R1173 Datasheet, PDF (24/26 Pages) RICOH electronics devices division – Super low on resistance/Low voltage LDO

R1173x
16) Stable Area: ESR limit vs. Load current
0.8V to 3.3V Output type : COUT=4.7μF (Kyocera CM105X5R475M06AB)
5.0V Output type
: COUT=4.7μF(Kyocera CT21X5R475K06AB)
VIN
CIN
CE
VOUT
R1173xxx1B
VIN
GND
COUT
ESR
IOUT
Measurement Conditions
⋅ VIN=VOUT+1V
⋅ Freguency=10Hz to 1MHz
⋅ Topt=25°C
S.A ^Spectrum
Analyzer
As an output capacitor for this IC, Ceramic capacitor is recommendable. However, other low ESR type
capacitor can be used with this IC.
For your reference, noise level is tested, and if the noise level is 40μV or less than 40μV, the ESR values are
plotted as stable area. Upper limit is described in the next five graphs, or ESR vs. Output Current. (Hatched area
is the stable area.)
R1173x081x
VIN=1.4V to 6.0V,
CIN=COUT=Ceramic 4.7μF
100
Topt=85°C
10
Topt=-40°C
1
R1173x081x
VIN=1.4V to 6.0V,
CIN=Ceramic 4.7μF,COUT=Ceramic 10μF
100
Topt=85°C
10
Topt=-40°C
1
0.1
0.1
0.01
0
200 400 600 800 1000
Load Current IOUT(mA)
0.01
0
200 400 600 800 1000
Load Current IOUT(mA)
24