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MIC2174 датащи(PDF) 4 Page - Micrel Semiconductor

номер детали MIC2174
подробное описание детали  300kHz, Synchronous Buck Controller 300kHz, Synchronous Buck Controller
PDF  24 Pages
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производитель  MICREL [Micrel Semiconductor]
домашняя страница  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2174 датащи(HTML) 4 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2174
September 2009
4
M9999-090409-B
Parameter
Condition
Min
Typ
Max
Units
Oscillator
Switching Frequency
Measured in Test Mode
0.225
0.3
0.375
MHz
Maximum Duty Cycle
Measured at DH
(8)
87
%
Minimum Duty Cycle
Measured at DH
0
%
FET Drives
DH, DL Output Low Voltage
ISINK = 10mA
0.1
V
DH, DL Output High Voltage
ISOURCE = 10mA
VIN-0.1V
or
VBST-0.1V
V
DH On-Resistance, High State
2.1
3.3
Ω
DH On-Resistance, Low State
1.8
3.3
Ω
DL On-Resistance, High State
1.8
3.3
Ω
DL On-Resistance, Low State
1.2
2.3
Ω
LX Leakage Current
VLX = 40V, VIN = 5.5V,VBST = 45.5V
55
µA
HSD Leakage Current
VLX = 40V, VIN = 5.5V,VBST = 45.5V
21
µA
Thermal Protection
Over-temperature Shutdown
155
°C
Over-temperature Shutdown
Hysteresis
10
°C
Shutdown Control
En Logic Level Low
3V < VIN <5.5V
0.4
0.8
V
En Logic Level High
3V < VIN <5.5V
0.9
1.2
V
En Pull-up Current
50
µA
Note:
8. The maximum duty cycle is limited by the fixed mandatory off time TOFF of typical 363ns.



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