ISL6443
Absolute Maximum Ratings
Supply Voltage (VCC_5V Pin) . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
Input Voltage (V
IN
Pin). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+27V
BOOT1, 2 and UGATE1, 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . +35V
PHASE1, 2 and ISEN1, 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . +27V
BOOT1, 2 with Respect to PHASE1, 2 . . . . . . . . . . . . . . . . . . +6.5V
UGATE1, 2. . . . . . . . . . . . (PHASE1, 2 - 0.3V) to (BOOT1, 2 +0.3V)
Thermal Information
Thermal Resistance (Typical)
θ
JA
(°C/W)
θ
JC
(°C/W)
28 Lead QFN (Note 1) . . . . . . . . . . .
36
5.5
Maximum Junction Temperature (Plastic Package) . -55°C to 150°C
Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
θ
JC
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. For
θ
JA
the “case temp” location is the center of the exposed metal pad on the underside of the package. See Tech Brief TB379.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V
IN
= 5.6V to 24V, or VCC_5V = 5V ±10%, T
A
= -40°C to 85°C (Note 2),
Typical values are at T
A
= 25°C
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
VIN SUPPLY
Input Voltage Range
VCC_5V SUPPLY
(Note 3)
Input Voltage
Output Voltage
Maximum Output Current
SUPPLY CURRENT
Shutdown Current (Note 4)
Operating Current (Note 5)
REFERENCE SECTION
Nominal Reference Voltage
Reference Voltage Tolerance
POWER-ON RESET
Rising VCC_5V Threshold
Falling VCC_5V Threshold
OSCILLATOR
Total Frequency Variation
Peak-to-Peak Sawtooth Amplitude (Note 6)
5.6
12
24
V
4.5
V
IN
> 5.6V, I
L
= 20mA
V
IN
= 12V
4.5
60
5.0
5.0
-
5.6
5.5
-
V
V
mA
SD1 = SD2 = GND
-
-
50
2.0
375
4.0
µA
mA
-
-1.0
0.8
-
-
1.0
V
%
4.25
3.95
4.45
4.2
4.5
4.4
V
V
260
V
IN
= 12V
V
IN
= 5V
-
-
-
-
4.16
3.5
-
10
V
CC
- 0.6V
300
1.6
0.667
1.0
-
4.8
-
-
-
-
340
-
-
-
10.0
5.44
-
1.5
-
-
kHz
V
V
V
ns
MHz
V
V
ns
V
Ramp Offset (Note 7)
SYNC Input Rise/Fall Time (Note 7)
SYNC Frequency Range
SYNC Input HIGH Level
SYNC Input LOW Level
SYNC Input Minimum Pulse Width (Note 7)
SYNC Output HIGH Level
SHUTDOWN1/SHUTDOWN2
HIGH Level (Converter Enabled)
LOW Level (Converter Disabled)
Internal Pull-up (3µA)
2.0
-
-
-
-
0.8
V
V
5
FN9044.1
October 4, 2005
INTERSIL [ INTERSIL CORPORATION ]
