參數(shù)資料
型號(hào)： RP500N313A-TR-F
廠商： RICOH COMPANY LTD
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.9 A SWITCHING REGULATOR, 1440 kHz SWITCHING FREQ-MAX, PDSO6
封裝： LEAD FREE, SOT-23, 6 PIN
文件頁(yè)數(shù)： 24/24頁(yè)
文件大?。?/td> 664K
代理商： RP500N313A-TR-F
RP500x
9
TYPICAL APPLICATION
VIN
CE
LX
VOUT
PGND
AGND
VIN
CIN
10
μF
COUT
10
μF
VOUT
4.7
μH
RP500x
Series
Symbol
Parts Recommendation
CIN
10
μF
Ceramic
C2012JB0J106K (TDK)
COUT
10
μF
Ceramic
C2012JB0J106K (TDK)
L
4.7
μF
VLF3010AT-4R7MR30
TECHNICAL NOTES
When using these ICs, consider the following points:
Set the same level as AGND and PGND.
Set external components such as an inductor, C
IN
, COUT as close as possible to the IC, in particular, minimize
the wiring to VIN pin and PGND pin. Reinforce the VIN, PGND, and VOUT lines sufficiently. Large switching
current may flow in these lines. If the impedance of VIN and PGND lines is too large, the internal voltage level in
this IC may shift caused by the switching current, and the operation might be unstable. The wiring between
VOUT and load and between L and VOUT should be separated.
Use an external capacitor C
IN
between VIN and GND, and COUT with a capacity of 10F or more ceramic type.
Choose an inductor with inductance range from 4.7μH to 10μH. The phase compensation has been made by
these values with output capacitors. The recommendation characteristics of the inductor are low DC resistance,
large enough permissible current, and strong against the magnetic saturation. Inductance value may shift
depending on an inductor. If the inductance value at an actual load current is low, Lx peak current may
increase and may overlap the Lx current limit. As a result, over current protection may work.
Over current protection circuit may be affected by self-heating and heat radiation environment.
The performance of power source circuits using these ICs extremely depends upon the peripheral circuits.
Pay attention 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. (such as the voltage, current, and power)
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