参数资料
型号: ISL9443IRZ-T
厂商: Intersil
文件页数: 12/23页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 32-QFN
标准包装: 6,000
PWM 型: 电流模式
输出数: 3
频率 - 最大: 1.32MHz
电源电压: 4.5 V ~ 26 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: *
包装: *
ISL9443
Typical Performance Curves Oscilloscope plots are taken using the ISL9443EVAL1Z Evaluation Board,
V IN = 12V, V OUT1 = 0.9V, V OUT2 = 1.0V, V OUT3 = 0.9V unless otherwise noted.
33.0
32.5
32.0
31.5
5.3
5.1
4.9
V IN = 28V
31.0
30.5
4.7
4.5
V IN = 4.5V
30.0
-40
-20
0
20 40 60
80
100
4.3
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
FIGURE 2. SHUTDOWN CURRENT vs TEMPERATURE
6
5
TEMPERATURE (°C)
FIGURE 3. QUIESCENT CURRENT vs TEMPERATURE
1.6
4
3
1.2
0.8
CHANNELS 1 AND 3
CHANNEL 2
2
0.4
1
0
0
50
100
150
200
250
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
VCC5V LOAD CURRENT (mA)
FIGURE 4. VCC5V LOAD REGULATION
SOFT-START PIN VOLTAGE (V)
FIGURE 5. SOFT-START PIN CHARGING CURRENT vs VOLTAGE ON
SOFT-START PIN
120
100
CHANNELS 2 AND 3
PWM1
80
PWM2
60
40
CHANNEL 1
PWM3
20
TIME AT 1μs/DIV
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
SOFT-START PIN VOLTAGE (V)
FIGURE 6. NORMALIZED OUTPUT VOLTAGE VS VOLTAGE ON
SOFT-START PIN
12
FIGURE 7. PHASE NODE WAVEFORMS
FN7663.1
February 24, 2012
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