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参数资料
| 型号： | RP502L081B-TR |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 3960 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 1.60 X 1.60 MM, HALOGEN FREE AND ROHS COMPLIANT, DFN-6 |
| 文件页数： | 3/30页 |
| 文件大小： | 1222K |
| 代理商： | RP502L081B-TR |
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RP502x
11
TECHNICAL NOTES
When using the R502x Series, consider the following points:
Set AGND in the same level as PGND.
Set external components such as an inductor, C
IN, and COUT as close as possible to the ICs. VIN, CIN and GND
have to be wired as close as possible. If the impedances of VIN line and GND line are high, the switching
current will fluctuate the electric potential of the inside the ICs. As a result, the operation may become unstable.
The impedances of power supply line and GND line must be as low as possible. Please note that a large
current caused by the switching current flows into VIN, GND, Inductor, LX, and VOUT. Separate the wiring
between VOUT pin and inductor from the wiring of load.
For C
IN, use a ceramic capacitor with a low ESR. The recommended condenser capacity for CIN is 4.7F or
more. Also, the recommended condenser capacity for COUT is 4.7F.
Choose an inductor from the range of 1.0 to 2.2H. The internal phase compensation has been determined
based on the above-mentioned inductor value and the COUT value. For stable operation, these conditions are
necessary. Choose an inductor that is low DC resistance, has enough permissive current, and is strong
against magnetic saturation. Decide the inductance value with consideration of the load current under the
condition of use. If the inductance value is low, the peak value of LX current may increase along with the
increase of the load current. As a result, the peak value of LX may reach to the “LX Limit Current” and may
trigger the overcurrent protection circuit.
Please note that overcurrent protection circuit may be affected by self-heating and heat radiation
environment.
The performance of power source circuits using these ICs largely depends upon the peripheral circuits.
Pay attention to the setting of the peripheral components. In particular, when designing the peripheral circuit,
the constant values (voltage, current and power) for each part, PCB pattern and the ICs should not be
exceeded.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RP502U | 制造商:n/a 功能描述:ALLEN BRADLEY S7C8A |
| RP503U | 制造商:n/a 功能描述:BOURN S7E9B |
| RP50-4805S | 制造商:RECOM 制造商全称:Recom International Power 功能描述:50 Watt Single Output |
| RP50-4805SB | 制造商:RECOM 制造商全称:Recom International Power 功能描述:50 Watt Single Output |
| RP50-4805SBP | 制造商:RECOM 制造商全称:Recom International Power 功能描述:50 Watt Single Output |
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