MP1430 Ver la hoja de datos (PDF) - Monolithic Power Systems
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MP1430 Datasheet PDF : 11 Pages
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MP1430 – 3A, 28V, 385KHz STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
EN Threshold Voltage
Enable Pull Up Current
Under Voltage Lockout
Threshold
VEN = 0V
VIN Rising
Under Voltage Lockout
Threshold Hysteresis
Soft Start Period
CSS = 0.1µF
Thermal Shutdown
Min
Typ
Max Units
0.9
1.2
1.5
V
1.0
1.7
2.5
µA
2.3
2.6
2.9
V
210
mV
10
ms
160
°C
TYPICAL PERFORMANCE CHARACTERISTICS
Refer to Typical Application Schematic on Page 1
Feedback Voltage vs
Temperature
1.245
1.235
1.225
1.215
1.205
1.195
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
MP1430-TPC01
Peak Current Limit vs
Temperature
5.0
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
-50 -25 -0 25 50 75 100 125 150
TEMPERATURE (°C)
MP1430-TPC02
Oscillation Frequency vs
Temperature
420
410
400
390
380
370
360
350
340
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
MP1430-TPC03
Load Transient
Waveforms
VIN = 12V, VOUT = 3.3V, 1A - 2A STEP
VOUT
1V/div.
VOUT
1V/div.
VOUT
100mV/div.
IL
1A/div.
IL
1A/div.
4ms/div.
MP1430-TPC04
IL
1A/div.
MP1430-TPC05
MP1430-TPC-06
MP1430 Rev. 1.0
11/1/2005
www.MonolithicPower.com
3
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