参数资料
| 型号： | CAT102TDI-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC ADJ TSOT-23-5 |
| 标准包装： | 1 |
| 基准类型： | 旁路，可调节，精度 |
| 输出电压： | 可调至 0.6V |
| 容差： | ±6mV |
| 输入电压： | 2.2 V ~ 18 V |
| 通道数： | 1 |
| 电流 - 阴极： | 500µA |
| 电流 - 输出： | 20mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | CAT102TDI-GT3OSDKR |
CAT102
APPLICATIONS INFORMATION
The CAT102 adjustable shunt regulator features
isolated supply inputs and outputs, ideal for isolated
power-supply applications using an optocoupler in
the feedback path. The CAT102 sinks 20 mA with
V OUT at 0.3 V. The wide input supply range allows
the device to operate from 2.2 V to 18 V. The
The current limit can be adjusted by using a resistor R3
connected between the IN and OUT pins. For example,
a 3.3 V supply V IN is associated with R 3 = 135 ? , and a
10 V supply works best with R 3 = 470 ? . The CAT102
shunt regulator is limited to low-current applications with
the OUT pin capable of sinking up to 20 mA max.
CAT102 compares the FB input to a precision
600mV reference. If the FB input is low, the OUT pin
sinks no current. If FB rises above 600 mV, the OUT
pin sinks up to 20 mA.
Figure 1 shows the CAT102 configured as a shunt
regulator. To generate an output voltage of 0.6 V,
the FB pin has to be directly connected to the OUT
pin. A 1.0 μF capacitor from OUT to GND is
recommended when the output voltage is 0.6 V. A
resistor-divider connected from OUT to GND is used
to produce a higher output voltage as set by the
following equation:
V OUT = (1 + R 1 /R 2 ) x 0.6 V
Figure 1. Application circuits for 0.6 V output and 1.2 V output voltages
V IN
3.3V
R 3
V OUT
0.6V/20mA
C 1
5
IN
OUT
3
C 2
V IN
0.1μF
2
CAT102
GND FB
R 3
1
1μF
V OUT = (1 + R 1 /R 2 ) x 0.6V
3.3V
1.2V/20mA
5
IN
OUT
3
C 1
0.1μF
2
CAT102
GND FB
1
R 1
10k ?
C 2
1μF
R 2
10k ?
Doc. No. MD-4007 Rev. P
4
? 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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| CAT10-330J4LF | 功能描述:电阻器网络与阵列 33ohm 5% Concave 4resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel |
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