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MP2497DN Arkusz danych(PDF) 3 Page - Monolithic Power Systems

Numer części MP2497DN
Szczegółowy opis  3A, 50V, 100kHz Step-Down Converter with Programmable Output OVP Threshold
PDF  14 Pages
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Producent  MPS [Monolithic Power Systems]
Strona internetowa  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2497DN Arkusz danych(HTML) 3 Page - Monolithic Power Systems

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MP2497 – 3A, 50V, 100kHz STEP-DOWN CONVERTER
MP2497 Rev. 1.12
www.MonolithicPower.com
3
12/22/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V
≤ VIN ≤ 50V
0.78
0.8
0.82
V
Feedback Bias Current
IBIAS(FB)
VFB = 0.8V
10
nA
Output
Over
Voltage
Reference
VOVREF
TA=-40°C to +85°C
1.10
1.23
1.36
V
Input Bias Current (OVP)
IBIAS(OVP)
VOVP=1.23V
0.1
μA
Switch On Resistance
RDS(ON)
0.15
Ω
Switch Leakage
VOVP = 2V, VSW = 0V
0.1
10
μA
Current Limit
Duty Cycle=10%
5
A
Oscillator Frequency
fSW
VFB = 0.6V
80
100
120
kHz
Boot-Strap Voltage
VBST - VSW
4.5
V
Minimum On Time
tON
100
ns
SW Rising Edge
tRISE
50
ns
SW Falling Edge
tFALL
50
ns
Under Voltage Lockout Threshold
Rising
2.9
3.4
3.9
V
Under Voltage Lockout Threshold
Hysteresis
200
mV
Load
Line
Compensation
Gain
GLLC
VISP-VISN=100mV, check IFB
15
20
25
μA/V
Current Sense Voltage
VISP –VISN VISP, VISN 0.5–15V
90
100
110
mV
Input Bias Current (ISN, ISP)
IBIAS (ISN,ISP) VISP, VISN 0.5–15V
-1
-0.5
+1
μA
Supply Current (Quiescent)
VOVP = 0V, VFB = 1V
1.2
1.5
mA
Thermal Shutdown
150
°C
Thermal Shutdown Hysteresis
30
°C



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