ISL8560 查看數據表（PDF） - Intersil
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ISL8560 Datasheet PDF : 17 Pages
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ISL8560
Absolute Maximum Ratings
Input Voltage VIN . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 72V
Voltage at BOOT pin . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 82V
LX, RTCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 60V
REF, FB, SS, EN, SYNC, PGOOD pins. . . . . . . . . . . . . . . . . . . . .8V
VCC5* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 5.5V
Recommended Operating Conditions
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Supply Voltage Range (Typical). . . . . . . . . . . . . . . . . . . 9.0V to 60V
Thermal Information
Thermal Resistance (Typical, Notes 1, 2) θJA (°C/W) θJC (°C/W)
QFN Package. . . . . . . . . . . . . . . . . . . .
30
1.5
Maximum Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Maximum Junction Temperature (Hermetic Package or Die) . . +150°C
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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.
*An accidental short between VCC5 and GND may cause excessive heating and permanent damage to the device.
NOTES:
1. θJA 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 θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Additional heatsinking may be required to insure that the junction temperature does not exceed above +125°C.
Electrical Specifications
Unless otherwise specified the specifications listed in the table are tested at TA = +25°C and guard band for the
full Temperature Range, VIN = 48V, VOUT = 5.0V, IOUT = 0A. Typical values are at TA = +25°C. 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
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNITS
VIN SUPPLY
Input Voltage Range
9.0
24
60
V
VIN SUPPLY CURRENT
Shut-down Current
IDD
VIN = 9V, EN = HIGH
VIN = 60V, EN = HIGH
Operating Current
IDD
VIN = 9V, VFB = 1.5V
VIN = 60V, VFB = 1.5V
VCC5 SUPPLY (A 1µF capacitor is needed from VCC5 to GND)
35
60
µA
60
110
µA
3.6
4
mA
6.0
8.0
mA
VCC5 Output Voltage
Maximum Output Current
INPUT UV
VIN = 9.0V to 60V, IL = 0mA to 5mA
VIN = 24V
4.9
5.0
5.1
V
5
mA
Rising UV Threshold
7.8
8.9
V
UV Threshold Hysteresis
0.18
0.3
0.55
V
BUCK CONVERTER
Output Voltage (Note 3)
Maximum Duty Cycle
IOUT = 2A
F = 300kHz
1.2
VIN - 5
V
90
96
%
Minimum Controllable ON Time
F = 300kHz
150
ns
OSCILLATOR
Total Variation on Set Frequency
Over the VIN range with frequency set by
external resistor and capacitor at RTCT
±10
%
Frequency Range (Set by RTCT)
SYNC Range
Tested Oscillation Frequency
fOSC
fOSC
fOSC
VIN = 9V to 60V, RT = 100kΩ, CT = 1200pF
VIN = 9V to 60V, RT = 27.4kΩ, CT = 220pF
100
600
kHz
100
600
kHz
60
kHz
725
kHz
2
FN9244.7
September 19, 2008
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