參數(shù)資料
型號(hào): R1160N331B-TR
廠商: RICOH COMPANY LTD
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: SOT23-5 3-MODE 200mA LDO REGULATOR
中文描述: 3.3 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5
封裝: SC-74A, MINI, SOT-23, 5 PIN
文件頁(yè)數(shù): 6/27頁(yè)
文件大?。?/td> 1077K
代理商: R1160N331B-TR
Rev. 1.10
- 6 -
I
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be
sure to use a 2.2
μ
F or more capacitor C
OUT
with good frequency characteristics and ESR (Equivalent Series Resistance).
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation,
the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the
PCB.)
PCB Layout
Make V
DD
and GND line sufficient. When the impedance of these is high, it would be a cause of picking up the noise or
unstable operation. Connect a capacitor with as much as 1.0
μ
F capacitor between V
DD
and GND pin as close as possible.
Set external components, especially output capacitor as close as possible to the ICs and make wiring shortest.
I
TEST CIRCUITS
C1
C2
V
IN
A
I
OUT
C2 = Tantal2.2
μ
:*1 C1 = Tantal1.0
μ
*1
1 VDD
R1160XXX1X
ECO 4
OUT 5
3 CE
2 GND
SERIES
Fig.1 Output Voltage vs. Output Current Test Circuit
C1
C2
V
C2 = Tantal 2.2
μ
F
C1 = Tantal 1.0
μ
F
1 VDD
R1160XXX1X
SERIES
ECO 4
OUT 5
3 CE
2 GND
Fig.2 Output Voltage vs. Input Voltage Test Circuit
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