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MP2492DN Datasheet(PDF) 3 Page - Monolithic Power Systems

No. de pieza MP2492DN
Descripción Electrónicos  2A, 55V, 100kHz Step-Down Converter with Programmable Output Current Limit
PDF  11 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2492DN Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP2492 – 2A, 55V, 100kHz WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
MP2492 Rev. 1.0
www.MonolithicPower.com
3
12/20/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 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 ≤ 55V
0.78
0.8
0.82
V
Feedback Bias Current
IBIAS(FB)
VFB = 0.8V
10
nA
Switch On Resistance
RDS(ON)
0.25
Ω
Switch Leakage
(5)
VEN = 0V, VSW = 0V
0.1
10
µA
Current Limit
3.5
A
Oscillator Frequency
fSW
VFB = 0.6V
80
100
120
kHz
Boot-Strap Voltage
VBST - VSW
4.3
V
Minimum On Time
tON
VFB = 1V
100
ns
SW rising edge
trise
Vin=12V, Vo=5V, Io=2A
50
ns
SW falling edge
tfall
Vin=12V, Vo=5V, Io=2A
50
ns
Under Voltage Lockout Threshold
Rising
3.0
3.3
3.6
V
Under Voltage Lockout Threshold
Hysteresis
200
mV
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
500
800
µA
Thermal Shutdown
150
°C
Current Sense Voltage
VISP –VISN VISP, VISN 0.4–15V
90
100
110
mV
Input Bias Current (ISN, ISP)
IBIAS (ISN,ISP) VISP, VISN 0.4–15V
–1
–0.5
+1
µA
EN Input Low Voltage
(5)
0.4
V
En Input High Voltage
(5)
1.8
V
EN Input Bias Current
(5)
VEN = 0-6V
-10
-2
10
µA
PGOOD Sink Voltage
Dropout
Sink Current 5mA
0.3
V
Note:
4) Guaranteed by design
5) Only available for the MP2490DQ



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