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参数资料
| 型号： | RH5RI422B-T2 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | 0.05 A SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封装： | SOT-89, 3 PIN |
| 文件页数： | 17/24页 |
| 文件大小： | 179K |
| 代理商： | RH5RI422B-T2 |
RH5RI
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When using these ICs, be sure to take care of the following points :
Set external components as close as possible to the IC and minimize the connection between the com-
ponents and the IC. In particular, when an external component is connected to OUT Pin, make mini-
mum connection with the capacitor.
Make sufficient grounding. A large current flows through Vss Pin by switching. When the impedance
of the Vss connection is high, the potential within the IC is varied by the switching current. This
mayresult in unstable operation of the IC.
Use capacitor with a capacity of 10F or more, and with good high frequency characteristics such as
tantalum capacitor. We recommend the use of a capacitor with an allowable voltage which is at least
three times the output set voltage. This is because there may be the case where a spike-shaped high
voltage is generated by the inductor when Lx transistor is turned off.
Take the utmost care when choosing an inductor. Namely, choose such an inductor that has sufficient-
ly small d.c. resistance and large allowable current, and hardly reaches magnetic saturation. When
the inductance value of the inductor is small, there may be the case where ILX exceeds the absolute
maximum ratings at the maximum load. Use an inductor with an appropriate inductance (refer to
Selectionof peripheral components).
Use a diode of a Schottky type with high switching speed, and also take care of the rated current (refer
to Selection of peripheral components).
The performance of power source circuits using these ICs largely depends upon the peripheral components. Take the utmost care
in the selection of the peripheral components. In particular, design the peripheral circuits in such a manner that the values such as volt-
age, current and power of each component, PCB patterns and the IC do not exceed their respective rated values.
APPLICATION HINTS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RH5RI423B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RH5RI431A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RH5RI432B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RH5RI433B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RH5RI441A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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