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MP2360DG-LF-Z

P1-P3P4-P6P7-P9
MP2360
1.8A, 24V, 1.4MHz
Step-Down Converter
MP2360 Rev. 0.91 www.MonolithicPower.com 1
5/19/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2360 is a monolithic step-down switch
mode converter with a built-in internal power
MOSFET. It achieves 1.8A 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
protection includes cycle-by-cycle current limiting
and thermal shutdown.
The MP2360 requires a minimum number of
readily available standard external components.
The MP2360 is available in a 2mm x 2mm QFN8
package.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV2360DG-00B 1.8”X x 1.6”Y x 0.4”Z
FEATURES
• 2.5A Peak Output Current
• 1.8A Continuous Output Current
• 0.3 Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• 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 2x2 QFN8 Packages
APPLICATIONS
• Broadband Communications Equipment
• Digital Entertainment Systems
• Distributed Power Systems
• Battery Charger
• Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2360
SW
FB
BST
3
4
6
5
2
7
GND
IN
EN
V
OUT
3.3V
CB
10nF
D1
B230A
V
IN
OFF ON
100
90
80
70
60
50
EFFICIENCY (%)
0 0.5 1.0 1.5 2.0
LOAD CURRENT (A)
Efficiency vs
Load Current
V
OUT
= 2.5V
V
OUT
= 3.3V
V
IN
= 12V
MP2360 – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER
MP2360 Rev. 0.91 www.MonolithicPower.com 2
5/19/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
PACKAGE REFERENCE
Part Number* Package Temperature
MP2360DG 2x2 QFN8
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP2360DG–Z)
For RoHS compliant packaging, add suffix –LF (eg.
MP2360DG–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
IN
....................................... 26V
V
SW
....................................... –0.3V to V
IN
+ 0.3V
V
BS
....................................................... V
SW
+ 6V
All Other Pins................................. –0.3V to +6V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ..............–65°C to +150°C
Recommended Operating Conditions
(2)
Supply Voltage V
IN
........................... 4.5V to 24V
Output Voltage V
OUT
...................... 0.81V to 15V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
2x2 QFN8 ............................... 80 ...... 16... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
V
IN
= 12V, T
A
= +25°C, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Units
Feedback Voltage V
FB
4.5V ≤ V
IN
≤ 24V
0.790 0.810 0.830 V
Feedback Current I
FB
V
FB
= 0.8V 10 nA
Switch On-Resistance
(4)
R
DS(ON)
0.3
Switch Leakage V
EN
= 0V, V
SW
= 0V 0 10 µA
Current Limit
(4)
Duty Cycle = 40% 2.0 2.5 A
Oscillator Frequency f
SW
V
FB
= 0.6V 1.4 MHz
Fold-back Frequency V
FB
= 0V 460 KHz
Maximum Duty Cycle V
FB
= 0.6V 87 %
Minimum On-Time
(4)
t
ON
100 ns
Under-Voltage Lockout Threshold Rising 2.5 2.8 3.1 V
Under-Voltage Lockout Threshold Hysteresis 150 mV
EN Input Low Voltage 0.4 V
EN Input High Voltage 1.2 V
V
EN
= 2V 2.1
EN Input Current
V
EN
= 0V 0.01
µA
Supply Current (Shutdown) V
EN
= 0V 0.1 1.0 µA
Supply Current (Quiescent) V
EN
= 2V, V
FB
= 1V 0.8 1.0 mA
Thermal Shutdown
(4)
150 °C
Note:
4) Guaranteed by design.
QFN8
(2mm x 2mm)
TOP VIEW
NC
SW
IN
EN
1
2
3
4
NC
BST
GND
FB
8
7
6
5
MP2360 – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER
MP2360 Rev. 0.91 www.MonolithicPower.com 3
5/19/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1, 8 NC No Connect.
2 SW Switch Output.
3 IN
Supply Voltage. The MP2360 operates from a +4.5V to +24V unregulated input. C1 is needed
to prevent large voltage spikes from appearing at the input.
4 EN On/Off Control Input. Pull above 1.2V to turn the device on.
5 FB
Feedback. An external resistor divider from the output to GND, tapped to the FB pin sets the
output voltage. To prevent current limit run away during a short circuit fault condition the
frequency foldback comparator lowers the oscillator frequency when the FB voltage is below
250mV.
6 GND
Ground. This pin is the voltage reference for the regulated output voltage. For this reason care
must be taken in its layout. This node should be placed outside of the D1 to C1 ground path to
prevent switching current spikes from inducing voltage noise into the part.
7 BST
Bootstrap. This capacitor is needed to drive the power switch’s gate above the supply voltage. It
is connected between SW and BST pins to form a floating supply across the power switch
driver.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 12V, V
OUT
= 3.3V, T
A
= +25°C, unless otherwise noted.
Efficiency vs
Load Currents
Current Limit vs
Duty Cycle
VOUT = 5V
V
OUT = 2.5V
VOUT = 12V
VIN = 24V
100
90
80
70
60
50
40
LOAD CURRENT (A)
EFFICIENCY (%)
CURRENT LIMIT (A)
100
90
80
70
60
50
40
EFFICIENCY (%)
0 1.00.5 1.5 2.0 2.5
LOAD CURRENT (A)
Efficiency vs
Load Current
VOUT = 5V
VOUT = 2.5V
V
IN = 12V
0 1.00.5 1.5 2.0 2.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
DUTY CYCLE (%)
04020 60 80 100
P1-P3P4-P6P7-P9

MP2360DG-LF-Z

Mfr. #:
Buy MP2360DG-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 1A 24V 1.4MHz Non-sync Buck
Lifecycle:
New from this manufacturer.
Delivery:
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