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R1122N Datasheet(PDF) 20 Page - RICOH electronics devices division

Part No. R1122N
Description  LOW NOISE 150mA LDO REGULATOR
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Maker  RICOH [RICOH electronics devices division]
Homepage  http://www.ricoh.com
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R1122N Datasheet(HTML) 20 Page - RICOH electronics devices division

 
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R1122N
20
TECHNICAL NOTES
Ceramic
Cap.
Ceramic
Cap.
Spectrum
Analyzer
IOUT
VDD
GND
VOUT1
CE
R1122Nxx1B
ESR
4
S.A
3
1
2
VIN
Measuring Circuit for white noise; R1122N301B
The relationship between IOUT (output current) and ESR of the output capacitor is shown in the graphs below.
The conditions when the white noise level is under 40
μV (Avg.) are indicated by the hatched area in the graph.
(Note: When additional ceramic capacitors are connected to the output pin with the output capacitor for phase
compensation, operation might be unstable. Because of this, test these ICs with the same external components
as the ones to be used on the PCB.)
<Measuring Conditions>
(1)VIN=VOUT+1V
(2)Frequency band: 10Hz to 1MHz
(3)Temperature: 25°C


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