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MP4432GL 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP4432GL
功能描述  36V, 2.2A, Low Quiescent Current, Synchronous, Step-Down Converter
PDF  29 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP4432GL 数据表(HTML) 4 Page - Monolithic Power Systems

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MP4432 - 36V, 2.2A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER
MP4432 Rev. 1.01
www.MonolithicPower.com
4
1/12/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2V, TJ = -40°C to +125°C
(4), unless otherwise noted. Typical values are at T
J =
+25°C.
Parameter
Symbol
Condition
Min
Typ
Max
Units
VIN quiescent current
IQ
VFB = 0.85V, no load, no switching,
TJ = +25°C
10
18
µA
VFB = 0.85V, no load, no switching
10
25
VIN shutdown current
ISHDN
VEN = 0V
1
5
µA
VIN under-voltage lockout
threshold rising
INUVRISING
2.4
2.8
3.2
V
VIN under-voltage lockout
threshold hysteresis
INUVHYS
150
mV
Feedback reference voltage
VREF
784
800
816
mV
TJ = 25°C
792
800
808
mV
Switching frequency
FSW
RFREQ = 180kΩ or from sync clock
400
475
550
kHz
RFREQ = 82kΩ or from sync clock
850
1000
1150
kHz
RFREQ = 27kΩ or from sync clock
2250
2500
2750
kHz
Minimum on time
(5)
TON_MIN
80
ns
Sync input low voltage
VSYNC_LOW
0.4
V
Sync input high voltage
VSYNC_HIGH
1.8
V
Current limit
ILIMIT_HS
Duty cycle = 40%
4.1
5.2
6.7
A
Low-side valley current limit
ILIMIT_LS
VOUT = 3.3V, L = 4.7µH
2.5
3.8
5.1
A
ZCD current
IZCD
0.1
A
Reverse current limit
ILIMIT_REVERSE
3
A
Switch leakage current
ISW_LKG
0.01
1
µA
HS switch on resistance
RON_HS
VBST - VSW = 5V
90
155
mΩ
LS switch on resistance
RON_LS
40
75
mΩ
Soft-start current
ISS
VSS = 0.8V
5
10
15
µA
EN rising threshold
VEN_RISING
0.9
1.05
1.2
V
EN threshold hysteresis
VEN_HYS
120
mV
PG rising threshold (VFB/VREF)
PGRISING
VFB rising
85
90
95
%
VFB falling
105
110
115
PG falling threshold (VFB/VREF)
PGFALLING
VFB falling
79
84
89
%
VFB rising
113.5
118.5
123.5
%
PG deglitch timer
TPG_DEGLITCH
PG from low to high
30
µs
PG from high to low
50
µs
PG output voltage low
VPG_LOW
ISINK = 2mA
0.2
0.4
V
VCC regulator
VCC
5
V
VCC load regulation
ICC = 5mA
3
%
Thermal shutdown
(5)
TSD
170
C
Thermal shutdown hysteresis
(5)
TSD_HYS
20
°C
NOTE:
4) Not tested in production and guaranteed by over-temperature correlation.
5) Not tested in production. Guaranteed by design and characterization.



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