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MP2303A Datasheet Preview

MP2303A Datasheet

360kHz Synchronous Rectified Step-Down Converter

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The Future of Analog IC Technology
MP2303A
3A, 28V, 360kHz Synchronous Rectified
Step-Down Converter
DESCRIPTION
The MP2303A is a monolithic synchronous
buck regulator. The device integrates a 150m
high-side MOSFET and a 80mlow-side
MOSFET that provide 3A continuous load
current over a wide operating input voltage of
4.7V to 28V. Current mode control provides fast
transient response and cycle-by-cycle current
limit.
An adjustable soft-start prevents inrush current
at turn-on. In shutdown mode, the supply
current drops to lower than 1μA.
This device, available in an 8-pin SOIC and
PDIP-8 packages, provides a very compact
system solution with minimal reliance on
external components.
FEATURES
3A Output Current
Wide 4.7V to 28V Operating Input Range
Integrated MOSFET Switches
Output Adjustable from 0.80V to 25V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 360kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Available in thermally enhanced 8-Pin SOIC
and PDIP-8 packages
APPLICATIONS
Distributed Power Systems
Pre-Regulator for Linear Regulators
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
2
7
IN
EN
1
BS
SW
3
MP2303A
8 SS
FB 5
GND
COMP
46
100
90
VIN=5V
VIN=12V
80
VIN=28V
VIN=24V
70
60
50
VOUT=3.3
40
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
OUTPUT CURRENT
MP2303A Rev.1.1
www.MonolithicPower.com
7/25/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1




MPS

MP2303A Datasheet Preview

MP2303A Datasheet

360kHz Synchronous Rectified Step-Down Converter

No Preview Available !

MP2303A – 3A, 28V, 360kHz SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
Part Number
MP2303ADN*
MP2303ADP**
ORDERING INFORMATION
Package
SOIC8E
PDIP8
Top Marking
M2303ADN
MP2303A
Free Air Temperature (TA)
-40C to +85C
-40C to +85C
* For Tape & Reel, add suffix –Z (e.g. MP2303ADN–Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP2303ADN–LF–Z)
** For Tape & Reel, add suffix –Z (e.g. MP2303ADP–Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP2303ADP–LF–Z)
PACKAGE REFERENCE
TOP VIEW
BS
IN
SW
GND
1
2
3
4
8 SS
7 EN
6 COMP
5 FB
TOP VIEW
BS 1
IN 2
SW 3
GND 4
8 SS
7 EN
6 COMP
5 FB
MP2303A_PD01-PDIP8
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN ........................-0.3V to +30V
Switch Voltage VSW .................. -1V to VIN + 0.3V
Boost Voltage VBS .......... VSW - 0.3V to VSW + 6V
All Other Pins ..................................-0.3V to +6V
Junction Temperature ...............................150°C
Continuous Power Dissipation (TA =
+25°C)(2)
SOIC8E...................................................... 2.5W
PDIP8 ........................................................ 1.2W
Lead Temperature ....................................260°C
Storage Temperature .............. -65°C to +150°C
Recommended Operating Conditions (3)
Input Voltage VIN ..............................4.7V to 28V
Output Voltage VOUT.......................0.80V to 25V
Maximum Junction Temp. (TJ) ................ +125°C
Thermal Resistance (4) θJA θJC
SOIC8E .................................. 50 ...... 10... C/W
PDIP8 .................................... 105 ..... 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..
MP2303A Rev.1.1
www.MonolithicPower.com
7/25/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
2


Part Number MP2303A
Description 360kHz Synchronous Rectified Step-Down Converter
Maker MPS
Total Page 15 Pages
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