EV2355DN-00A Ver la hoja de datos (PDF) - Monolithic Power Systems
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EV2355DN-00A Datasheet PDF : 10 Pages
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TM
MP2355 – 3A, 23V, 380KHz STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Enable Pull Up Current
EN UVLO Threshold
EN UVLO Threshold
Hysteresis
VRUN = 0V
VEN Rising
Soft-Start Period
Thermal Shutdown
CSS = 0.1µF
Note:
4) Equivalent output current = 1.5A ≥ 50% Duty Cycle
2.0A ≤ 50% Duty Cycle
Assumes ripple current = 30% of load current.
Slope compensation changes current limit above 40% duty cycle.
Min
Typ
Max Units
1.1
1.8
2.5
µA
2.37 2.54 2.71
V
210
mV
10
ms
150
°C
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit of Figure 2, VIN = 12V, VO = 3.3V, L1 = 15µH, C1 = 10µF, C2 = 22µF, TA = +25°C, unless
otherwise noted.
Heavy Load
Operation
3A Load
Light Load
Operation
No Load
VIN, AC
200mV/div.
VO, AC
20mV/div.
IL
1A/div.
VSW
10V/div.
VIN, AC
20mV/div.
VO, AC
20mV/div.
IL
1A/div.
VSW
10V/div.
Startup from Shutdown
No C4
3A Resistive Load
VEN
5V/div.
MP2355-TPC01
Startup from Shutdown
C4 = 10nF
3A Resistive Load
VEN
5V/div.
MP2355-TPC02
Startup from Shutdown
C4 = 10nF
No Load
VEN
5V/div.
VOUT
1V/div.
IL
1A/div.
VOUT
1V/div.
IL
1A/div.
MP2355-TPC03
VOUT
1V/div.
IL
1A/div.
MP2355-TPC04
MP2355-TPC05
MP2355 Rev. 1.5
www.MonolithicPower.com
3
5/1/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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