MAX17497A Просмотр технического описания (PDF) - Maxim Integrated
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MAX17497A
Maxim Integrated
MAX17497A Datasheet PDF : 30 Pages
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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
FLYBACK/BOOST CONVERTER
Flyback/Boost Switching
Frequency
Flyback/Boost Maximum Duty
Cycle
SSF Pullup Current
SSF Set Point Voltage
SSF Peak Current-Limit Enable
Threshold
EAFN Regulation Point
EAFN Input Bias Current
Error-Amplifier Open-Loop
Voltage Gain
Error-Amplifier Transconductance
Error-Amplifier Source Current
Error-Amplifier Sink Current
Current-Sense Transresistance
IN Clamp Voltage
LXF DMOS Switch On-Resistance
(RDSON_LXF)
LXF DMOS Peak Current Limit
LXF DMOS Runaway Current
Limit
LXF Leakage Current
Peak Switch Current Limit with
RLIMF Open
Runaway Switch Current Limit
with RLIMF Open
RLIMF Reference Current
Number of Flyback/Boost
Runaway Current-Limit Hits
Before Hiccup Timeout
Flyback/Boost Overcurrent
Hiccup Timeout
CONDITIONS
MAX17497A
MAX17497B
fSW = 250kHz (MAX17497A)
fSW = 500kHz (MAX17497B)
VSSF = 400mV
0V < VEAFN < 1.5V, TA = +25NC
VCOMPF = 2V, VRLIMF = 1V
VCOMPF = 2V, VEAFN = 1V
VCOMPF = 2V, VEAFN = 1.5V
EN/UVLO = SGND, IIN_ = 1mA (MAX17497A)
(Note 2)
ILXF = 200mA
RLIMF = 100K
RLIMF = 100K
VLXF = 65V, TA = +25NC
MIN
235
470
92
90
9
1.12
1.11
1.2
-100
1.5
80
80
0.45
31
1.62
1.9
0.35
0.39
9
TYP
MAX UNITS
250
265
kHz
500
530
94.5
97
%
92
94
10
11
FA
1.22
1.24
V
1.17
1.21
V
1.22
1.24
V
+100
nA
90
dB
1.8
2.1
mS
120
210
FA
120
210
FA
0.5
0.55
I
33.5
36
V
175
380
mI
1.9
2.23
A
2.3
2.6
A
0.1
2
FA
0.45
0.54
A
0.5
0.6
A
10
11
FA
1
#
32
ms
Maxim Integrated
3
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