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