MAX17499 Maxim Integrated Products, MAX17499 Datasheet - Page 2

• Manufacturer Part Number: MAX17499
• Description: (MAX17499 / MAX17500) Current-Mode PWM Controllers
• Manufacturer: Maxim Integrated Products

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ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
IN Clamp (internal shunt) Current .........................................5mA
V
FB, COMP, UVLO/EN, RT, CS to GND .....................-0.3V to +6V
UFLG to GND .........................................................-0.3V to +30V
NDRV to GND.............................................-0.3V to (V
Current-Mode PWM Controllers with
Programmable Switching Frequency
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation 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
(V
MAX17500A), R12 = 7.5kΩ (MAX17499B/MAX17500B), R15 = 1kΩ, C6 = 100nF (see the Typical Application Circuit ), NDRV = open,
V
+25°C.) (Note 1)
2
UVLO/STARTUP
Bootstrap UVLO Wake-Up Level
Bootstrap UVLO Shutdown Level
UVLO/EN Wake-Up Threshold
UVLO/EN Shutdown Threshold
UVLO/EN Input Current
UVLO/EN Hysteresis
IN Supply Current In UVLO
IN Input Voltage Range
UVLO/EN to UFLG Propagation
Delay (Figure 3)
UVLO/EN to NDRV Propagation
Delay (Figure 3)
Bootstrap UVLO Propagation
Delay
UFLG Low Output Voltage
UFLG High Output Leakage
Current
INTERNAL SUPPLY
V
IN Supply Current After Startup
Shutdown Supply Current
CC
UVLO/EN
IN
CC
_______________________________________________________________________________________
to GND ............................................................-0.3V to +13V
= +12V (for MAX17500, bring V
Regulator Set Point
= +1.4V, V
PARAMETER
FB
= +1.0V, COMP = open, V
IN
SYMBOL
I
V
V
V
V
V
V
I
t
t
up to 23.6V for startup), 10nF bypass capacitors at IN and V
START
t
t
UVLO
BUVR
BUVF
EXTR
EXTF
CCSP
SUVR
SUVF
ULR2
UFLG
ULF2
V
I
IN
IN
V
V
UVLO/EN rising
UVLO/EN falling
V
V
bootstrap UVLO
MAX17499 only
UVLO/EN steps up from 1V to 1.4V
UVLO/EN steps down from 1.4V to 1V
UVLO/EN steps up from 1V to 1.4V
UVLO/EN steps down from 1.4V to 1V
V
only)
V
(MAX17500 only)
I
V
V
from V
V
UVLO/EN = low
UFLG
CS
IN
IN
UVLO/EN
IN
IN
IN
UFLG
IN
IN
CC
rising (MAX17500 only)
falling (MAX17500 only)
= 19V, MAX17500 only when in
steps up from 9V to 24V (MAX17500
steps down from 24V to 9V
= 10.8V to 24V, sinking 1μA to 20mA
= 24V
= 0V, T
+ 0.3V)
= 5mA sinking
CC
= 25V
≤ 2V
A
CONDITIONS
= -40°C to +125°C, unless otherwise noted. Typical values are at T
Continuous Power Dissipation (T
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range ............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
10-Pin μMAX (derate 5.6mW/°C above +70°C) ........444.4mW
19.68
1.215
MIN
9.05
1.14
150
-50
9.5
7.0
A
CC
= +70°C)
, R12 = 15kΩ (MAX17499A/
TYP
21.6
9.74
1.23
1.17
210
0.6
0.1
60
50
50
3
3
5
1
2
23.60
10.43
1.245
MAX
1.20
24.0
10.5
+50
300
1.5
90
10
90
1
4
UNITS
mV
mA
ms
nA
μA
μA
μA
μs
μs
μs
V
V
V
V
V
V
V
A
=
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