Datasheet

MAX17497A/MAX17497B
AC-DC and DC-DC Peak Current-Mode Converters
with Integrated Step-Down Regulator
7Maxim Integrated
Typical Operating Characteristics (continued)
(V
IN
= +15V, V
EN/UVLO
= +2V, COMPF = open, C
IN
= 1FF, C
VCC
= 1FF, T
A
= T
J
= -40NC to +125NC, unless otherwise noted. Typical
values are at T
A
= +25NC.)
LXF AND PRIMARY
CURRENT WAVEFORM
MAX17497A/B toc10
2µs/div
V
DRAIN
100V/div
I
PRI
1A/div
MAX17497A/B toc12
4ms/div
ENABLE SHUTDOWN WAVEFORM
(FULL LOAD)
V
DC
200V/div
V
OUTF
10V/div
V
OUTB
2V/div
EN/UVLO
5V/div
PEAK CURRENT LIMIT (ILIMF)
vs. RLIMF AT ROOM TEMPERATURE
MAX17497A/B toc14
RLIMF AT ROOM TEMPERATURE (kI)
PEAK CURRENT LIMIT (ILIMF) (mA)
706040 5020 3010
200
400
600
800
1000
1200
1400
1600
1800
0
08
0
ENABLE STARTUP WAVEFORM
(FULL LOAD)
MAX17497A/B toc11
4ms/div
V
DC
200V/div
V
OUTF
10V/div
V
OUTB
2V/div
EN/UVLO
5V/div
RESETN WAVEFORM
MAX17497A/B toc13
2ms/div
V
RESETN
5V/div
V
OUTF
5V/div
V
OUTB
2V/div
PEAK-CURRENT LIMIT AT RLIMF = 100kI
vs. TEMPERATURE
MAX17497A/B toc15
TEMPERATURE (°C)
100806040200-20
1.95
1.96
1.97
1.98
1.99
2.00
1.94
-40 120
PEAK-CURRENT LIMIT (A)