参数资料
型号: ZXRE060H5TA
厂商: Diodes Inc
文件页数: 8/12页
文件大小: 0K
描述: IC VREF SHUNT PREC ADJ SC-70-5
标准包装: 1
基准类型: 旁路,可调节,精度
输出电压: 0.2 V ~ 18 V
容差: ±1%
输入电压: 2 V ~ 18 V
通道数: 1
电流 - 阴极: 300µA
电流 - 输出: 15mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 6-TSSOP(5 引线),SC-88A,SOT-353
供应商设备封装: SC-70-5
包装: 标准包装
产品目录页面: 1476 (CN2011-ZH PDF)
其它名称: ZXRE060H5DIDKR
A Product Line of
Diodes Incorporated
ZXRE060
0.6V ADJUSTABLE PRECISION SHUNT REGULATOR
Application Information (Continued)
V OUT = V REF ? 1 +
?
?
?
R1 ?
R 2 ?
( V OUT ≥ 0 . 2 V + V BE )
Figure 7. 1V Current-boosted shunt regulator
Design guides
R 3 =
VIN ? VOUT
I R 3
1.
2.
Determine I OUT and choose a suitable transistor taking power dissipation into consideration.
Determine I B from I B = I OUT (max)
( h FE (min) + 1 )
3.
Determine I R3 from
I R 3 = I OUT (max)
4.
Determine R3 from
R 3 =
VIN ? VOUT
I R 3
5.
6.
It is best to let the ZXRE060 supply as much current as it can before bringing Q1 into conduction. Not
only does this minimise the strain on Q1, it also guarantees the most stable operation. Choose a nominal
value between 10mA and <15mA for this current, I R4 .
Calculate R4 from R 4 = VBE
I R 4
V OUT goes low and LED is lit when monitored supply
V M > V REF ? 1 +
?
?
?
R1 ?
R 2 ?
R 3 = IN
V
? ( V F + 0 . 2 )
I R 3
15 mA ≥ I R 3 ≤ I F ( MAX )
V F and I F are forward voltage drop and current of LED1.
Figure 8. 1.15V over-voltage indicator
ZXRE060
Document number: DS33611 Rev. 6 - 2
8 of 12
March 2011
? Diodes Incorporated
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