LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
TYPICAL PERFORMANCE CHARACTERISTICS
LT1117 Ripple Rejection
100
90
80
RIPPLE REJECTION (dB)
70
60
50
40
30
20
10
0
C
ADJ
= 200μF AT f < 60Hz
C
ADJ
= 25μF AT f > 60Hz
I
OUT
= 0.5A
10
100
1k
10k
FREQUENCY (Hz)
100k
1117 G04
LT1117 Ripple Rejection
vs Current
100
V
RIPPLE
≤
0.5V
P-P
RIPPLE REJECTION (dB)
90
80
V
OUT
= 5V
C
ADJ
= 25μF
C
OUT
= 25μF
2.0
OUTPUT VOLTAGE CHANGE (%)
Temperature Stability
V
RIPPLE
≤ 3V
P-P
f
RIPPLE
= 120Hz
V
RIPPLE
≤ 3V
P-P
f
RIPPLE
= 20kHz
V
RIPPLE
≤ 0.5V
P-P
(V
IN
– V
OUT)
≥ 3V
1.0
70
60
50
40
30
20
10
0
0
0
(V
IN
– V
OUT)
≥ V
DROPOUT
–1.0
0.2
0.4
0.6
OUTPUT CURRENT (A)
0.8
1117 G05
–2.0
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
1117 G06
Adjust Pin Current
100
OUTPUT VOLTAGE
DEVIATION (V)
90
ADJUST PIN CURRENT (μA)
80
70
60
50
40
LOAD CURRENT
(A)
30
20
10
0
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
1117 G07
LT1117-2.85
Load Transient Response
0.3
0.2
0.1
0
–0.1
–0.2
0.5
0
–0.5
0
10 20 30 40 50 60 70 80 90 100
TIME (μs)
1117 G08
LT1117-5
Load Transient Response
0.3
OUTPUT VOLTAGE
DEVIATION (V)
LOAD CURRENT
(A)
C
IN
= 10μF
0.2 C
OUT
= 10μF TANTALUM
V
IN
= 6.5V
PRELOAD = 0.1A
0.1
0
–0.1
–0.2
0.5
0
–0.5
0
10 20 30 40 50 60 70 80 90 100
TIME (μs)
1117 G09
C
IN
= 10μF
C
OUT
= 10μF TANTALUM
V
IN
= 4.25V
PRELOAD = 0.1A
LT1117-2.85
Line Transient Response
60
OUTPUT VOLTAGE
DEVIATION (mV)
OUTPUT VOLTAGE
DEVIATION (mV)
C
IN
= 1μF
40 C
OUT
= 10μF TANTALUM
I
OUT
= 0.1A
20
0
–20
–40
INPUT VOLTAGE
(V)
5.25
4.25
3.25
0
20 40 60 80 100 120 140 160 180 200
TIME (μs)
1117 G10
LT1117-5
Line Transient Response
60
40
20
0
–20
–40
INPUT VOLTAGE
(V)
7.50
6.50
5.50
0
20 40 60 80 100 120 140 160 180 200
TIME (μs)
1117 G11
C
IN
= 1μF
C
OUT
= 10μF TANTALUM
I
OUT
= 0.1A
1117fd
5
LINER [ LINEAR TECHNOLOGY ]
