参数资料
型号: ISL6445IAZ-TK
厂商: Intersil
文件页数: 7/15页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 24-QSOP
标准包装: 1
PWM 型: 电流模式
输出数: 2
频率 - 最大: 1.55MHz
占空比: 73%
电源电压: 4.5 V ~ 24 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: 24-SSOP(0.154",3.90mm 宽)
包装: 标准包装
其它名称: ISL6445IAZ-TKDKR
ISL6445
Typical Performance Curves
V OUT1 200mV/DIV
AC COUPLED
I OUT1 1A/DIV
Oscilloscope plots are taken using the ISL6445EVAL Evaluation Board.
V OUT2 200mV/DIV
AC COUPLED
I OUT2 1A/DIV
FIGURE 7. LOAD TRANSIENT RESPONSE V OUT1 (3.3V)
FIGURE 8. LOAD TRANSIENT RESPONSE V OUT2 (1.2V)
V OUT1 2V/DIV
VCC_5V 1V/DIV
I L1 2A/DIV
SS1 2V/DIV
V OUT1 1V/DIV
FIGURE 9. PWM SOFT-START WAVEFORM
100
90
80
FIGURE 10. OVERCURRENT HICCUP MODE OPERATION
100
90
80
70
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
70
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LOAD CURRENT (A)
FIGURE 11. PWM1 EFFICIENCY vs LOAD (3.3V), V IN = 5V
7
LOAD CURRENT (A)
FIGURE 12. PWM2 EFFICIENCY vs LOAD (3.3V), V IN = 5V
FN9230.1
June 3, 2008
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