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

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETERS

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

REF Load Regulation

0

MAX77_C/E

4

10

mV

MAX77_M

4

15

REF Line Regulation

3V

≤ V+ ≤ 16.5V

40

100

µV/V

FB Trip-Point Voltage

MAX77_C

1.4700

1.50

1.5300

V

MAX77_E

1.4625

1.50

1.5375

MAX77_M

1.4550

1.50

1.5450

FB Input Current

MAX77_C

±20

nA

MAX77_E

±40

MAX77_M

±60

SHDN Input High Voltage

V+ = 2.0V to 16.5V

1.6

V

SHDN Input Low Voltage

MAX77_C/E, V+ = 2.0V to 16.5V

0.4

V

SHDN Input Current

±1

µA

LBI Input Current

MAX773, V+ = 16.5V, LBI = 1.5V

±20

nA

LBI Hysteresis

MAX773

20

LBI Threshold Voltage

MAX773, LBI falling

MAX77_C

1.4700

1.50

1.5300

V

MAX77_E

1.4625

1.50

1.5375

MAX77_M

1.4550

1.50

1.5450

LBO Leakage Current

0.01

1.00

µA

LBO Output Voltage Low

MAX773, V+ = 5V, LBO sinking 1mA

0.1

0.4

V

V+ = 16.5V, SHDN = 0V or V+

mV

Current-Limit Trip Level

V+ = 5V to 16.5V

170

200

230

mV

5.5

6.3

V

CS Input Current

0.01

±1

µA

EXT Rise Time

V+ = 5V, 1nF from EXT to ground (Note 3)

55

ns

EXT Fall Time

V+ = 5V, 1nF from EXT to ground (Note 3)

55

ns

Supply Voltage in

Shunt Mode

Note 1: Output voltage guaranteed using preset voltages. See Figures 7a–7d for output current capability versus input voltage.

Note 2: Output voltage line and load regulation depend on external circuit components.

Note 3: For the MAX773, EXT is EXTH and EXTL shorted together.

LBI Delay

5mV overdrive

2.5

µs

MAX77_M, V+ = 2.0V to 16.5V

0.2