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MP9447 Datasheet(PDF) 4 Page - Monolithic Power Systems

No. de Pieza. MP9447
Descripción  High-Efficiency, Fast-Transient, 5A, 36V Synchronous, Step-Down Converter
Descarga  19 Pages
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Fabricante  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
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MP9447 Datasheet(HTML) 4 Page - Monolithic Power Systems

 
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MP9447–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER
MP9447 Rev. 1.2
www.MonolithicPower.com
4
1/5/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 24V, VEN = 2V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V
10
200
nA
Supply Current (Quiescent)
IIN
VFB = 0.95V
500
600
μA
HS Switch On Resistance
HSRDS-ON
65
75
mΩ
LS Switch On Resistance
(5)
LSRDS-ON
30
mΩ
Switch Leakage
SWLKG
VEN = 0V
VSW = 0V or 36V
10
200
nA
Current Limit
ILIMIT
6
8
A
One-Shot On Time
tON
VIN=12V,
RFREQ=30kΩ
230
280
330
ns
Minimum Off Time
(5)
tOFF
100
ns
Foldback Off Time
(5)
tFB
ILIM=1(HIGH),
VFB>50%VREF
4.8
μs
Foldback Off Time
(5)
tFB
ILIM=1(HIGH),
VFB<50%VREF
16.8
μs
OCP Hold-Off Time
(5)
tOC
ILIM=1(HIGH)
100
μs
Feedback Voltage
VFB
803
815
827
mV
Feedback Current
IFB
VFB = 815mV
10
50
nA
Soft-Start Charging Current
ISS
VSS=0V
6
8.5
11
μA
EN Rising Threshold
ENVth-Hi
1.0
1.25
1.4
V
EN Falling Threshold
ENVth-Lo
0.7
0.86
0.92
V
EN Threshold Hysteresis
ENVth-Hys
390
mV
EN Input Current
IEN
VEN = 2V
1.5
2
μA
VIN Under-Voltage Lockout
Threshold Rising
INUVVth
3.7
4.0
4.3
V
VIN Under-Voltage Lockout
Threshold Hysteresis
INUVHYS
880
mV
VCC Regulator
VCC
ICC=0
4.5
4.85
5.2
V
VCC Load Regulation
ICC=10mA
1
%
Thermal Shutdown
(5)
TSD
165
°C
Thermal Shutdown Hysteresis
(5)
TSD-HYS
25
°C
Note:
5) Derived from bench characterization, not tested in production.


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