MAX777LESA datasheet(2/12 Pages) MAXIM

2 / 12 page

Low-Voltage Input, 3V/3.3V/5V/

Adjustable Output, Step-Up DC-DC Converters

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.)

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.

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.

PARAMETER

Output Voltage

MAX777L/MAX779L

(set to 5V)

(Note 6)

MIN

TYP

MAX

(Note 4)

ILOAD = 100mA

UNITS

SHDN Input Current

MAX77_LM

MAX77_LC, MAX77_LE

Output Voltage Range

(MAX779L)

2.5

6.0

µA

VIN < SHDN < 5V

100

4.80

5.00

5.20

0V <

SHDN < VIN

MAX777LC/

MAX779LC

Maximum Operating Voltage

Minimum Start-Up Voltage

4.5

Efficiency

No-Load Supply Current

190

310

µA

Shutdown Supply Current

µA

CONDITIONS

ILOAD = 0mA (switch off)

SHDN = 0V

MAX777LE/

MAX779LE

MAX777LM/

MAX779LM

(Notes 2, 3)

ILOAD < 10mA, TA = +25°C (Note 2)

Output Voltage

MAX778L

(Note 6)

MAX778LE

3.17

3.30

3.43

MAX778LC

SEL = 0V

MAX778LM

MAX778LE

2.88

3.00

3.12

MAX778LC

SEL = OPEN

MAX778LM

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

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