参数资料
型号: SPX2431AM-L
厂商: Exar Corporation
文件页数: 6/9页
文件大小: 0K
描述: IC VREF SHUNT PREC ADJ SOT-23-3
标准包装: 1
基准类型: 旁路,可调节,精度
输出电压: 2.5 V ~ 36 V
容差: ±0.5%
温度系数: 30ppm/°C
输入电压: 高达 36V
通道数: 1
电流 - 阴极: 1mA
电流 - 输出: 150mA
工作温度: -55°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-236-3,SC-59,SOT-23-3
供应商设备封装: SOT-23-3
包装: 散装
其它名称: 1016-1408
TYPICAL PERFORMANCE CHARACTERISTICS
100
150 ?
T A = 25 ° C
I K = 1 to 100mA
I K
R
10
C L
1.0
10k ?
0.1
0.01
1K
10K
100K 1M
10M
f Frecuency (Hz)
Figure 17. Test Circuit for Stability
Figure 18. Dynamic Output Impedance T A = 25 ° C,
I K = 1 to 100mA
100
V IN
R3
V OUT
10
1
V KA = 20V
V REF = 0V
R1
0.1%
0.1
0.01
V REF
R2
0.1%
SPX2431
-50
0
50
100
150
T A Ambient Temperature ( ° C)
Figure 19. Off State Leakage
V IN
I SINK
Figure 20. Shunt Regulator V OUT = (1+R1/R2)V REF
V OUT
R2
Q1
Opto Isolator
R3
R1
0.1%
SPX2431
Isolated
Feedback
C1
R3 sets feedback gain,
C1 provides feedback
compensation
R1
0.1%
C2
+
SPX2431
V OUT RTN
R2
0.1%
Figure 21. Constant Current, Sink, I SINK = V REF /R1
Figure 22. Reference Amplifier for Isolated Feedback in
Off-Line DC-DC Converters
Date: 1/19/05
SPX2431 Precision Adjustable Shunt Regulator
6
? Copyright 2005 Sipex Corporation
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