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ISL6843 Datasheet(PDF) 6 Page - Intersil Corporation

Part # ISL6843
Description  Improved Industry Standard Single-Ended Current Mode PWM Controller
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6843 Datasheet(HTML) 6 Page - Intersil Corporation

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6
FN9124.10
August 7, 2008
Absolute Maximum Ratings
Thermal Information
Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V
OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VDD + 0.3V
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Operating Conditions
Temperature Range
ISL684xIx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage Range (Typical, Note 3)
ISL6840, ISL6841 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V to 14V
ISL6843, ISL6845. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V to 16V
ISL6842, ISL6844. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V to 18V
Thermal Resistance (Typical)
θJA (°C/W) θJC (°C/W)
DFN Package (Notes 1, 2) . . . . . . . . . .
77
6
SOIC Package (Note 1) . . . . . . . . . . . .
100
N/A
MSOP Package (Note 1) . . . . . . . . . . .
130
N/A
Maximum Junction Temperature . . . . . . . . . . . . . . . -55°C to +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.
NOTES:
1.
θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. For
θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. All voltages are with respect to GND.
Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” and “Typical
Application” schematic on pages 3 and 4. VDD = 15V (Note 6), Rt = 10kΩ, Ct = 3.3nF, TA = -40 to +105°C 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
TEST CONDITIONS
MIN
TYP
MAX
UNITS
UNDERVOLTAGE LOCKOUT
START Threshold (ISL6840, ISL6841)
6.5
7.0
7.5
V
START Threshold (ISL6843, ISL6845)
7.8
8.4
9.0
V
START Threshold (ISL6842, ISL6844)
13.3
14.3
15.3
V
STOP Threshold (ISL6840, ISL6841)
6.1
6.6
6.9
V
STOP Threshold (ISL6843, ISL6845)
6.7
7.2
7.7
V
STOP Threshold (ISL6842, ISL6844)
8.0
8.8
9.6
V
Hysteresis (ISL6840, ISL6841)
-
0.4
-
V
Hysteresis (ISL6843, ISL6845)
-
0.8
-
V
Hysteresis (ISL6842, ISL6844)
-
5.4
-
V
Start-up Current, IDD
VDD < START Threshold
-
60
100
µA
Operating Current, IDD
(Note 4)
-
3.3
4.0
mA
Operating Supply Current, ID
Includes 1nF GATE loading
-
4.1
5.5
mA
REFERENCE VOLTAGE
Overall Accuracy
Over line (VDD = 12V to 18V), load,
temperature
4.925
5.000
5.050
V
Long Term Stability
TA = +125°C, 1000 hours (Note 5)
-
5
-
mV
Fault Voltage
4.40
4.65
4.85
V
VREF Good Voltage
4.60
4.80
VREF - 0.05
V
Hysteresis
50
165
250
mV
Current Limit, Sourcing
-20
-
-
mA
Current Limit, Sinking
5
-
-
mA
CURRENT SENSE
Input Bias Current
VCS = 1V
-1.0
-
1.0
µA
CS Offset Voltage
VCS = 0V (Note 5)
95
100
105
mV
COMP to PWM Comparator Offset Voltage
VCS = 0V (Note 5)
0.80
1.15
1.30
V
Input Signal, Maximum
0.91
0.97
1.03
V
ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845


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