LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
TYPICAL PERFOR A CE CHARACTERISTICS
LT1117 Ripple Rejection
100
90
80
V
RIPPLE
≤
3V
P-P
V
RIPPLE
≤
0.5V
P-P
RIPPLE REJECTION (dB)
RIPPLE REJECTION (dB)
70
60
50
40
30
20
10
0
10
100
1k
(V
IN
– V
OUT)
≥
3V
80
70
60
50
40
30
20
10
0
V
OUT
= 5V
C
ADJ
= 25µF
C
OUT
= 25µF
0
0.2
0.4
f
RIPPLE
= 120Hz
V
RIPPLE
≤
3V
P-P
f
RIPPLE
= 20kHz
V
RIPPLE
≤
0.5V
P-P
OUTPUT VOLTAGE CHANGE (%)
(V
IN
– V
OUT)
≥
V
DROPOUT
C
ADJ
= 200µF AT f < 60Hz
C
ADJ
= 25µF AT f > 60Hz
I
OUT
= 0.5A
10k
100k
FREQUENCY (Hz)
LT1117 • TPC05
Adjust Pin Current
100
OUPUT VOLTAGE
DEVIATION (V)
90
0.2
0.1
0
– 0.1
– 0.2
C
IN
= 10µF
C
OUT
= 10µF TANTALUM
V
IN
= 4.25V
PRELOAD = 0.1A
OUPUT VOLTAGE
DEVIATION (V)
AJUST PIN CURRENT (µA)
80
70
60
50
40
LOAD CURRENT
(A)
20
10
0
–50 –25
0
25
50
75
100 125 150
LT1117 • TPC08
0.5
0
– 0.5
0
10 20 30 40 50
60 70 80 90 100
LT1117 • TPC09
LOAD CURRENT
(A)
30
TEMPERATURE (°C)
LT1117-2.8
Line Transient Response
60
OUPUT VOLTAGE
DEVIATION (mV)
40
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)
LT1117 • TPC11
OUPUT VOLTAGE
DEVIATION (mV)
C
IN
= 1µF
C
OUT
= 10µF TANTALUM
I
OUT
= 0.1A
INPUT VOLTAGE
(V)
4
U W
LT1117 Ripple Rejection vs Current
100
90
Temperature Stability
2.0
1.0
0
–1.0
0.6
0.8
–2.0
–50 –25
0
25
50
75
100 125 150
LT1117 • TPC07
OUTPUT CURRENT (A)
LT1117 • TPC06
TEMPERATURE (°C)
LT1117-2.85
Load Transient Response
0.3
0.3
0.2
0.1
0
– 0.1
– 0.2
0.5
0
– 0.5
LT1117-5
Load Transient Response
C
IN
= 10µF
C
OUT
= 10µF TANTALUM
V
IN
= 6.5V
PRELOAD = 0.1A
0
10 20 30 40 50
60 70 80 90 100
LT1117 • TPC10
TIME (µs)
TIME (µs)
LT1117-5
Line Transient Response
60
40
20
0
–20
–40
7.50
6.50
5.50
0
20 40 60 80 100 120 140 160 180 200
TIME (µs)
LT1117 • TPC12
C
IN
= 1µF
C
OUT
= 10µF TANTALUM
I
OUT
= 0.1A
LINER [ LINEAR TECHNOLOGY ]
