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MP2560 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part No. MP2560
Description  2.5A, 4MHz, 42V Step-Down Converter
Download  19 Pages
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Maker  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
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MP2560 Datasheet(HTML) 3 Page - Monolithic Power Systems

 
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MP2560 – 2.5A, 4MHz, 42V STEP-DOWN CONVERTER
MP2560 Rev. 1.2
www.MonolithicPower.com
3
1/25/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2.5V, VCOMP = 1.4V, TA= +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V < VIN < 42V
0.776
0.8
0.824
V
Upper Switch On Resistance
RDS(ON)
VBST – VSW = 5V
220
mΩ
Upper Switch Leakage
VEN = 0V, VSW = 0V, VIN = 42V
1
µA
Current Limit
Duty Cycle = 50%
2.9
3.5
A
COMP to Current Sense
Transconductance
GCS
8
A/V
Error Amp Voltage Gain
200
V/V
Error Amp Transconductance
ICOMP = ±3µA
40
60
80
µA/V
Error Amp Min Source current
VFB = 0.7V
5
µA
Error Amp Min Sink current
VFB = 0.9V
–5
µA
VIN UVLO Threshold
2.7
3.0
3.3
V
VIN UVLO Hysteresis
0.4
V
Soft-Start Time
10% < VOUT < 90%
1.3
(5)
ms
RFREQ = 45kΩ
1.6
2
2.4
MHz
Oscillator Frequency
RFREQ = 18kΩ
3.2
4
4.8
MHz
Shutdown Supply Current
VEN = 0V
12
20
µA
Quiescent Supply Current
No load, VFB = 0.9V
120
145
µA
Thermal Shutdown
150
°C
Thermal Shutdown Hysteresis
15
°C
Minimum Off Time
(6)
100
ns
Minimum On Time
(6)
100
ns
EN Up Threshold
1.3
1.5
1.7
V
EN Threshold Hysteresis
300
mV
Note:
5) The Soft-Start Time is measured based on VOUT from 10% to 90% and multiplied by 1.25 to get 0% to 100% Soft-Start Time.
6) Guaranteed by design.


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