TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203D – JUNE 1999 – REVISED APRIL 2000
TYPICAL CHARACTERISTICS
TPS76933
OUTPUT IMPEDANCE
vs
FREQUENCY
2
1.8
1.6
Zo – Output Impedance –
Ω
1.4
1.2
1
0.8
0.6
0.4
0.2
0
10
100
IO = 100 mA
IO = 1 mA
VI = 4.3 V
CO = 4.7
µF
ESR = 0.3
Ω
TA = 25° C
1000
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
VI = 3.2 V
CO = 4.7
µF
VDO – Dropout Voltage – mV
100
IO = 100 mA
10
IO = 10 mA
1k
10 k
100 k
1M
1
–60 –40 –20
0
20
40
60
80 100 120 140
f – Frequency – Hz
TA – Free-Air Temperature –
°C
Figure 9
TPS76933
Figure 10
100
90
80
Ripple Rejection – dB
70
60
50
40
30
20
10
0
– 10
10
RIPPLE REJECTION
vs
FREQUENCY
LDO STARTUP TIME
EN
IO = 1 mA
IO = 100 mA
VI = 4.3 V
CO = 4.7
µF
ESR = 0.3
Ω
100
1k
10 k
100 k
1M
10 M
VO
0
20
40
60
f – Frequency – Hz
80 100 120 140 160 180 200
t – Time –
µs
Figure 11
Figure 12
8
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