LT1962 Series
Typical perForMance characTerisTics
Current Limit
1.2
1.0
CURRENT LIMIT (A)
0.8
0.6
0.4
0.2
0
–50 –25
REVERSE OUTPUT CURRENT (µA)
V
IN
= 7V
V
OUT
= 0V
100
Reverse Output Current
REVERSE OUTPUT CURRENT (µA)
T
J
= 25°C
90 V
IN
= 0V
CURRENT FLOWS
80 INTO OUTPUT PIN
70 V
OUT
= V
ADJ
(LT1962)
LT1962-1.5
60
LT1962-1.8
50
LT1962-2.5
40
LT1962-3
30
20
10
LT1962-5
0
1
2
3 4 5 6 7 8
OUTPUT VOLTAGE (V)
9
10
LT1962-3.3
LT1962
30
Reverse Output Current
V
IN
= 0V
V
OUT
= 1.22V (LT1962)
25 V
OUT
= 1.5V (LT1962-1.5)
V
OUT
= 1.8V (LT1962-1.8)
V
OUT
= 2.5V (LT1962-2.5)
20 V
OUT
= 3V (LT1962-3)
V
OUT
= 3.3V (LT1962-3.3)
= 5V (LT1962-5)
V
15
OUT
LT1962-1.5/-1.8/-2.5/-3/-3.3/-5
10
5
LT1962
0
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
50
25
75
0
TEMPERATURE (°C)
100
125
0
1962 G40
1962 G41
1962 G42
Input Ripple Rejection
80
70
RIPPLE REJECTION (dB)
60
50
40
30
20
10
0
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
1962 G43
Input Ripple Rejection
80
70
RIPPLE REJECTION (dB)
60
50
40
30
20 I
L
= 300mA
V
IN
= V
OUT(NOMINAL)
+ 1V
10 + 50mV
RMS
RIPPLE
C
OUT
= 10µF
0
10
1k
10k
100
FREQUENCY (Hz)
C
BYP
= 100pF
C
BYP
= 0.01µF
C
BYP
= 1000pF
RIPPLE REJECTION (dB)
68
66
64
62
60
58
56
Ripple Rejection
I
L
= 300mA
V
IN
= V
OUT(NOMINAL)
+ 1V
+ 50mV
RMS
RIPPLE
C
BYP
= 0
C
OUT
= 10µF
C
OUT
= 3.3µF
100k
1M
1962 G44
I
L
= 300mA
54 V
IN
= V
OUT(NOMINAL)
+ 1V
+ 0.5V
P-P
RIPPLE AT f = 120Hz
52
75
0
50
25
–50 –25
TEMPERATURE (°C)
100
125
1962 G45
LT1962 Minimum Input Voltage
2.50
2.25
MINIMUM INPUT VOLTAGE (V)
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
–50
–25
50
25
0
75
TEMPERATURE (°C)
100
125
V
OUT
= 1.22V
LOAD REGULATION (mV)
I
L
= 300mA
I
L
= 1mA
5
0
–5
–10
–15
–20
Load Regulation
OUTPUT NOISE SPECTRIAL DENSITY (µV/√Hz)
LT1962
LT1962-1.8
LT1962-1.5
10
Output Noise Spectral Density
I
L
= 300mA
C
OUT
= 10µF
C
BYP
= 0
LT1962-5
LT1962-3.3
LT1962-3
1
LT1962-3.3
LT1962-3
LT1962-2.5
LT1962-5
LT1962
0.1
LT1962-2.5
LT1962-1.8
LT1962-1.5
–25
–50 –25
V
IN
= V
OUT(NOMINAL)
+ 1V
∆I
L
= 1mA TO 300mA
50
25
75
0
TEMPERATURE (°C)
100
125
0.01
10
100
1962 G46
1962 G47
1k
10k
FREQUENCY (Hz)
100k
1962 G48
1962fb
1962fa
For more information
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