MAX774ESA datasheet(2/16 Pages) MAXIM

2 / 16 page

-5V/-12V/-15V or Adjustable, High-Efficiency,

Low IQ Inverting DC-to-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, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(V+ = 5V, ILOAD = 0mA, CREF = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°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.

PARAMETER

SYMBOL

CONDITIONS

Output Voltage Line Regulation

(Circuit of Figure 2—

Bootstrapped)

MIN

TYP

MAX

UNITS

V+ Input Voltage Range

V+

3.0

16.5

Supply Current

V+ = 16.5V, SHDN

≤ 0.4V (operating)

MAX774, 4V

≤ V+ ≤ 15V, ILOAD = 0.5A

100

µA

0.035

mV/V

V+ = 10V, SHDN

≥ 1.6V (shutdown)

MAX776, 4V

≤ V+ ≤ 6V, ILOAD = 0.1A

0.137

V+ = 16.5V, SHDN

≥ 1.6V (shutdown)

FB Trip Point

≤ V+ ≤ 16.5V

-10

FB Input Current

IFB

MAX77_C

MAX775, 4V

≤ V+ ≤ 8V, ILOAD = 0.2A

±50

0.088

MAX77_E

±70

MAX775, 0mA

≤ ILOAD ≤ 500mA, V+ = 5V

1.5

MAX77_M

±90

Output Voltage Load Regulation

(Circuit of Figure 2—

Bootstrapped)

Output Voltage

VOUT

MAX774

-4.80

-5

-5.20

MAX774, 0A

≤ ILOAD ≤ 1A, V+ = 5V

1.5

MAX775

mV/A

-11.52

-12

-12.48

MAX776, 0mA

≤ ILOAD ≤ 400mA, V+ = 5V

MAX776

1.0

-14.40

-15

-15.60

Reference Voltage

VREF

IREF = 0µA

MAX77_C

1.4700

1.5

1.5300

MAX77_E

1.4625

1.5

1.5375

MAX77_M

1.4550

1.5

1.5450

REF Load Regulation

0µA

≤ IREF ≤ 100µA

MAX77_C/E

410

MAX77_M

415

REF Line Regulation

≤ V+ ≤ 16.5V

100

µV/V

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