R1171S151A Datasheet, PDF (16/36 Pages) RICOH electronics devices division – 2.0A/1.5A LDO REGULATOR

R1172x
90
80
70
60
50
40
30
20
10
0
0.1
R1172x301x
VIN=4.0VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
90
80
70
60
50
40
30
20
10
0
0.1
R1172x401x
VIN=5.0VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
80
70
60
50
40
30
20
10
0
0.1
R1172x451x
VIN=5.5VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
80
70
60
50
40
30
20
10
0
0.1
R1172x501x
VIN=6.0VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
11) Line Transient Response (tr=tf=5µs, IOUT=100mA)
R1172x081x
R1172x101x
0.90
COUT=Tantalum 4.7µF
4
1.10
COUT=Ceramic 4.7µF
4
0.88
Input Voltage 3
1.08
3
0.86
2
1.06
Input Voltage
2
0.84
1
1.04
1
0.82
0
1.02
0
Output Voltage
0.80
1.00
0.78
Output Voltage
0.76
0 10 20 30 40 50 60 70 80 90 100
Time t(µs)
0.98
0.96
0 10 20 30 40 50 60 70 80 90 100
Time t(µs)
16