MAX17498BATE 查看數據表（PDF） - Maxim Integrated
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MAX17498BATE
Maxim Integrated
MAX17498BATE Datasheet PDF : 20 Pages
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MAX17498A/MAX17498B/MAX17498C
AC-DC and DC-DC Peak Current-Mode Converters
for Flyback/Boost Applications
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +15V, VEN/UVLO = +2V, COMP = open, CIN = 1µF, CVCC = 1µF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 1)
PARAMETER
OVERVOLTAGE PROTECTION (OVI)
OVI Threshold
Rising
Falling
OVI Masking Delay
CONDITIONS
OVI Input Leakage Current
0V < VOVI < 1.5V, TA = +25NC
SWITCHING FREQUENCY AND MAXIMUM DUTY CYCLE (fSW and DMAX)
Switching Frequency
Maximum Duty Cycle
MAX17498A/MAX17498C
MAX17498B
MAX17498A/MAX17498C
MAX17498B
Minimum Controllable On Time tONMIN
SOFT-START (SS)
SS Set-Point Voltage
SS Pullup Current
VSS = 400mV
SS Peak Current-Limit-Enable
Threshold
ERROR AMPLIFIER (EA+, EA-, and COMP)
EA+ Input Bias Current
VEA+ = 1.5V, TA = +25NC
EA- Input Bias Current
VEA- = 1.5V, TA = +25NC
Error-Amplifier Open-Loop
Voltage Gain
Error-Amplifier
Transconductance
VCOMP = 2V, VLIM = 1V
Error-Amplifier Source Current
VCOMP = 2V, EA- < EA+
Error-Amplifier Sink Current
VCOMP = 2V, EA- > EA+
Current-Sense Transresistance
INTERNAL SWITCH
DMOS Switch On-Resistance
(RDSON)
ILX = 200mA
DMOS Peak Current Limit
DMOS Runaway Current Limit
LIM = 100K
LIM = 100K
LX Leakage Current
VLX = 65V, TA = +25NC
CURRENT LIMIT (LIM)
LIM Reference Current
Peak Switch Current Limit with
LIM Open
Runaway Switch Current Limit
with LIM Open
MIN TYP MAX UNITS
1.18 1.23 1.28
V
1.11 1.17 1.21
2
µs
-100
0
+100
nA
235 250 265
kHz
470 500 530
92 94.5 97
%
90
92
94
110
ns
1.2 1.22 1.24
V
9
10
11
µA
1.11 1.17 1.21
V
-100
-100
+100
nA
+100
nA
90
dB
1.5
1.8
2.1
mS
80
120 210
µA
80
120 210
µA
0.45 0.5 0.55
I
175 380
mI
1.62 1.9 2.23
A
1.9
2.3
2.6
A
0.1
1
µA
9
10
11
µA
0.39 0.45 0.54
A
0.39 0.5
0.6
A
Maxim Integrated
3
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