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參數(shù)資料
| 型號： | R1230D131E-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 575 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.9 MM HEIGHT, SON-8 |
| 文件頁數(shù)： | 2/26頁 |
| 文件大?。?/td> | 284K |
| 代理商： | R1230D131E-TR |
R1230D
10
When you use these ICs, consider the following issues;
Input same voltage into the power supply pins, VIN and VDD. Set the same level as AGND and PGND.
When you control the CE pin and MODE pin by another power supply, do not make its "H" level more than the volt-
age level of VIN / VDD pin.
Set external components such as an inductor, CIN, COUT as close as possible to the IC, in particular, minimize the
wiring to VIN pin and PGND pin.
At stand by mode, (CE="L"), the LX output is Hi-Z, or both P-channel transistor and N-channel transistor of LX pin
turn off.
Use an external capacitor COUT with a capacity of 10F or more, and with good high frequency characteristics such
as tantalum capacitors.
At VFM mode, (MODE="H"), Latch protection circuit does not operate.
If the mode is switched over into PWM mode from VFM mode during the operation, change the mode at light load
current. If the load current us large, output voltage may decline.
Reinforce the VIN, PGND, and VOUT lines sufficiently. Large switching current may flow in these lines. If the imped-
ance of VIN and PGND lines is too large, the internal voltage level in this IC may shift caused by the switching cur-
rent, and the operation might be unstable.
The performance of power source circuits using these ICs extremely depends upon the peripheral circuits. Pay at-
tention in the selection of the peripheral circuits. In particular, design the peripheral circuits in a way that the values
such as voltage, current, and power of each component, PCB patterns and the IC do not exceed their respected
rated values.
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