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

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Supply Voltages

V+ to GND.............................................................-0.3V to 17V

V+ to SGND.............................................................-0.3V to 7V

SGND........................................................-0.3V to (V+ + 0.3V)

EXT, CS, REF, LBO, LBI, SHDN, FB.............-0.3V to (V+ + 0.3V)

EXTH, EXTL ..................................................-0.3V to (V+ + 0.3V)

V5, V12, V15 .............................................................-0.3V to 17V

GND to AGND .........................................................0.1V to -0.1V

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW

8-Pin SO (derate 5.88mW/°C above +70°C) ................471mW

8-Pin CERDIP (derate 8.00mW/°C above +70°C) ........640mW

14-Pin Plastic DIP

(derate 10.00mW/°C above +70°C) .............................800mW

14-Pin SO (derate 8.33mW/°C above +70°C) ..............667mW

14-Pin CERDIP (derate 9.09mW/°C above +70°C) ......727mW

Operating Temperature Ranges

MAX77_C_ _ ........................................................0°C to +70°C

MAX77_E_ _......................................................-40°C to +85°C

MAX77_MJ_ ...................................................-55°C to +125°C

Junction Temperatures

MAX77_C_ _/E_ _ ..........................................................+150°C

MAX77_MJ_..................................................................+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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Current

85

110

µA

Standby Current

2

5

µA

4

Output Voltage (Note 1)

V+ = 2.0V to 5.0V, over full load range

4.80

5.0

5.20

V

V+ = 2.0V to 12.0V, over full load range

11.52

12.0

12.48

V+ = 2.0V to 15.0V, over full load range

14.40

15.0

15.60

Figure 2a, V+ = 2.7V to 4.5V,

5

mV/V

20

mV/A

Maximum Switch On-Time

12

16

20

µs

Minimum Switch Off-Time

1.8

2.3

2.8

µs

Efficiency

87

%

Reference Voltage

MAX77_C

1.4700

1.5

1.5300

V

MAX77_E

1.4625

1.5

1.5375

MAX77_M

1.4550

1.5

1.5450

Output Voltage Line Regulation

(Note 2)

Output Voltage Load Regulation

(Note 2)

V+ = 10.0V, SHDN

≥ 1.6V (shutdown)

V+ = 16.5V, SHDN

≥ 1.6V (shutdown)

V+ = 16.5V, SHDN = 0V (normal operation)

Minimum Start-Up Voltage

MAX770/MAX771/MAX772

1.8

2.0

V

MAX770–772 (internal feedback resistors)

2.0

16.5

MAX770–772C/E (external resistors)

3.0

16.5

MAX770–772MJA (external resistors)

3.1

16.5

MAX773C/E

3.0

16.5

MAX773MJD

3.1

16.5

Input Voltage Range

V