300mA CMOS LDO With Shutdown,
ERROR Output, And Bypass
TC1173
TYPICAL CHARACTERISTICS
Load Regulation
Line Regulation
Output Noise
2.00
1.80
0.012
0.010
10.0
1.0
R
C
= 50Ω
= 1µF
LOAD
OUT
1.60
1.40
1.20
1 to 300mA
1 to 100mA
0.008
0.006
1.00
0.80
0.60
0.40
0.004
0.002
0.000
0.1
0.0
1 to 50mA
–0.002
0.20
0.00
–0.004
0.01
10
–40 –20
0
20 40 60 80 100 120
–40 –20
0.01
1
100
1000
0
20 40 60 80 100 120
FREQUENCY (KHz)
TEMPERATURE (°C)
TEMPERATURE (°C)
Supply Current
Dropout Voltage vs. Load Current
V
vs. Temperature
OUT
100.0
90.0
80.0
3.075
3.025
0.40
0.35
125°C
85°C
V
= 4V
= 100µA
IN
I
LOAD
C
= 3.3µF
LOAD
0.30
0.25
0.20
0.15
0.10
0.05
0.00
70°C
25°C
70.0
60.0
50.0
40.0
0°C
2.975
–40°C
2.925
–40 –20
0
–40 –20
0
20 40 60 80 100 120
50
0
20 40 60 80 100 120
TEMPERATURE (°C)
150 200 250 300
100
TEMPERATURE (°C)
LOAD CURRENT (mA)
Power Supply Rejection Ratio
= 5V
–30dB
–35dB
–40dB
V
R
V
OUT
= 50Ω
= 50mV p-p
LOAD
INAC
–45dB
–50dB
–55dB
–60dB
–65dB
–70dB
–75dB
C
= 1µF
OUT
–80dB
1K
100K
1M
10
100
10K
FREQUENCY (KHz)
5
TC1173-2 2/2/00
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
