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參數(shù)資料
| 型號(hào)： | ISL6445 |
| 廠商： | Intersil Corporation |
| 英文描述： | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller |
| 中文描述： | 1.4MHz的雙路，180 °異相，降壓型PWM控制器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大小： | 353K |
| 代理商： | ISL6445 |
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4
FN9230.0
September 9, 2005
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VCC_5V Pin) . . . . . . . . . . . . . . . . . . . .-0.3V to +7V
Input Voltage (VIN 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 Resistance (Typical)
24 Lead QSOP (Note 1). . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package) .-55°C to 150°C
Maximum Storage Temperature Range. . . . . . . . . . .-65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300°C
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
θ
JA
(°C/W)
85
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
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 and Typical Application
Schematic. V
IN
= 5.6V to 24V, or VCC5 = 5V ±10%, T
A
= -40°C to 85°C (Note 3),
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
V
IN
> 5.6V, I
L
= 20mA
4.5
5.0
5.5
V
Maximum Output Current
V
IN
= 12V
60
-
-
mA
SUPPLY CURRENT
Shutdown Current (Note 4)
SD1 = SD2 = GND
-
50
375
μ
A
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
1.25
1.4
1.55
MHz
Peak-to-Peak Sawtooth Amplitude (Note 6)
V
IN
= 12V
-
1.6
-
V
V
IN
= 5V
-
0.667
-
V
Ramp Offset (Note 7)
-
1.0
-
V
SHUTDOWN1/SHUTDOWN2
HIGH Level (Converter Enabled)
Internal Pull-up (3
μ
A)
2.0
-
-
V
LOW Level (Converter Disabled)
-
-
0.8
V
PWM CONVERTERS
Output Voltage
-
0.8
-
V
FB Pin Bias Current
-
-
150
nA
Maximum Duty Cycle
Cout = 1000pF, T
A
= 25°C
93
-
-
%
Minimum Duty Cycle
-
4
-
%
ISL6445
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