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MP8716 Datasheet(PDF) 3 Page - Monolithic Power Systems

No. de pieza MP8716
Descripción Electrónicos  High Efficiency 3A, 21V, 500kHz Synchronous Step-down Converter
PDF  14 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8716 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP8716 – SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP8716 Rev. 0.9
www.MonolithicPower.com
3
4/23/2010
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
Supply Current (Shutdown)
IIN
VEN = 0V
10
μA
Supply Current (Quiescent)
IQ
VEN = 2V, VFB = 1V
0.7
mA
HS Switch On Resistance
(5)
HSRDS-ON
120
mΩ
LS Switch On Resistance
(5)
LSRDS-ON
20
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW = 0V or
12V
0
10
μA
Current Limit
(5)
ILIMIT
6.1
A
Oscillator Frequency
FSW
VFB = 0.75V
425
500
575
kHz
Fold-back Frequency
FFB
VFB = 300mV
0.25
fSW
Maximum Duty Cycle
DMAX
VFB = 700mV
85
90
%
Sync Frequency Range
FSYNC
0.3
2
MHz
Feedback Voltage
VFB
TA = -20°C to + 85°C
789
805
821
mV
Feedback Current
IFB
VFB = 800mV
10
50
nA
EN Rising Threshold
VEN_RISING
1.1
1.3
1.6
V
EN Threshold Hysteresis
VEN_HYS
0.4
V
VEN = 2V
2
EN Input Current
IEN
VEN = 0V
0
μA
EN Turn Off Delay
ENTd-Off
5
μs
VIN
Under
Voltage
Lockout
Threshold Rising
INUVVth
3.8
4.0
4.2
V
VIN
Under
Voltage
Lockout
Threshold Hysteresis
INUVHYS
880
mV
VCC Regulator
VCC
5
V
VCC Load Regulation
ICC=2mA
5
%
Soft-Start Period
1.5
2
ms
Thermal Shutdown
TSD
150
°C
Note:
5) Guaranteed by design.



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