MP2359DT-LF-Z Datasheet, PDF (1/11 Pages) MPS Industries, Inc. – 1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6

The Future of Analog IC Technology
MP2359
1.2A, 24V, 1.4MHz
Step-Down Converter in a TSOT23-6
DESCRIPTION
The MP2359 is a monolithic step-down switch
mode converter with a built-in power MOSFET.
It achieves 1.2A peak 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 protection includes
cycle-by-cycle current limiting and thermal
shutdown.
The MP2359 requires a minimum number of
readily available standard external components.
The MP2359 is available in TSOT23-6 and
SOT23-6 packages.
EVALUATION BOARD REFERENCE
Board Number
EV2359DJ-00B
Dimensions
2.1”X x 1.9”Y x 0.4”Z
FEATURES
• 1.2A Peak Output Current
• 0.35Ω Internal 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.
TYPICAL APPLICATION
V_IN
12V
OFF ON
5
IN
1
BST
CB
10nF
6
SW
MP2359
D1
B230A
4
EN
GND
2
3
FB
V_OUT
3.3V @ 1.2A
Efficiency vs
Load Currents
100
VIN = 12V
90
80
70
VIN = 24V
60
50
40
30
20
10
0
0.01
VOUT = 5V
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.