ISL6443_06 Datasheet, PDF (5/18 Pages) Intersil Corporation – 300kHz Dual, 180° Out-of-Phase, Step- Down PWM and Single Linear Controller

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
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VIN SUPPLY
Input Voltage Range
5.6
12
24
V
VCC_5V SUPPLY (Note 3)
Input Voltage
4.5
5.0
5.6
V
Output Voltage
Maximum Output Current
SUPPLY CURRENT
V_IN > 5.6V, I_L = 20mA
V_IN = 12V
4.5
5.0
5.5
V
60
-
-
mA
Shutdown Current (Note 4)
SD1 = SD2 = GND
-
50
375
µA
Operating Current (Note 5)
-
2.0
4.0
mA
REFERENCE SECTION
Nominal Reference Voltage
-
0.8
-
V
Reference Voltage Tolerance
-1.0
-
1.0
%
POWER-ON RESET
Rising VCC_5V Threshold
4.25
4.45
4.5
V
Falling VCC_5V Threshold
3.95
4.2
4.4
V
OSCILLATOR
Total Frequency Variation
260
300
340
kHz
Peak-to-Peak Sawtooth Amplitude (Note 6)
Ramp Offset (Note 7)
V_IN = 12V
V_IN = 5V
-
1.6
-
V
-
0.667
-
V
-
1.0
-
V
SYNC Input Rise/Fall Time (Note 7)
-
-
10.0
ns
SYNC Frequency Range
4.16
4.8
5.44
MHz
SYNC Input HIGH Level
3.5
-
-
V
SYNC Input LOW Level
-
-
1.5
V
SYNC Input Minimum Pulse Width (Note 7)
10
-
-
ns
SYNC Output HIGH Level
SHUTDOWN1/SHUTDOWN2
V_CC - 0.6V
-
-
V
HIGH Level (Converter Enabled)
Internal Pull-up (3µA)
2.0
-
-
V
LOW Level (Converter Disabled)
-
-
0.8
V
5
FN9044.2
August 9, 2006