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MP2305 Datasheet Preview

MP2305 Datasheet

23V Synchronous Rectified Step-Down Converter

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The Future of Analog IC Technology
DESCRIPTION
The MP2305 is a monolithic synchronous buck
regulator. The device integrates 130m
MOSFETS that provide 2A continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on. Shutdown mode drops the supply
current to 1μA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
EVALUATION BOARD REFERENCE
Board Number
EV2305DS-00A
Dimensions
2.0”X x 1.5”Y x 0.5”Z
MP2305
2A, 23V Synchronous Rectified
Step-Down Converter
FEATURES
2A Output Current
Wide 4.75V to 23V Operating Input Range
Integrated 130mPower MOSFET Switches
Output Adjustable from 0.923V to 20V
Up to 93% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
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
C5
10nF
21
7 IN
EN
BS 3
SW
8
SS
MP2305
5
FB
GND
COMP
46
Efficiency vs
Load Current
100
95 VOUT = 3.3V
90
85 VOUT = 2.5V
80
75
70
65
60
55
50
0 0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
MP2305-EC01
MP2305 Rev. 1.83
www.MonolithicPower.com
12/24/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1




MPS

MP2305 Datasheet Preview

MP2305 Datasheet

23V Synchronous Rectified Step-Down Converter

No Preview Available !

MP2305 – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
Part Number*
MP2305DS
ORDERING INFORMATION
Package
SOIC8
Top Marking
MP2305DS
Free Air Temperature (TA)
-40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2305DS–Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP2305DS–LF–Z)
PACKAGE REFERENCE
TOP VIEW
BS
IN
SW
GND
1
2
3
4
8 SS
7 EN
6 COMP
5 FB
MP2305_PD01
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN .......................–0.3V to +26V
Switch Voltage VSW .............................................
–1V (-5V for <10ns) to 26.3V (28V for <10ns)
Boost Voltage VBS ..........VSW – 0.3V to VSW + 6V
All Other Pins .................................–0.3V to +6V
Continuous Power Dissipation (TA = +25°C)(2)
……………………………………………….1.39W
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ............. –65°C to +150°C
Recommended Operating Conditions (3)
Input Voltage VIN ............................4.75V to 23V
Output Voltage VOUT.....................0.923V to 20V
Operating Junction Temp. (TJ). -40°C to +125°C
Thermal Resistance (4) θJA θJC
SOIC8..................................... 90 ...... 45... °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 TJ(MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-
TA)/ θJA. 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 PCB.
MP2305 Rev. 1.83
www.MonolithicPower.com
12/24/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
2


Part Number MP2305
Description 23V Synchronous Rectified Step-Down Converter
Maker MPS
Total Page 11 Pages
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