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MAX774CPA View Datasheet(PDF) - Maxim Integrated

Part NameMAX774CPA MaximIC
Maxim Integrated MaximIC
Description-15V or adjustable, high-efficiency, low IQ inverting DC-DC controller
MAX774CPA Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQ Inverting DC-DC Controllers
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V+ to OUT ...........................................................................21V
V+ to GND ..............................................................-0.3V, +17V
OUT to GND ........................................................-0.3V, to -17V
REF, SHDN, FB, CS...................................-0.3V to (V+ + 0.3V)
EXT ...............................................(VOUT - 0.3V) to (V+ + 0.3V)
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_C_ _ .........................................................0°C to +70°C
MAX77_E_ _ ......................................................-40°C to +85°C
MAX77_MJA ...................................................-55°C to +125°C
Maximum Junction Temperatures:
MAX77_C_ _/E_ _ ...........................................................+150°C
MAX77_MJA..................................................................+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
(V+ = 5V, ILOAD = 0mA, CREF = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
V+ Input Voltage Range
V+
3.0
16.5
V+ = 16.5V, SHDN 0.4V (operating)
100
Supply Current
V+ = 10V, SHDN 1.6V (shutdown)
2
5
V+ = 16.5V, SHDN 1.6V (shutdown)
4
FB Trip Point
3V V+ 16.5V
-10
10
MAX77_C
±50
FB Input Current
IFB
MAX77_E
±70
MAX77_M
±90
MAX774
-4.80
-5 -5.20
Output Voltage
VOUT
MAX775
MAX776
-11.52
-14.40
-12 -12.48
-15 -15.60
MAX77_C
1.4700 1.5 1.5300
Reference Voltage
VREF IREF = 0µA
MAX77_E
MAX77_M
1.4625
1.4550
1.5 1.5375
1.5 1.5450
REF Load Regulation
0µA IREF 100µA
MAX77_C/E
MAX77_M
4
10
4
15
REF Line Regulation
3V V+ 16.5V
40
100
Output Voltage Line Regulation
(Circuit of Figure 2—
Bootstrapped)
Output Voltage Load Regulation
(Circuit of Figure 2—
Bootstrapped)
MAX774, 4V V+ 15V, ILOAD = 0.5A
MAX775, 4V V+ 8V, ILOAD = 0.2A
MAX776, 4V V+ 6V, ILOAD = 0.1A
MAX774, 0A ILOAD 1A, V+ = 5V
MAX775, 0mA ILOAD 500mA, V+ = 5V
MAX776, 0mA ILOAD 400mA, V+ = 5V
0.035
0.088
0.137
1.5
1.5
1.0
UNITS
V
µA
mV
nA
V
V
mV
µV/V
mV/V
mV/A
2 _______________________________________________________________________________________
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The MAX774/MAX775/MAX776 inverting switching regulators deliver high efficiency over three decades of load current.

A unique current-limited, pulse frequency modulated (PFM) control scheme provides the benefits of pulse-width modulation (high efficiency with heavy loads), while using less than 100µA of supply current (vs. 2mA to 10mA for PWM converters).

The result is high efficiency over a wide range of loads.

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