ISL6443A Datasheet, PDF (5/19 Pages) Intersil Corporation – 300kHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6443A
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
. . . . . . . . . . . . . . . . . . . . .-5V (<100ns, 10µJ)/-0.3V (DC) to +27V
BOOT1, 2 with Respect to PHASE1, 2 . . . . . . . . . . . . . . . . . . +6.5V
UGATE1, 2. . . . . . . . . . . .(PHASE1, 2 - 0.3V) to (BOOT1, 2 + 0.3V)
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200V
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
28 Lead QFN (Notes 1, 2) . . . . . . . .
36
4
28 Lead TSSOP (Note 1) . . . . . . . . .
75
NA
Maximum Junction Temperature . . . . . . . . . . . . . . .-55°C to +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°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.
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.
2. θ_JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Block Diagram” on page 3 and “Typical
Application Schematic” on page 4. V_IN = 5.6V to 24V, or VCC_5V = 5V ±10%, T_A = -40°C to +85°C (Note 6),
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
Input Voltage Range
VCC_5V SUPPLY (Note 3)
V_IN = VCC (Note 3)
4.5
5.0
5.6
V
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 6)
V_IN = 12V
V_IN = 5V
-
1.6
-
V
-
0.667
-
V
-
1.0
-
V
SYNC Input Rise/Fall Time (Note 6)
-
5.0
-
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
5
FN6600.1
December 7, 2007