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MP2359DT Datasheet Preview

MP2359DT Datasheet

Step-Down Converter

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MP2359
1.2A, 24V, 1.4MHz
Step-Down Converter in a TSOT23-6
The Future of Analog IC Technology
R DESCRIPTION
The MP2359 is a monolithic step-down switch
O mode converter with a built-in power MOSFET.
It achieves 1.2A peak output current over a
F wide input supply range with excellent load and
line regulation. Current mode operation
provides fast transient response and eases loop
D stabilization. Fault condition protection includes
cycle-by-cycle current limiting and thermal
E shutdown.
The MP2359 requires a minimum number of
D S readily available standard external components.
H The MP2359 is available in TSOT23-6 and
EN N 1 SOT23-6 packages.
M IG 3 EVALUATION BOARD REFERENCE
Board Number
OM ES P23 EV2359DJ-00B
Dimensions
2.1”X x 1.9”Y x 0.4”Z
FEATURES
1.2A Peak Output Current
0.35Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 92% Efficiency
0.1μA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.5V to 24V Operating Input Range
Output Adjustable from 0.81V to 15V
Available in TSOT23-6 and SOT23-6
Packages
APPLICATIONS
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
WLED Drivers
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
EC W D O M TYPICAL APPLICATION
T R NE R T VIN
12V
NO REFE OFF ON
5
IN
1
BST
CB
10nF
6
SW
MP2359
D1
B230A
4
EN
GND
2
3
FB
VOUT
3.3V @ 1.2A
Efficiency vs
Load Currents
100
VIN = 12V
90
80
70
VIN = 24V
60
50
40
30
20
10
VOUT = 5V
0
0.01
0.1
1
10
LOAD CURRENT (A)
MP2359 Rev. 1.21
www.MonolithicPower.com
1
7/18/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.




MPS

MP2359DT Datasheet Preview

MP2359DT Datasheet

Step-Down Converter

No Preview Available !

MP2359 – 1.2A, 24V, 1.4MHz STEP-DOWN CONVERTER IN A TSOT23-6
ORDERING INFORMATION
Part Number
MP2359DJ*
R MP2359DT**
Package
TSOT23-6
SOT23-6
Top Marking
F8
J6
Free Air Temperature (TA)
-40°C to +85°C
-40°C to +85°C
*For Tape & Reel, add suffix –Z (eg. M2359DJ–Z);
O For RoHS compliant packaging, add suffix –LF (eg. MP2359DJ–LF–Z)
**For Tape & Reel, add suffix –Z (eg. M2359DT–Z);
F For RoHS compliant packaging, add suffix –LF (eg. MP2359DT–LF–Z)
D PACKAGE REFERENCE
E TOP VIEW
D S H BST 1
6 SW
EN N 1 GND 2
5 IN
M IG 3 FB 3
4 EN
OM DES MP23 ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN ....................................... 26V
C VSW............................................................... 27V
E W O VBS ....................................................... VSW + 6V
All Other Pins ..................................-0.3V to +6V
R E T Continuous Power Dissipation (TA = +25°C) (2)
TSOT23-6 .............................................. 0.568W
SOT23-6 ................................................ 0.568W
T N R Junction Temperature...............................150°C
Lead Temperature ....................................260°C
O E Storage Temperature............... -65°C to +150°C
N F Recommended Operating Conditions (3)
Supply Voltage VIN ...........................4.5V to 24V
E Output Voltage VOUT.......................0.81V to 15V
Ambient Temperature ................ -40°C to +85°C
R Max input current into the EN pin............. 300μA
Thermal Resistance (4) θJA θJC
TSOT23-6.............................. 220 .... 110.. °C/W
SOT23-6 ................................ 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 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 function is not guaranteed outside of the
recommended operating conditions.
4) Measured on JESD51-7, 4-layer PCB..
MP2359 Rev. 1.21
www.MonolithicPower.com
2
7/18/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.


Part Number MP2359DT
Description Step-Down Converter
Maker MPS
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MP2359DT Datasheet PDF






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