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MAX17497A

AC-DC and DC-DC Peak Current-Mode Converters with Integrated Step-Down Regulator

Maxim Integrated 

MAX17497A/MAX17497B

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

with Integrated Step-Down Regulator

ELECTRICAL CHARACTERISTICS (continued)

(VIN = +15V, VEN/UVLO = +2V, COMPF = open, CIN = 1FF, CVCC = 1FF, TA = TJ = -40NC to +125NC, unless otherwise noted. Typical

values are at TA = +25NC.) (Note 1)

PARAMETER

Minimum On-Time

SCOMPF Pullup Current

Slope-Compensation Resistor

Range

CONDITIONS

MAX17497B

MIN

TYP

MAX UNITS

110

ns

9

10

11

FA

30

150

kI

Slope-Compensation Ramp

SCOMPF = 100kI

175

200

225

mV/Fs

Default Slope-Compensation

Ramp

STEP-DOWN REGULATOR

INB Voltage Range

INB Quiescent Supply Current

INB UVLO Threshold

High-Side RDSON

Low-Side RDSON

Switching Frequency

LXB Leakage Current

LXB Dead Time

VOUTB Output-Voltage Accuracy

VOUTB Input Bias Current

Peak Current-Limit Fault

Threshold

Runaway Current-Limit Threshold

Soft-Start Duration Count

Number of Runaway Current-Limit

Hits Before Hiccup Timeout

Overcurrent Hiccup Timeout

Minimum On-Time

RESETN

RESETN Output Leakage Current

(Off-State)

RESETN Output Voltage

(On-State)

SCOMPF = open

VINB = 16V, VOUTB > 3.3V

Rising

Falling

ILXB =200mA

ILXB =200mA

VLXB = VINB - 1V, VLXB = VPGNDB + 1V,

TA = +25NC

(Note 3)

7V < VINB <16V, 50mA < IOUT < 600mA

VOUTB = 3.3V

VOUTB = 3.1V

VOUTB < 100mV

VINB > 7V

VRESETN = 5V, TA = +25NC

IRESETN = 10mA

60

mV/Fs

7

6.2

5.9

0.94

3.245

0.9

1.05

200

6.5

6.2

425

225

1

0.1

5

3.3

7

1.1

1.25

2048

1

32,768

100

16

300

6.7

6.4

800

425

1.06

1

3.355

10

1.23

1.45

V

FA

V

mI

mI

MHz

FA

ns

V

FA

A

A

Cycles

Hits

Cycles

ns

-1

+1

FA

0

0.4

V

Maxim Integrated

  4

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