ISL6845IU Intersil, ISL6845IU Datasheet - Page 6

• Manufacturer Part Number: ISL6845IU
• Description: IC CTRLR PWM SGL-ENDED 8-MSOP
• Manufacturer: Intersil

Specifications of ISL6845IU

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 2MHz
• Duty Cycle: 50%
• Voltage - Supply: 9 V ~ 16 V
• Buck: Yes
• Boost: Yes
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Frequency-max: 2MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Absolute Maximum Ratings
Supply Voltage, V
OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to V
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Operating Conditions
Temperature Range
Supply Voltage Range (Typical, Note 3)
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:
Electrical Specifications
UNDERVOLTAGE LOCKOUT
START Threshold (ISL6840, ISL6841)
START Threshold (ISL6843, ISL6845)
START Threshold (ISL6842, ISL6844)
STOP Threshold (ISL6840, ISL6841)
STOP Threshold (ISL6843, ISL6845)
STOP Threshold (ISL6842, ISL6844)
Hysteresis (ISL6840, ISL6841)
Hysteresis (ISL6843, ISL6845)
Hysteresis (ISL6842, ISL6844)
Start-up Current, I
Operating Current, I
Operating Supply Current, I
REFERENCE VOLTAGE
Overall Accuracy
Long Term Stability
Fault Voltage
VREF Good Voltage
Hysteresis
Current Limit, Sourcing
Current Limit, Sinking
CURRENT SENSE
Input Bias Current
CS Offset Voltage
COMP to PWM Comparator Offset Voltage
Input Signal, Maximum
1. θ
2. For θ
3. All voltages are with respect to GND.
ISL6840, ISL6841. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V to 14V
ISL684xIx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
ISL6843, ISL6845. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V to 16V
ISL6842, ISL6844. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V to 18V
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
PARAMETER
DD
DD
DD
. . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V
D
ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845
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Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” and “Typical
Application” schematic on pages 3 and 4. V
values are at T
specified. Temperature limits established by characterization and are not production tested.
V
(Note 4)
Includes 1nF GATE loading
Over line (V
temperature
T
V
V
V
A
A
DD
CS
CS
CS
= +25°C. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise
= +125°C, 1000 hours (Note 5)
= 1V
= 0V (Note 5)
= 0V (Note 5)
< START Threshold
TEST CONDITIONS
DD
DD
+ 0.3V
= 12V to 18V), load,
DD
Thermal Information
Thermal Resistance (Typical)
Maximum Junction Temperature . . . . . . . . . . . . . . .-55°C to +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below
DFN Package (Notes 1, 2) . . . . . . . . . .
SOIC Package (Note 1) . . . . . . . . . . . .
MSOP Package (Note 1) . . . . . . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
= 15V (Note 6), R
4.925
13.3
4.40
4.60
0.80
0.91
MIN
-1.0
6.5
7.8
6.1
6.7
8.0
-20
50
95
5
-
-
-
-
-
-
-
t
= 10kΩ, C
5.000
TYP
14.3
4.65
4.80
1.15
0.97
165
100
7.0
8.4
6.6
7.2
8.8
0.4
0.8
5.4
3.3
4.1
60
5
-
-
-
t
= 3.3nF, T
VREF - 0.05
A
5.050
MAX
θ
15.3
4.85
1.30
1.03
100
250
105
7.5
9.0
6.9
7.7
9.6
4.0
5.5
1.0
= -40 to +105°C Typical
JA
-
-
-
-
-
-
130
100
(°C/W)
77
August 7, 2008
θ
UNITS
JC
mA
mA
mV
mV
mA
mA
mV
µA
µA
FN9124.10
V
V
V
V
V
V
V
V
V
V
V
V
V
V
N/A
N/A
(°C/W)
6