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MP4473GL 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP4473GL
功能描述  High-Efficiency, Fast-Transient, 3.5A, 36V Synchronous, Step-Down Converter
PDF  21 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP4473GL 数据表(HTML) 4 Page - Monolithic Power Systems

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MP4473–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER
MP4473 Rev. 1.0
www.MonolithicPower.com
4
12/15/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 24V, VEN = 2V, TJ = 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
40
55
mΩ
LS Switch On Resistance
(5)
LSRDS-ON
20
mΩ
Switch Leakage
SWLKG
VEN = 0V
VSW = 0V or 36V
10
200
nA
Current Limit
ILIMIT
4.2
6.6
9
A
One-Shot On Time
tON
VIN=12V, RFREQ=30kΩ
230
280
330
ns
Minimum Off Time
(5)
tOFF
100
ns
Fold-Back Off Time
(5)
tFB
ILIM=1(HIGH),
FB>50%VREF
4.8
μs
Fold-Back Off Time
(5)
tFB
ILIM=1(HIGH),
FB<50%VREF
16.8
μs
OCP Hold-Off time
(5)
tOC
ILIM=1(HIGH)
100
μs
Feedback Voltage
VFB
TJ = 25°C
807
815
823
mV
Feedback Current
IFB
VFB = 815mV
10
50
nA
Soft-Start Charging Current
ISS
VSS=0V
6
8.5
11
μA
Power Good Rising Threshold
PGOODVth-Hi
0.87
0.9
0.93
VFB
Power Good Falling Threshold
PGOODVth-Lo
0.82
0.85
0.88
VFB
Power
Good
Threshold
Hysteresis
PGOODVth-Hys
0.05
VFB
Power Good Rising Delay
tPGOOD
500
700
900
μs
EN Rising Threshold
ENVth-Hi
1.0
1.2
1.4
V
EN Falling Threshold
ENVth-Lo
0.7
0.85
0.99
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_R
3.7
4.0
4.3
V
VIN Under-Voltage Lockout
Threshold Falling
INUVVth_F
2.8
3.1
3.4
V
VIN Under-Voltage Lockout
Threshold Hysteresis
INUVHYS
900
mV
VCC Regulator
VCC
ICC=0
4.5
4.85
5.2
V
VCC Load Regulation
ICC=10mA
1
2
%
Thermal Shutdown
(5)
TSD
175
°C
Thermal Shutdown Hysteresis
(5)
TSD-HYS
45
°C
Note:
5) Derived from bench characterization, not tested in production.



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