Datasheet
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LT1763 Series
10
1763fh
Typical perForMance characTerisTics
SHDN Pin Input Current
ADJ Pin Bias Current
Current Limit
TEMPERATURE (°C)
–50
SHDN PIN INPUT CURRENT (µA)
100
1763 G37
0 50
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–25 25 75 125
V
SHDN
= 20V
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (nA)
0
50
75
1763 G38
–25
25
100
125
140
120
100
80
60
40
20
0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
INPUT VOLTAGE (V)
0
CURRENT LIMIT (A)
2
4
5
1763 G39
1
3
6
7
V
OUT
= 0V
Current Limit
Reverse Output Current
Reverse Output Current
Input Ripple Rejection Input Ripple Rejection Ripple Rejection
TEMPERATURE (°C)
–50
CURRENT LIMIT (A)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
1763 G40
–25
25
100
125
V
IN
= 7
V
OUT
= 0V
OUTPUT VOLTAGE (V)
100
90
80
70
60
50
40
30
20
10
0
REVERSE OUTPUT CURRENT (µA)
1763 G41
0 1 2 3
4
5
6 7 8 9 10
T
J
= 25°C, V
IN
= 0V
CURRENT FLOWS
INTO OUTPUT PIN
V
OUT
= V
ADJ
(LT1763)
LT1763
LT1763-5
LT1763-1.5
LT1763-3.3
LT1763-3
LT1763-2.5
LT1763-1.8
20
18
16
14
12
10
8
6
4
2
0
REVERSE OUTPUT CURRENT (µA)
1763 G42
V
IN
= 0V, V
OUT
= 1.22V (LT1763)
V
OUT
= 1.5V (LT1763-1.5)
V
OUT
= 1.8V (LT1763-1.8)
V
OUT
= 2.5V (LT1763-2.5)
V
OUT
= 3V (LT1763-3)
V
OUT
= 3.3V (LT1763-3.3)
V
OUT
= 5V (LT1763-5)
LT1763-1.5/-1.8/
-2.5/-3/-3.3/-5
LT1763
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
125
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10 1k 10k 1M
1763 G43
100 100k
I
L
= 500mA
V
IN
= V
OUT(NOMINAL)
+
1V + 50mV
RMS
RIPPLE
C
BYP
= 0
C
OUT
= 4.7µF
C
OUT
= 10µF
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10 1k 10k 1M
1763 G44
100 100k
I
L
= 500mA
V
IN
= V
OUT(NOMINAL)
+
1V + 50mV
RMS
RIPPLE
C
OUT
= 10µF
C
BYP
= 0.01µF
C
BYP
= 100pF
C
BYP
= 1000pF
TEMPERATURE (°C)
–50
RIPPLE REJECTION (dB)
100
1763 G45
0 50
68
66
64
62
60
58
56
54
52
–25 25 75 125
V
IN
= V
OUT (NOMINAL)
+
1V + 0.5V
P-P
RIPPLE
AT f = 120Hz
I
L
= 500mA
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