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MP8675DN датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP8675DN
подробное описание детали  6A, 42V, 420kHz Step-Down Converter with Synchronizable Gate Driver
PDF  11 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8675DN датащи(HTML) 3 Page - Monolithic Power Systems

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MP8675 – 6A, 42V, 420KHZ STEP-DOWN WITH SYNCHRONIZABLE GATE DRIVER
MP8675 Rev.1.2
www.MonolithicPower.com
3
1/26/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V
≤ VIN ≤ 42V
0.788
0.808
0.828
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On Resistance
(5)
RDS(ON)
100
mΩ
Switch Leakage
VEN = 0V, VSW = 0V
0.1
10
µA
Current Limit
5)
7.5
8.0
A
Oscillator Frequency
fSW
VFB = 0.6V
240
420
600
kHz
Fold-back Frequency
VFB = 0V
25
115
205
kHz
Maximum Duty Cycle
VFB = 0.6V
85
90
%
Minimum On Time
(5)
tON
100
ns
Under Voltage Lockout Threshold Rising
3.90
4.10
4.30
V
Under Voltage Lockout Threshold Hysteresis
880
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
2
V
VEN = 2V
2
EN Input Current
VEN = 0V
0.1
µA
Sync Frequency Range (Low)
FSYNCL
300
kHz
Sync Frequency Range (High)
FSYNCH
1.5
MHz
Enable Turnoff Delay
TOFF
5.0
µs
Supply Current (Shutdown)
VEN = 0V
1
10
µA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
0.9
1.1
mA
Thermal Shutdown
150
°C
BG Driver Bias Supply Voltage
VCC
ICC = 5mA
4.5
5.0
V
Gate Driver Sink Impedance
(5)
RSINK
1
Ω
Gate Driver Source Impedance
(5)
RSOURCE
4
Ω
Gate Drive Current Sense Trip Threshold
VSW
20
mV
Note:
5) Guaranteed by design.



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