MP1570 データシートの表示（PDF） - Monolithic Power Systems
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MP1570 Datasheet PDF : 11 Pages
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TM
MP1570 – 3A, 23V, 340KHz SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
EN Lockout Threshold Voltage
EN Lockout Hysteresis
Input Under Voltage Lockout
Threshold
VIN Rising
Input Under Voltage Lockout
Threshold Hysteresis
Soft-Start Current
Soft-Start Period
Thermal Shutdown (4)
VSS = 0V
CSS = 0.1µF
Note:
4) Guaranteed by design, not tested.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 3.3V, TA = +25°C, unless otherwise noted.
Load Transient
Waveforms
1A - 2A STEP
Min
Typ
Max Units
2.2
2.5
2.7
V
210
mV
3.80 4.05 4.30
V
210
mV
6
µA
20
ms
160
°C
VOUT
50mV/div.
VOUT
1V/div.
IL
1A/div.
MP1570-TPC01
IL
1A/div.
MP1570-TPC02
VOUT
1V/div.
IL
1A/div.
4ms/div.
MP1570-TPC03
IL
1A/div.
VOUT
10mV/div.
VIN
100mV/div.
VSW
10V/div.
MP1570-TPC04
MP1570 Rev. 1.5
www.MonolithicPower.com
3
1/31/2006
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© 2006 MPS. All Rights Reserved.
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