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MPS

MP2380 Datasheet Preview

MP2380 Datasheet

Step-Down Converter

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The Future of Analog IC Technology
DESCRIPTION
The MP2380 is a monolithic step-down switch
mode converter with a built in high-side power
MOSFET. It achieves 5A 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 MP2380 requires a minimum number of
readily available standard external components
and is available in an 8-pin SOIC package with
exposed pad.
MP2380
5A, 21V, 600KHz
Step-Down Converter
FEATURES
Wide 4.5V to 21V Operating Input Range
5A Continuous Output Current
45mInternal Power MOSFET Switch
Power Good Indicator
Fixed 600KHz Frequency
Synchronizable Up to 1.5 MHz
Cycle-by-Cycle Over Current Protection
Thermal Shutdown
Output Adjustable from 0.8V
Stable with Low ESR Output Ceramic
Capacitors
Available in a Thermally Enhanced 8-Pin
SOIC Package
APPLICATIONS
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
VIN
8
IN
2
BST
POWER
GOOD
3
VCC
1
MP2380 SW
6
PG
D1
B530C
OFF ON
VCC
7
EN/SYNC
GND
4
5
FB
VOUT
3.3V @ 5A
Efficiency vs
Output Current
100
95 VIN=4.5V
90
85
80 VIN=12V
75
70
65
60
55 VOUT=3.3V
50
1 2 34
OUTPUT CURRENT (A)
5
MP2380 Rev.1.2
5/26/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
1




MPS

MP2380 Datasheet Preview

MP2380 Datasheet

Step-Down Converter

No Preview Available !

MP2380 – 5A, 21V, 600KHz STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
SW
BST
VCC
GND
1
2
3
4
8 IN
7 EN/SYNC
6 PG
5 FB
EXPOSED PAD
ON BACKSIDE
Part Number* Package
Temperature
MP2380DN
SOIC8E
–40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2380DN–Z)
For RoHS Compliant Packaging, add suffix –LF
(e.g. MP2380DN–LF–Z)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN....................................... 23V
VSW............................................................... 24V
VBST -VSW........................................................ 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 VIN........................... 4.5V to 21V
Operating Temperature .............–40°C to +85°C
Thermal Resistance (3) θJA θJC
SOIC8E .................................. 50 ...... 10... °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
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Feedback Voltage
VFB
Feedback Current
Switch On Resistance (4)
Switch Leakage
Current Limit (4)
Oscillator Frequency
Fold-back Frequency
Maximum Duty Cycle
Minimum On Time
Under Voltage Lockout Threshold Rising
Under Voltage Lockout Threshold Hysteresis
EN Input Low Voltage
En Input High Voltage
IFB
RDS(ON)
fSW
tON
EN Input Current
Sync Frequency Range (Low)
Sync Frequency Range (High)
Enable Turnoff Delay
Supply Current (Shutdown)
Supply Current (Quiescent)
Thermal Shutdown
Power Good Control
Power Good Threshold Rising
Power Good Threshold Hysteresis
PG Pin Level
Note:
4) Guaranteed by design.
FSYNCL
FSYNCH
TOFF
VPG
Condition
4.5V VIN 21V
VFB = 0.8V
VFB = 2V
VEN = 0V, VSW = 0V
VFB = 0.6V
VFB = 0V
VFB = 0.6V
VEN = 2V
VEN = 0V
VEN = 0V
VEN = 2V, VFB = 1V
PG Sink 4mA
Min
0.788
6.5
400
60
85
3.9
1.2
0.69
Typ
0.808
10
2
45
0
7.3
600
150
90
100
4.1
880
2
0
300
1.5
5.0
0.9
150
0.74
40
Max
0.828
75
25
800
240
4.3
0.4
25
1.1
Units
V
nA
µA
m
µA
A
KHz
KHz
%
ns
V
mV
V
V
µA
KHz
MHz
us
µA
mA
°C
0.79
0.4
V
mV
V
MP2380 Rev.1.2
5/26/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
2


Part Number MP2380
Description Step-Down Converter
Maker MPS
Total Page 11 Pages
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