參數(shù)資料
型號(hào)： R1172N161D-TR-FE
廠商： RICOH COMPANY LTD
元件分類(lèi)： 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述： FIXED POSITIVE LDO REGULATOR, PDSO5
封裝： HALOGEN FREE AND ROHS COMPLIANT, SOT-23, 5 PIN
文件頁(yè)數(shù)： 24/25頁(yè)
文件大小： 511K
代理商： R1172N161D-TR-FE
R1172x
8
TYPICAL APPLICATION (R1172xxx1B/D)
C1
R1172x
Series
VDD
VOUT
CE
GND
C2
VOUT
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, use a capacitor C2 with good frequency characteristics and ESR (Equivalent Series Resistance).
The recommendation value is as follows.
Output Voltage C2 recommendation value
Components Recommendation
VOUT < 1.0V
Tantalum 4.7
μF or more
1.0 <
= VOUT <
= 3.3V
Ceramic 4.7
μF or more
Kyocera
Murata
4.7
μF (1608)
4.7
μF (1608)
10
μF (1608)
Part Number : CM105X5R475M06AB
Part Number : GRM188R60J475KE19B
Part Number : GRM188B30G106ME46B
3.3V < VOUT
Ceramic 4.7
μF or more
Kyocera
Murata
4.7
μF (thin 2012)
10
μF (2012)
Part Number : CT21X5R475M06AB
Part Number : GRM21BB30J106K
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with a capacitance value as much as 4.7
μF or more between VDD and GND pin, and as
close as possible to the pins.
Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring
as short as possible.
If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable.
Evaluate your circuit with considering frequency characteristics.
Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature
characteristics are different. Evaluate the circuit with actual using capacitors.
相關(guān)PDF資料
PDF描述
R1172N171D-TR-FE FIXED POSITIVE LDO REGULATOR, PDSO5
R1172N181A-TR-FE FIXED POSITIVE LDO REGULATOR, PDSO5
R1172N181B-TR-FE FIXED POSITIVE LDO REGULATOR, PDSO5
R1172N191A-TR-FE FIXED POSITIVE LDO REGULATOR, PDSO5
R1172N191B-TR-FE FIXED POSITIVE LDO REGULATOR, PDSO5
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R1172N171A 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
R1172N171B 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
R1172N171D 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
R1172N181A 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
R1172N181A5 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
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