MP2361
2A, 23V, 1.4MHz
Step-Down Converter
MP2361 Rev. 1.4 www.MonolithicPower.com 1
9/22/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2361 is a monolithic step-down switch
mode converter with a built-in internal power
MOSFET. It achieves 2A continuous output
current over a wide input supply range with
excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protections include cycle-by-cycle
current limiting and thermal shutdown. In
shutdown mode the regulator draws 20μA of
supply current. Programmable soft-start
minimizes the inrush supply current and the
output overshoot at initial startup.
The MP2361 requires a minimum number of
readily available standard external components.
FEATURES
2A Output Current
0.18 Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
90% Efficiency
20μA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.75V to 23V Operating Input Range
Output Adjustable from 0.92V to 16V
Programmable Under Voltage Lockout
Available in QFN10, MSOP10, MSOP10E,
and SOIC8 Packages
APPLICATIONS
Distributed Power Systems
Battery Charger
DSL Modems
Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2361
SW
IN BS
42
FB
5
7
SS
COMPGND
86
EN
10
9
V
OUT
2.5V/2A
INPUT
4.75V to 23V
MP2361_TAC_S01
C5
10nF
C3
1.8nF
C4
10nF
D1
B220A
C6
OPEN
V
OUT
=5V
V
OUT
=2.5V
V
OUT
=3.3V
100
90
80
70
60
50
EFFICIENCY (%)
0 2.00.5 1.0 1.5
LOAD CURRENT (A)
MP2361-EC01
Efficiency vs
Load Current
MP2361 – 2A, 23V, 1.4MHz STEP-DOWN CONVERTER
MP2361 Rev. 1.4 www.MonolithicPower.com 2
9/22/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MP2361DQ*
QFN10 (3mm x 3mm)
C8
–40°C to +85°C
MP2361DH**
MSOP10E
2361D
–40°C to +85°C
MP2361DK***
MSOP10
2361D
–40°C to +85°C
MP2361DS****
SOIC8
MP2361DS
–40°C to +85°C
*For Tape & Reel, add suffix –Z (eg. MP2361DQ–Z);
For RoHS, compliant packaging, add suffix –LF (eg. MP2361DQ –LF–Z)
** For Tape & Reel, add suffix –Z (eg. MP2361DH–Z);
For RoHS, compliant packaging, add suffix –LF (eg. MP2361DH –LF–Z)
*** For Tape & Reel, add suffix –Z (eg. MP2361DK–Z);
For RoHS, compliant packaging, add suffix –LF (eg. MP2361DK –LF–Z)
**** For Tape & Reel, add suffix –Z (eg. MP2361DS–Z);
For RoHS, compliant packaging, add suffix –LF (eg. MP2361DS –LF–Z)
PACKAGE REFERENCE
TOP VIEW
NC
BS
NC
IN
SW
1
2
3
4
5
SS
EN
COMP
FB
GND
10
9
8
7
6
EXPOSED PAD
ON BACKSIDE
EXPOSED PAD
ON BACKSIDE
Connect to GND
NC
BS
NC
IN
SW
1
2
3
4
5
10
9
8
7
6
SS
EN
COMP
FB
GND
TOP VIEW
NC
BS
NC
IN
SW
1
2
3
4
5
10
9
8
7
6
SS
EN
COMP
FB
GND
TOP VIEW
BS
VIN
VSW
GND
SS
EN
COMP
FB
1
2
3
4
8
7
6
5
TOP VIEW
QFN10
(3mm x 3mm)
MSOP10E MSOP10 SOIC8
MP2361 – 2A, 23V, 1.4MHz STEP-DOWN CONVERTER
MP2361 Rev. 1.4 www.MonolithicPower.com 3
9/22/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage (V
IN
)..................................... 25V
Switch Node Voltage (V
SW
) .......................... 26V
Bootstrap Voltage (V
BS
) ....................... V
SW
+ 6V
Feedback Voltage (V
FB
) .................–0.3V to +6V
Enable/UVLO Voltage (V
EN
)...........–0.3V to +6V
Comp Voltage (V
COMP
) ...................–0.3V to +6V
Continuous Power Dissipation (T
A
= +25°C)
(2)
QFN10 (3mmx3mm) .................................. 2.5W
MSOP10 .................................................. 0.83W
MSOP10E.................................................. 2.3W
SOIC8 ...................................................... 1.38W
Junction Temperature.............................+150°C
Lead Temperature ..................................+260°C
Storage Temperature.............. –65°C to +150°C
Recommended Operating Conditions
(3)
Supply Voltage (V
IN
).......................4.75V to 23V
Operating Junct. Temp (T
J
).... –40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
QFN10 (3mmx3mm)............... 50 ...... 12... °C/W
MSOP10 ................................ 150..... 65... °C/W
MSOP10E .............................. 55 ...... 12... °C/W
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 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 PCB.

MP2361DQ-LF-P

Mfr. #:
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 2A 23V 1.45MHz Step-Down Converter
Lifecycle:
New from this manufacturer.
Delivery:
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