参数资料
型号: IRDC3870
厂商: International Rectifier
文件页数: 8/20页
文件大小: 0K
描述: BOARD EVAL REG SUPIRBUCK DC/DC
产品变化通告: (EP) Parts Discontinuation 25/May/2012
标准包装: 1
系列: *
IR3870MPBF
TYPICAL OPERATING DATA (25 o C)
(Circuit of Figure 15, VCC = 3.3V, V5 = 5V, V IN = 12.6V, F = 500kHz Unless otherwise noted)
1.11400
1.10900
88
87
Eff: 12.6Vin
Eff: 19Vin
Ploss: 12.6Vin
Ploss: 19Vin
0.5
0.5
0.4
86
0.4
1.10400
85
0.3
84
0.3
1.09900
83
0.2
1.09400
19Vin
82
0.2
0.1
1.08900
0
2
4
6
8
12.6Vin
10
12
81
80
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.1
0.0
1.8
Output Current (A)
Figure 5. Output Voltage Regulation Vs
Output Current
Output Current(A)
Figure 7. Light load Efficiency: V OUT = 1.1V
Eff: 12.6Vin
Eff: 19Vin
Ploss: 12.6Vin
Ploss: 19Vin
90
3.5
16
0.080
89
3.0
14
0.070
88
87
2.5
12
0.060
86
2.0
10
0.050
85
8
0.040
84
1.5
6
0.030
83
82
1.0
4
Vin Ploss
0.020
81
0.5
2
5V PVcc Ploss
3.3V Vcc Ploss
0.010
80
0.0
0
0.000
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Output Current(A)
Figure 6. System Efficiency: V OUT = 1.1V
Output Current(A)
Figure 8. Input Power Vs Output Current
8
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