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MAX17497B Datasheet(PDF) 2 Page - Maxim Integrated Products

Part # MAX17497B
Description  AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step-Down Regulator
PDF  30 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17497B Datasheet(HTML) 2 Page - Maxim Integrated Products

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AC-DC and DC-DC Peak-Current-Mode Converters
with Integrated Step-Down Regulator
MAX17497A/MAX17497B
 Maxim Integrated Products 2
IN to SGND............................................................-0.3V to +40V
EN/UVLO to SGND....................................... -0.3V to VIN + 0.3V
OVI to SGND ...............................................-0.3V to VCC + 0.3V
VCC to SGND ..........................................................-0.3V to +6V
SSF, RLIMF, EAFN, COMPF, SCOMPF
to SGND ............................................... -0.3V to (VCC + 0.3V)
LXF to SGND.........................................................-0.3V to +70V
INB to SGND .........................................................-0.3V to +26V
LXB to SGND.............................................. -0.3V to VINB + 0.3V
OUTB to SGND .......................................................-0.3V to +6V
RESETN to SGND....................................................-0.3V to +6V
PGNDF, PGNDB to SGND ...................................-0.3V to +0.3V
Continuous Power Dissipation (Single-Layer Board)
TQFN (derate 20.8mW/NC above +70NC) (Note 1) ...1700mW
Operating Temperature Range........................ -40NC to +125NC
Storage Temperature Range............................ -65NC to +160NC
Junction Temperature (continuous) ................................+150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
ABSOLUTE MAXIMUM RATINGS
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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, COMPF = open, CIN = 1FF, CVCC = 1FF, TA = TJ = -40NC to +125NC, unless otherwise noted. Typical
values are at TA = +25NC.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT SUPPLY (VIN)
IN Voltage Range (VIN)
MAX17497A
4.5
29
V
MAX17497B
4.5
36
IN Supply Startup Current Under
UVLO
IINSTARTUP, VIN < UVLO or EN/UVLO = SGND
22
36
F
A
IN Supply Current (IIN)
Switching, fSW = 250kHz (MAX17497A)
2.75
4.5
mA
Switching, fSW = 500kHz (MAX17497B)
3
5
IN Boostrap UVLO Rising
Threshold
MAX17497A
19
20.5
22
V
MAX17497B
3.9
4.15
4.4
IN Bootstrap UVLO Falling
3.65
3.95
4.25
V
EN/UVLO Threshold
Rising
1.18
1.23
1.28
V
Falling
1.11
1.17
1.21
EN/UVLO Input Leakage Current
0V < VEN/UVLO < 1.5V, TA = +25NC
-100
0
+100
nA
LDO
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
OVERVOLTAGE PROTECTION
OVI Threshold
Rising
1.18
1.23
1.28
V
Falling
1.11
1.17
1.21
OVI Masking Delay
2
F
s
OVI Input Leakage Current
0V < VOVI < 1.5V, TA = +25NC
-100
0
+100
nA



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