AC-DC and DC-DC Peak-Current-Mode Converters

with Integrated Step-Down Regulator

MAX17497A/MAX17497B

 Maxim Integrated Products 4

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Flyback/Boost Overcurrent

Hiccup Timeout

32

ms

Minimum On-Time

110

ns

SCOMPF Pullup Current

9

10

11

F

A

Slope-Compensation Resistor

Range

MAX17497B

30

200

kI

Default Slope-Compensation

Ramp

SCOMPF = open

100

mV/Fs

STEP-DOWN REGULATOR

INB Voltage Range

7

16

V

INB Quiescent Supply Current

200

300

F

A

INB UVLO Threshold

Rising

6.2

6.5

6.7

V

Falling

5.9

6.2

6.4

425

800

mI

225

425

mI

Switching Frequency

0.94

1

1.06

MHz

LXB Leakage Current

0.1

1

F

A

LXB Dead Time

(Note 4)

5

ns

3.245

3.3

3.355

V

7

10

F

A

Peak Current-Limit Fault

Threshold

0.9

1.1

1.23

A

Runaway Current-Limit Threshold

1.05

1.25

1.45

A

Soft-Start Duration Count

2048

Cycles

Number of Peak Current-Limit

Hits Before Hiccup Timeout

8

Hits

Number of Runaway Current-Limit

Hits Before Hiccup Timeout

1

Hits

Overcurrent Hiccup Timeout

32,768

Cycles

Minimum On-Time

100

ns

RESETN

RESETN Output Leakage Current

(Off-State)

-1

+1

F

A

RESETN Output Voltage

(On-State)

0

0.4

V

RESETN Higher Thresholds

EAFN rising

93.5

95

96.5

%

OUTB rising

93.5

95

96.5