ISL6443 Intersil Corporation, ISL6443 Datasheet - Page 5

• Manufacturer Part Number: ISL6443
• Description: Step- Down PWM and Single Linear Controller
• Manufacturer: Intersil Corporation

Absolute Maximum Ratings
Supply Voltage (VCC_5V Pin) . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
Input Voltage (V
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)
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:
Electrical Specifications
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)
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)
1. θ
the “case temp” location is the center of the exposed metal pad on the underside of the package. See Tech Brief TB379.
JC
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. For θ
IN
Pin). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+27V
PARAMETER
5
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V
Typical values are at T
IN
= 5.6V to 24V, or VCC_5V = 5V ±10%, T
V
V
SD1 = SD2 = GND
V
V
Internal Pull-up (3µA)
IN
IN
IN
IN
A
> 5.6V, I
= 12V
= 12V
= 5V
= 25°C
TEST CONDITIONS
ISL6443
L
= 20mA
Thermal Information
Thermal Resistance (Typical)
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
28 Lead QFN (Note 1) . . . . . . . . . . .
A
V
= -40°C to 85°C (Note 2),
CC
MIN
4.25
3.95
4.16
-1.0
260
5.6
4.5
4.5
3.5
2.0
60
10
- 0.6V
-
-
-
-
-
-
-
-
-
0.667
TYP
4.45
300
5.0
5.0
2.0
0.8
4.2
1.6
1.0
4.8
12
50
-
-
-
-
-
-
-
-
-
θ
JA
MAX
10.0
5.44
375
340
5.6
5.5
4.0
1.0
4.5
4.4
1.5
0.8
24
(°C/W)
36
-
-
-
-
-
-
-
-
-
August 9, 2006
θ
JC
UNITS
MHz
kHz
mA
mA
µA
ns
ns
%
FN9044.2
5.5
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(°C/W)
JA