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MP4423 датащи(PDF) 4 Page - Monolithic Power Systems

номер детали MP4423
подробное описание детали  High Efficiency 3A, 36V, Synchronous Step Down Converter
PDF  18 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP4423 датащи(HTML) 4 Page - Monolithic Power Systems

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MP4423 – 36V, 3A SYNCHRONOUS STEP-DOWN CONVERTER
MP4423 Rev. 1.0
www.MonolithicPower.com
4
8/18/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = +25°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
ISHDN
VEN = 0V
8
μA
Supply Current (Quiescent)
IQ
VEN = 2V, VFB = 1V
0.5
0.7
mA
HS Switch-ON Resistance
RON_HS
VBST-SW=5V
85
105
mΩ
LS Switch-ON Resistance
RON_LS
VCC =5V
55
75
mΩ
Switch Leakage
ILKG SW
VEN = 0V, VSW =12V
1
μA
Current Limit
ILIMIT
Under 40% Duty Cycle
3.2
4.4
5.5
A
Oscillator Frequency
fSW
VFB=750mV
320
410
500
kHz
Fold-Back Frequency
fFB
VFB<400mV
70
100
130
kHz
Maximum Duty Cycle
DMAX
VFB=750mV, 410kHz
92
95
%
Minimum ON Time
(5)
tON MIN
70
ns
Sync Frequency Range
fSYNC
0.2
2.4
MHz
Feedback Voltage
VFB
780
792
804
mV
Feedback Current
IFB
VFB=820mV
10
100
nA
EN Rising Threshold
VEN RISING
1.15
1.4
1.65
V
EN Falling Threshold
VEN_FALLING
1.05
1.25
1.45
V
EN Threshold Hysteresis
VEN_HYS
150
mV
EN Input Current
IEN
VEN=2V
4
6
μA
VEN=0
0
0.2
μA
VIN Under-Voltage Lockout
Threshold-Rising
INUVRISING
3.3
3.5
3.7
V
VIN Under-Voltage Lockout
Threshold-Falling
INUVFALLING
3.1
3.3
3.5
V
VIN Under-Voltage Lockout
Threshold-Hysteresis
INUVHYS
200
mV
VCC Regulator
VCC
ICC=0mA
4.6
4.9
5.2
V
VCC Load Regulation
ICC=5mA
1.5
4
%
Soft-Start Period
tSS
VOUT from 10% to 90%
0.45
1. 5
2.55
ms
Thermal Shutdown
(5)
150
170
°C
Thermal Hysteresis
(5)
30
°C
PG Rising Threshold
PGVth RISING
as percentage of VFB
86
90
94
%
PG Falling Threshold
PGVth FALLING
as percentage of VFB
80
84
88
%



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