MAX748ACWE Просмотр технического описания (PDF) - Maxim Integrated
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MAX748ACWE Datasheet PDF : 12 Pages
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3.3V, Step-Down,
Current-Mode PWM DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Pin Voltages:
V+ (MAX748A) ......................................................+17V, -0.3V
V+ (MAX763A) ......................................................+12V, -0.3V
LX (MAX748A) .................................(V+ - 21V) to (V+ + 0.3V)
LX (MAX763A) .................................(V+ - 12V) to (V+ + 0.3V)
OUT .................................................................................±25V
SS, CC, SHDN ..........................................-0.3V to (V+ + 0.3V)
Peak Switch Current (ILX) .....................................................2.0A
Reference Current (IREF) ...................................................2.5mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 6.90mW/°C above +70°C)...552mW
8-Pin SO (derate 5.88mW/°C above +70°C) ...............471mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C)....762mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C) .......640mW
Operating Temperature Ranges:
MAX7_ _ AC_ _ ....................................................0°C to +70°C
MAX7_ _ AE_ _ .................................................-40°C to +85°C
MAX7_ _ AMJA_ _ ..........................................-55°C to +125°C
Junction Temperatures:
MAX7_ _ AC/E ..............................................................+150°C
MAX7_ _ AM .................................................................+175°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+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
(Circuit of Figure 3, V+ = 5V, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
Input Voltage Range
Output Voltage
Line Regulation
Load Regulation
CONDITIONS
C/E temp. ranges,
V+ = 4.0V to 16V,
0mA < ILOAD < 300mA
M temp. range,
V+ = 4.0V to 16V,
0mA < ILOAD < 250mA
C/E temp. ranges,
V+ = 4.75V to 16V,
0mA < ILOAD < 500mA
M temp. range,
V+ = 4.75V to 16V,
0mA < ILOAD < 400mA
C/E temp. ranges,
V+ = 4.0V to 11V,
0mA < ILOAD < 300mA
M temp. range,
V+ = 4.0V to 11V,
0mA < ILOAD < 250mA
C/E temp. ranges,
V+ = 4.75V to 11V,
0mA < ILOAD < 500mA
M temp. range,
V+ = 4.75V to 11V,
0mA < ILOAD < 400mA
ILOAD = 0mA to 500mA
MAX748A
MIN TYP MAX
3.3
16.0
MAX763A
MIN TYP MAX
3.3
11.0
UNITS
V
3.135 3.3 3.465
3.135 3.3 3.465
3.135 3.3 3.465
3.135 3.3 3.465
V
3.135 3.3 3.465
3.135 3.3 3.465
3.135 3.3 3.465
0.13
0.001
3.135 3.3 3.465
0.13
0.001
%/V
%/mA
2 ________________________________________________________________________________________________
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