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MAX1775 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Dual-Output Step-Down DC-DC Converter - Maxim

भाग संख्या MAX1775
समारोह Dual-Output Step-Down DC-DC Converter
मैन्युफैक्चरर्स Maxim 
लोगो Maxim लोगो 
पूर्व दर्शन
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<?=MAX1775?> डेटा पत्रक पीडीएफ

MAX1775 pdf
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
ABSOLUTE MAXIMUM RATINGS
IN, SHDNM, CVH to GND.......................................-0.3V to +30V
IN to CVH, PDRV ......................................................-0.3V to +6V
PDRV to GND..................................(VCVH - 0.3V) to (VIN + 0.3V)
PGND to GND .......................................................-0.3V to +0.3V
All Other Pins to GND...............................................-0.3V to +6V
Core Output Short Circuit...........................................Continuous
Continuous Power Dissipation
16-Pin QSOP (derate 7.1mW/°C above +70°C)..........571mW
Operating Temperature .......................................-40°C to +85°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = +12V, VMAIN = VINC = VCS- = VCS+ = +3.3V, VCORE = +1.8V, Circuit of Figure 4, TA = 0°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.)
PARAMETER
Input Voltage
Input Quiescent Supply Current
SYMBOL
VIN
IIN
CONDITIONS
VFBM = +1.5V, VFBC = +1.5V,
V SHDNM = V SHDNC = +3.3V
MIN TYP MAX UNITS
2.7 28 V
15 30 µA
CS- Quiescent Supply Current
ICS-
VFBM = +1.5V, VFBC = +1.5V,
V SHDNM = V SHDNC = +3.3V
110 220 µA
Core Regulator Quiescent
Supply Current
IN Shutdown Supply Current
MAIN REGULATOR
Main Output Voltage Adjust
Range
FBM Regulation Threshold
FBM Input Current
Current-Limit Threshold
Minimum Current-Limit
Threshold
IINC
VFBM = +1.5V, VFBC = +1.5V,
V SHDNM = V SHDNC = +3.3V
SHDNM = SHDNC = GND
60 120 µA
5 30 µA
VFBM
IFBM
VCLM
VMIN
V(CS+ - CS-) = 0 to +60mV, VIN = +2.7V to +28V
VFBM = +1.3V
VCS+ - VCS-
VCS+ - VCS-
1.25
1.21
-0.1
60
6
1.25
80
15
5.5
1.29
0.1
100
24
V
V
µA
mV
mV
Valley Current Threshold
Zero Current Threshold
PDRV, NDRV Gate Drive
Resistance
VVALLEY
VZERO
VCS+ - VCS-
VCS+ - VCS-
VCS- = +3.3V, ILOAD = 50mA
40 50 60 mV
0 15 mV
2 4.4
CS- to CVL Switch Resistance
PDRV, NDRV Dead Time
Maximum Duty Cycle
Minimum On-Time
Minimum Off-Time
ICVL = 50mA
4.5 8
50
100
200 400 650
200 400 650
ns
%
ns
ns
2 _______________________________________________________________________________________

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डाउनलोड[ MAX1775 Datasheet.PDF ]


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