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MP8865 データシート(PDF) 4 Page - Monolithic Power Systems

部品番号 MP8865
部品情報  High-Efficiency, 6A, 21V, Synchronous Step-Down Converter with I2C Interface
PDF  29 Pages
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メーカー  MPS [Monolithic Power Systems]
ホームページ  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8865 データシート(HTML) 4 Page - Monolithic Power Systems

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MP8865
– SYNCHRONOUS STEP-DOWN CONVERTER
MP8865 Rev. 1.03
www.MonolithicPower.com
4
1/18/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to 125°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V, TJ=25°C
5
μA
Supply Current (Quiescent)
Iq
VEN = 2V, No Switching,
PFM Mode
500
760
μA
HS Switch-On Resistance
HSRDS-ON
VBST-SW=5V
45
mΩ
LS Switch-On Resistance
LSRDS-ON
VCC =5V
18
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW =12V
1
μA
Current Limit (7)
ILIMIT
Under 40% Duty Cycle
7.5
9.5
A
Default Oscillator Frequency
fSW
VFB=500mV
480
600
680
kHz
Foldback Frequency
fFB
VFB=250mV
0.5
fSW
Maximum Duty Cycle
DMAX
VFB=500mV
90
95
%
Minimum On Time(7)
tON_MIN
60
ns
Feedback Voltage
VREF
TJ =25°C
594
600
606
mV
VREF
TJ = -40°C to 125°C
588
600
612
mV
VOUT
VOUT=1.2V TJ = 25°C
1188
1200
1212
mV
VOUT=1.2V TJ = -40°C to 125°C
1182
1200
1218
mV
FB Current
IOUT
VFB=620mV
10
50
nA
EN Rising Threshold
VEN_Rise
1.2
1.4
1.6
V
EN Hysteresis
VEN_HYS
150
mV
EN Input Current
IEN
VEN=2V
2
μA
SYNC Frequency Range
fSYNC
0.3
2
MHz
ADD High Level
VADD_H
2
V
ADD Low Level
VADD_L
0.4
V
VIN Under-Voltage Lockout
Threshold-Rising
INUVVth
3.8
4
4.25
V
VIN Under-Voltage Lockout
Threshold-Hysteresis
INUVHYS
600
mV
VCC Regulator
VCC
5
V
VCC Load Regulation
ICC=5mA
1.5
%
Power Good Threshold Rising
PGVth-Hi VREF=600mV
0.9
VOUT
Power Good Threshold Falling
PGVth-Lo VREF=600mV
0.7
VOUT
Power Good Deglitch time (7)
PGTd
80
μs
Soft-Start Current
ISS
6
12
18
μA
Thermal Shutdown (7)
TTSD
160
°C
Thermal Hysteresis (7)
TTSD_HYS
20
°C
DAC Resolution(7)
DAC
7
Bits
Notes:
7) Guaranteed by design and characterization test.



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