Datasheet

4
LT1118/LT1118-2.5
LT1118-2.85/LT1118-5
1118fc
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Output Impedance vs Frequency Ripple Rejection vs Load CurrentFeedback Current vs Temperature
FREQUENCY (Hz)
10
2
0.001
Z
OUT
(mA)
0.1
10
10
4
10
5
10
3
10
6
1118 G04
0.01
1
NO CURRENT
10mA SOURCE
100mA SOURCE
10mA SINK
100mA SINK
OUTPUT SINK CURRENT (mA)
0
INPUT CURRENT (µA)
1000
1250
1500
400
1118 G07
750
500
0
100
200
300
250
2000
1750
50
150
250
350
OUTPUT SOURCING CURRENT (mA)
0
GROUND PIN CURRENT (µA)
400
500
600
800
1118 G08
300
200
0
200
400
600
100
800
700
TEMP
–55 –35 –15 5 25 45 65 85 105 125
CURRENT (nA)
450
400
350
300
250
200
150
100
50
0
1118 G05
LOAD CURRENT (mA)
–400
RIPPLE REJECTION (dB)
80
60
40
20
0
–200 0 200 400
1118 G06
600 800
C
IN
= C
LOAD
= 1µF
Input Current vs
Output Sink Current
Ground Pin Current vs
Output Source Current
Dropout Voltage vs Output Current
Ripple Rejection vs FrequencyRipple Rejection vs Frequency
OUTPUT CURRENT (mA)
0 200 400 600 800
DROPOUT VOLTAGE
1118 G01
1.4
1.2
1
0.8
0.6
0.4
0.2
0
T
J
= 75°C
T
J
= 25°C
T
J
= 125°C
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
60
40
20
0
10 1k 10k 100k
1118 G02
100
SOURCING CURRENT
NO LOAD
800mA
10mA
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
60
40
20
0
10 1k 10k 100k
1118 G03
100
SINKING CURRENT
NO LOAD
400mA
10mA