 5V
V
FB
= 1.3V
V
FB
V
FB
= 1.19V
f
SW
D
MAX
V
IN
=1.8V
V
IN
=3.3V
V
IN
=5V
R
ONLS
I
LIM
R
ONHS
V
OUT
= 3.3V
V
OUT
= 3.3V
I
LOAD
= 0mA
R
LOAD
= 50Ω
Min
1.5
2.5
Typ
1.6
1.65
Max
1.8
6.0
Units
V
V
μA
μA
V
nA
KHz
%
V
V
0.15
360
1.15
410
80
1.05
1.65
2.15
1
300
1.3
530
160
30
1.19
50
550
90
0.5
1.23
690
95
0.4
mΩ
mΩ
A
700
mΩ
°C
°C
MP3410 Rev. 1.12
6/30/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
3
MP3410 — 1.3A, 550kHz SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit on front page, V
IN
= 2.4V, V
OUT
= 3.3V, T
A
= +25°C, unless otherwise noted.
MP3410 Rev. 1.12
6/30/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
4
MP3410 — 1.3A, 550kHz SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
Circuit on front page, V
IN
= 2.4V, V
OUT
= 3.3V, T
A
= +25°C, unless otherwise noted.
PIN FUNCTIONS
Pin #
1
2
3
4
Name Description
FB
GND
OUT
SW
Regulation Feedback Input. Connect to an external resistive voltage divider from the output to
FB to set the output voltage.
Ground.
Supply Input for the MP3410. Connect to the output of the converter.
Output Switching Node. SW is the drain of the internal low-side N-Channel MOSFET and
high-side P-Channel MOSFET. Connect the inductor to SW to complete the step-up converter.
Regulator On/Off Control Input. A logic high input turns on the regulator. A logic low input (V
EN
< 0.4V) puts the MP3410 into low current shutdown mode. EN Input High Voltage will shift
upward for a higher V
IN
. For a given V
IN
, as long as the voltage applied at EN pin is equal to or
higher than correspondent EN-High-min value specified in the EC table , the part can turn on
normally.
5
EN
MP3410 Rev. 1.12
6/30/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
5
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