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MAX879L डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - (MAX877L - MAX879L) Step-Up & Down DC-DC Converters - Maxim Integrated Products

भाग संख्या MAX879L
समारोह (MAX877L - MAX879L) Step-Up & Down DC-DC Converters
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
पूर्व दर्शन
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<?=MAX879L?> डेटा पत्रक पीडीएफ

MAX879L pdf
Low-Voltage Input, 3V/3.3V/5V/
Adjustable Output, Step-Up DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (IN to PGND).......................................0V to 4.5V
Output Short-Circuit Duration to PGND, AGND (Note 1)....30sec
Voltage Applied to:
LX (switch off) .......................................................-0.3V to 4.5V
(switch on) ....................................30sec short to IN or OUT
OUT, SHDN ...........................................................-0.3V to +7V
FB ...........................................................-0.3V to (OUT + 0.3V)
AGND to PGND ........................................................-0.3V, +0.3V
Reverse Battery Current....................................................900mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C) ..........................471mW
CERDIP (derate 8.00mW/°C above +70°C) ..................640mW
Operating Temperature Ranges:
MAX77_LC_A .......................................................0°C to +70°C
MAX77_LE_A ....................................................-40°C to +85°C
MAX77_LMJA .................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: The output may be shorted to ground if the package power dissipation is not exceeded.
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 = +2.5V, ILOAD = 0mA, L = 22µH, COUT = 100µF, SHDN and ILIM connected to IN, AGND connected to PGND, TA = TMIN to TMAX,
typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Start-Up Voltage ILOAD < 10mA, TA = +25°C (Note 2)
1V
Maximum Operating Voltage (Notes 2, 3)
4.5 V
Output Voltage
MAX777L/MAX779L
(set to 5V)
(Note 6)
Output Voltage
MAX778L
(Note 6)
Output Voltage Range
(MAX779L)
MAX777LC/
MAX779LC
MAX777LE/
MAX779LE
MAX777LM/
MAX779LM
MAX778LC
SEL = 0V MAX778LE
MAX778LM
MAX778LC
SEL = OPEN MAX778LE
MAX778LM
(Note 4)
ILOAD 30mA, 1.1V VIN 4.5V or
ILOAD 140mA, 1.8V VIN 4.5V
ILOAD 30mA, 1.2V VIN 4.5V or
ILOAD 130mA, 1.8V VIN 4.5V
ILOAD 25mA, 1.25V VIN 4.5V or
ILOAD 120mA, 1.8V VIN 4.5V
ILOAD 50mA, 1.1V VIN 3.3V or
ILOAD 210mA, 1.8V VIN 3.3V
ILOAD 50mA, 1.2V VIN 3.3V or
ILOAD 200mA, 1.8V VIN 3.3V
ILOAD 50mA, 1.25V VIN 3.3V or
ILOAD 180mA, 1.8V VIN 3.3V
ILOAD 50mA, 1.1V VIN 3V or
ILOAD 210mA, 1.8V VIN 3V
ILOAD 50mA, 1.2V VIN 3V or
ILOAD 200mA, 1.8V VIN 3V
ILOAD 40mA, 1.25V VIN 3V or
ILOAD 180mA, 1.8V VIN 3V
4.80 5.00 5.20 V
3.17 3.30 3.43
V
2.88 3.00 3.12
2.5 6.0 V
Efficiency
ILOAD = 100mA
82 %
No-Load Supply Current ILOAD = 0mA (switch off)
190 310 µA
Shutdown Supply Current SHDN = 0V MAX77_LC, MAX77_LE
MAX77_LM
20 30
µA
20 35
SHDN Input Current
0V < SHDN < VIN
VIN < SHDN < 5V
15 100 nA
12 40 µA
2 _______________________________________________________________________________________

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डाउनलोड[ MAX879L Datasheet.PDF ]


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