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MP1497S Scheda tecnica(PDF) 3 Page - Monolithic Power Systems

Il numero della parte MP1497S
Spiegazioni elettronici  High-Efficiency, 3A, 16V, 500kHz Synchronous, Step-Down Converter
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Produttore elettronici  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

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MP1497S – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP1497S Rev. 1.01
www.MonolithicPower.com
3
9/7/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V
1
μA
Supply Current (Quiescent)
Iq
VEN = 2V, VFB = 1V
0.7
1
mA
HS-Switch ON Resistance
HSRDS-ON VBST-SW=5V
120
mΩ
LS-Switch ON Resistance
LSRDS-ON VCC=5V
50
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW =12V
1
μA
Current Limit
(6)
ILIMIT
Under 40% Duty Cycle
4.2
5
A
Oscillator Frequency
fSW
VFB=750mV
410
500
600
kHz
Fold-back Frequency
fFB
VFB<400mV
0.5
fSW
Maximum Duty Cycle
DMAX
VFB=700mV
90
95
%
Minimum ON Time
(7)
τON_MIN
60
ns
Sync Frequency Range
fSYNC
0.3
2
MHz
TA=25°C
791
807
823
Feedback Voltage
VFB
-40°C<TA<85°C
(8)
787
807
827
mV
Feedback Current
IFB
VFB=820mV
10
50
nA
EN Rising Threshold
VEN_RISING
1.1
1.4
1.75
V
EN Falling Threshold
VEN_FALLING
1
1.25
1.55
V
VEN=2V
2
μA
EN Input Current
IEN
VEN=0
0
μA
EN Turn Off Delay
ENTd-off
8
μs
VIN Under-Voltage Lockout
Threshold-Rising
INUVVth
3.6
3.9
4.2
V
VIN Under-Voltage Lockout
Threshold-Hysteresis
INUVHYS
650
mV
VCC Regulator
VCC
5
V
VCC Load Regulation
ICC=5mA
3
%
Soft-Start Current
ISS
5
11
17
μA
Thermal Shutdown
(7)
150
°C
Thermal Hysteresis
(7)
20
°C
Notes:
6) Guaranteed by characterization.
7) Guaranteed by design.
8) Not tested in production and guaranteed by over-temperature correlation.


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