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MP8867 Fiches technique(PDF) 4 Page - Monolithic Power Systems

No de pièce MP8867
Description  High-Efficiency, 8A, 17V, Synchronous Step-Down Converter with I2C Interface
PDF  27 Pages
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Fabricant  MPS [Monolithic Power Systems]
Site Internet  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8867 Fiches technique(HTML) 4 Page - Monolithic Power Systems

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MP8867 – SYNCHRONOUS STEP-DOWN CONVERTER
MP8867 Rev.1.01
www.MonolithicPower.com
4
2/21/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to 125°C
(7), unless otherwise noted. Typical value is based on the average
value when TJ = 25
oC.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply current (shutdown)
IIN
VEN = 0V
9
13
μA
Supply current (quiescent)
Iq
VEN = 2V, no
switching, PFM mode
560
800
μA
HS switch-on resistance
HSRDS-ON
VBST-SW = 5V
30
mΩ
LS switch-on resistance
LSRDS-ON
VCC = 5V
15
mΩ
Switch leakage
SWLKG
VEN = 0V, VSW = 12V
or 0V, TJ = 25°C
1
μA
High-side current limit
(8)
ILIMIT_H
Under 40% duty
cycle
10
A
Oscillator frequency
fSW
TJ = 25°C
400
500
570
kHz
TJ = -40°C to 125°C
350
600
Foldback frequency
fVOUT
VFB = 150mV
0.5
fSW
SYNC frequency range
fSYNC
200
2000
kHz
Maximum duty cycle
DMAX
VFB = 500mV,
fs = 500kHz
93
95
%
Minimum on time
(8)
tON_MIN
40
ns
FB voltage
VFB
TJ = 25°C
594
600
606
mV
TJ = -40°C to 85°C
(8)
588
612
VOUT
VOUT=1.2V
TJ = 25°C
1188
1200
1212
mV
VOUT=1.2V
TJ = -40°C to 85°C
(8)
1182
1218
FB current
IFB
VFB = 620mV
10
50
nA
A0 high level
VADD H
2
V
A0 low level
VADD L
0.4
V
EN pull-up current
IEN_PU
VEN = 0V, TJ = 25°C
4.3
6.2
7.5
μA
VEN = 0V,
TJ = -40°C to 125°C
3.2
8
EN rising threshold
VEN_Rise
TJ = 25°C
1.28
1.4
1.5
V
TJ = -40°C to 125°C
1.26
1.52
EN hysteresis
VEN_HYS
TJ = 25°C
120
170
220
mV
TJ = -40°C to 125°C
100
240
EN turn-off delay
ENtd-off
10
μs
VIN under-voltage lockout
threshold rising
INUVVth
TJ = 25°C
4.04
4.2
4.36
V
TJ = -40°C to 125°C
4.02
4.38
VIN under-voltage lockout
threshold hysteresis
INUVHYS
560
660
740
mV
Power good UV threshold
rising
PGVth-Hi
TJ = 25°C
0.85
0.9
0.94
VOUT
TJ = -40°C to 125°C
0.84
0.95
Power good UV threshold
falling
PGVth-Lo
TJ = 25°C
0.64
0.7
0.73
VOUT
TJ = -40°C to 125°C
0.63
0.74



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