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ISL97632
Absolute Maximum Ratings (T A = +25°C)
Thermal Information
Input Voltage ( V IN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
Thermal Resistance (Typical, Note 1, 2)
θ JA (°C/W)
θ JC (°C/W)
LX Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
FBSW Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
Operating Conditions
TDFN Package . . . . . . . . . . . . . . . . . . 70 10.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed over temperature of -40°C to +85°C unless otherwise stated. Typical values are for
information purposes only at TJ = TC = TA = +25°C.
NOTES:
1. θ JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For θ JC , the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
V IN = V EN = 3V. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified.
Temperature limits established by characterization and are not production tested.
PARAMETER
V IN
I IN
DESCRIPTION
Supply Voltage
Supply Current
CONDITION
EN = 3V, enabled, not switching
MIN
2.4
TYP
0.8
MAX
5.5
1.5
UNIT
V
mA
EN = 0V, disabled
1
μA
Fsw
Switching Frequency
1,300
1,450
1,600
kHz
DMAX
I LIM
R SW(LX)
ILEAK
Maximum Duty Cycle
LX Current
LX Switch ON-Resistance
LX Switch Leakage Current
ILX = 100mA
VLX = 28V
90
400
95
470
900
1
%
mA
m Ω
μA
VFB
Feedback Voltage
Serial interface setting = 15 (center)
90
95
100
mV
Serial interface setting = S (S = 0,1 ..31)
Serial interface setting = 0
9.8 + 5.68 x S
9.8
mV
mV
IFB
R SW(FBSW)
FB Pin Bias Current
FBSW Switch ON-Resistance
VFB = 95mV
10
1
μA
Ω
V DIODE
Schottky Diode Forward
IDIODE = 100mA, T A = +25°C
600
850
mV
Voltage
OVP
Overvoltage Protection
ISL97632IRT14Z
ISL97632IRT18Z
ISL97632IRT26Z
14
18
26
28
V
V
V
VIL
VIH
Logic Low Voltage
Logic High Voltage
1.5
0.6
V
V
t LOGIC 1
t LOGIC 0
t LOGIC-LOAD
t LOGIC-HIGH
Timing Range for Logic 1
Timing Range for Logic 0
Timing Range for Load
Minimum Valid SDIN High
SDIN = low
SDIN = low
SDIN = low
SDIN = high
15
90
215
3
45
120
μs
μs
μs
μs
Time
2
FN9239.3
March 22, 2010
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