Datasheet

10
100 1k
10k
100k
FREQUENCY (Hz)
-70
-60
-50
-40
-30
-20
-10
0
PSRR (dB)
0
50
100
150
200
250
300
LOAD CURRENT (mA)
0
50
100
150
200
250
SUPPLY CURRENT (PA)
85°C
25°C
-40°C
0
1
2
3
4
5
INPUT VOLTAGE (V)
0
20
40
60
80
100
240
SUPPLY CURRENT (PA)
6
120
140
160
180
200
220
I
L
= 0mA
T
A
= 85°C
T
A
= 25°C
T
A
= -40°C
0
50
100
150
200
250
300
0
20
40
60
80
100
120
140
160
180
FAULT DETECT THRESHOLD (mV)
LOAD CURRENT (mA)
FAULT = HIGH
FAULT = LOW
0
50
100
150
200
250
300
LOAD CURRENT (mA)
0
20
40
60
80
100
120
140
DROPOUT VOLTAGE (mV)
V
O
= 2.77V
V
O
= 2.5V
V
O
= 3.3V
0
50
100
150
200 250
300
LOAD CURRENT (mA)
0
20
40
60
80
100
120
140
160
DROPOUT VOLTAGE (mV)
85°C
25°C
-40°C
LP3982
SNVS185D –FEBRUARY 2002–REVISED APRIL 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified, V
IN
= V
O
+ 0.5V, C
IN
= C
OUT
= 2.2 μF, C
CC
= 33 nF, T
J
= 25°C, V
SHDN
= V
IN
.
Dropout Voltage vs. Load Current Dropout Voltage vs. Load Current
(For Different Output Voltages) (For Different Output Temperatures)
Figure 2. Figure 3.
FAULT Detect Threshold vs. Load Current Supply Current vs. Input Voltage
Figure 4. Figure 5.
Supply Current vs. Load Current Power Supply Rejection Ratio vs. Frequency
Figure 6. Figure 7.
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