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参数资料
| 型号： | ISL6443IR |
| 厂商： | Intersil |
| 文件页数： | 5/18页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR SGL/STEP DOWN PWM 28QFN |
| 标准包装： | 60 |
| 应用： | 电源 |
| 电流 - 电源： | 50µA |
| 电源电压： | 5.6 V ~ 24 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
ISL6443
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VCC_5V Pin) . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
Thermal Resistance (Typical)
θ JA (°C/W)
θ JC (°C/W)
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
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
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:
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
V IN > 5.6V, I L = 20mA
V IN = 12V
4.5
60
5.0
-
5.5
-
V
mA
SUPPLY CURRENT
Shutdown Current (Note 4)
Operating Current (Note 5)
SD1 = SD2 = GND
-
-
50
2.0
375
4.0
μ A
mA
REFERENCE SECTION
Nominal Reference Voltage
Reference Voltage Tolerance
-
-1.0
0.8
-
-
1.0
V
%
POWER-ON RESET
Rising VCC_5V Threshold
Falling VCC_5V Threshold
4.25
3.95
4.45
4.2
4.5
4.4
V
V
OSCILLATOR
Total Frequency Variation
260
300
340
kHz
Peak-to-Peak Sawtooth Amplitude (Note 6)
V IN = 12V
-
1.6
-
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
V IN = 5V
-
-
-
4.16
3.5
-
10
V CC - 0.6V
0.667
1.0
-
4.8
-
-
-
-
-
-
10.0
5.44
-
1.5
-
-
V
V
ns
MHz
V
V
ns
V
SHUTDOWN1/SHUTDOWN2
HIGH Level (Converter Enabled)
LOW Level (Converter Disabled)
Internal Pull-up (3 μ A)
2.0
-
-
-
-
0.8
V
V
5
FN9044.2
August 9, 2006
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