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MP8864 датащи(PDF) 4 Page - Monolithic Power Systems

номер детали MP8864
подробное описание детали  High-Efficiency, 4 A, 21 V, Synchronous Step-Down Converter with I2C Interface
PDF  29 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8864 датащи(HTML) 4 Page - Monolithic Power Systems

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MP8864
– SYNCHRONOUS STEP-DOWN CONVERTER
MP8864 Rev. 1.02
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 =12 V, TJ = -40°C to 125°C (7), unless otherwise noted, the typical value is based on the
average value when TJ=25oC.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply current (shutdown)
IIN
VEN = 0 V, TJ=25°C
5
μA
Supply current (quiescent)
Iq
VEN = 2 V, No switching,
PFM mode
500
760
μA
HS switch-on resistance
HSRDS-ON
VBST-SW=5 V
50
mΩ
LS switch-on resistance
LSRDS-ON
VCC =5 V
23
mΩ
Switch leakage
SWLKG
VEN = 0 V, VSW =12 V
1
μA
Current limit (8)
ILIMIT
Under 40% Duty cycle
5.5
7.5
A
Default oscillator frequency
fSW
VFB=500 mV
480
600
680
kHz
Foldback frequency
fFB
VFB=250 mV
0.5
fSW
Maximum duty cycle
DMAX
VFB=500 mV
90
95
%
Minimum on time(8)
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=1.2 V
TJ = 25°C
1188
1200
1212
mV
VOUT=1.2 V
TJ = -40°C to 125°C
1182
1200
1218
mV
FB current
IOUT
VFB=620 mV
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=2 V
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=5 mA
1.5
%
Power good threshold rising
PGVth-Hi
VREF=600 mV
0.9
VOUT
Power good threshold falling
PGVth-Lo
VREF=600 mV
0.7
VOUT
Power good deglitch time (8)
PGTd
80
µs
Soft-start current
ISS
6
12
18
μA
Thermal shutdown (8)
TTSD
160
°C
Thermal hysteresis (8)
TTSD_HYS
20
°C
DAC resolution(8)
DAC
7
bits
NOTES:
7) Not tested in production and guaranteed by over-temperature correlation.
8) Guaranteed by design and characterization test.



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