MAX17498A View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX17498A
Maxim Integrated
MAX17498A Datasheet PDF : 20 Pages
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MAX17498A/MAX17498B/MAX17498C
AC-DC and DC-DC Peak Current-Mode Converters
for Flyback/Boost Applications
ABSOLUTE MAXIMUM RATINGS
IN to SGND.............................................................-0.3V to +40V
EN/UVLO to SGND.......................................... -0.3V to IN + 0.3V
OVI to SGND............................................... -0.3V to VCC + 0.3V
VCC to SGND...........................................................-0.3V to +6V
SS, LIM, EA-, EA+, COMP, SLOPE,
REF to SGND.........................................-0.3V to (VCC + 0.3V)
LX to SGND............................................................-0.3V to +70V
PGOOD to SGND.....................................................-0.3V to +6V
PGND to SGND.....................................................-0.3V to +0.3V
Continuous Power Dissipation (Single-Layer Board)
TQFN (derate 20.8mW/°C above +70°C)..................1700mW
Operating Temperature Range......................... -40°C to +125°C
Storage Temperature Range............................. -65°C to +160°C
Junction Temperature (continuous).................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(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
INPUT SUPPLY (VIN)
IN Voltage Range (VIN)
IN Supply Startup Current Under
UVLO
IN Supply Current (IIN)
IN Boostrap UVLO Rising
Threshold
CONDITIONS
MAX17498A
MAX17498B/MAX17498C
IINSTARTUP, VIN < UVLO or EN/UVLO = SGND
Switching, fSW = 250kHz (MAX17498A/MAX17498C)
Switching, fSW = 500kHz (MAX17498B)
MAX17498A
MAX17498B/MAX17498C
MIN TYP MAX UNITS
4.5
29
V
4.5
36
22
36
µA
1.8
3
mA
2
3.25
19 20.5 22
V
3.85 4.15 4.4
IN Bootstrap UVLO Falling
Threshold
3.65 3.95 4.25
V
IN Clamp Voltage
EN/UVLO = SGND, IIN = 1mA (MAX17498A) (Note 2)
31 33.5 36
V
LINEAR REGULATOR (VCC)
VCC Output Voltage Range
6V < VIN < 29V, 0mA < IVCC < 50mA
4.8
5
5.2
V
VCC Dropout Voltage
VIN = 4.5V, IVCC = 20mA
160 300
mV
VCC Current Limit
VCC = 0V, VIN = 6V
50
100
mA
ENABLE (EN/UVLO)
EN/UVLO Threshold
Rising
Falling
1.18 1.23 1.28
V
1.11 1.17 1.21
EN/UVLO Input Leakage Current 0V < VEN/UVLO < 1.5V, TA = +25NC
-100
0
+100
nA
Maxim Integrated
2
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