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MP8666DN датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP8666DN
подробное описание детали  6A, 21V, 600kHz 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

MP8666DN датащи(HTML) 3 Page - Monolithic Power Systems

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MP8666 – 6A, 21V, 600kHz STEP-DOWN WITH SYNCHRONIZABLE GATE DRIVER
MP8666 Rev. 1.21
www.MonolithicPower.com
3
9/21/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 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 ≤ 21V
0.788
0.808
0.828
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On Resistance
(5)
RDS(ON)
45
mΩ
Switch Leakage
VEN = 0V, VSW = 0V
0
10
μA
Current Limit
(5)
7.5
8.0
A
Oscillator Frequency
fSW
VFB = 0.6V
400
600
800
KHz
Fold-back Frequency
VFB = 0V
60
150
240
KHz
Maximum Duty Cycle
VFB = 0.6V
85
90
%
Minimum On Time
(5)
tON
100
ns
Under Voltage Lockout Threshold Rising
VCC_UVLO
3.9
4.1
4.3
V
Under Voltage Lockout Threshold Hysteresis
880
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
1.2
V
VEN = 2V
2
EN Input Current
VEN = 0V
0
μA
Sync Frequency Range (Low)
FSYNCL
300
KHz
Sync Frequency Range (High)
FSYNCH
1.5
MHz
Enable Turnoff Delay
TOFF
5.0
us
Supply Current (Shutdown)
VEN = 0V
1
10
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
0.9
1.1
mA
Thermal Shutdown
TJ
150
°C
Thermal Shutdown Hysteresis
10
°C
BG Driver Bias Supply Voltage
VCC
4.5
5
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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