LT1963A Series
The l denotes specifications which apply over the full operating
elecTrical characTerisTics
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage (Notes 4,12)
I
I
= 0.5A
= 1.5A
1.9
2.1
V
V
LOAD
LOAD
l
l
l
l
l
l
2.5
Regulated Output Voltage (Note 5)
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3
LT1963A
V
= 2.21V, I
= 1mA
1.4±±
1.44±
1.500
1.500
1.523
1.545
V
V
IN
LOAD
2.5V < V < 20V, 1mA < I
< 1.5A
< 1.5A
< 1.5A
< 1.5A
< 1.5A
IN
LOAD
LOAD
LOAD
LOAD
LOAD
V
= 2.3V, I
= 1mA
LOAD
1.±±3
1.±3±
1.800
1.800
1.82±
1.854
V
V
IN
2.8V < V < 20V, 1mA < I
IN
V
= 3V, I
= 1mA
LOAD
2.462
2.412
2.500
2.500
2.538
2.5±5
V
V
IN
3.5V < V < 20V, 1mA < I
IN
V
= 3.8V, I
= 1mA
LOAD
3.250
3.200
3.300
3.300
3.350
3.400
V
V
IN
4.3V < V < 20V, 1mA < I
IN
ADJ Pin Voltage (Notes 4, 5)
Line Regulation
V
IN
= 2.21V, I
= 1mA
1.192
1.1±4
1.210
1.210
1.228
1.246
V
V
LOAD
2.5V < V < 20V, 1mA < I
IN
l
l
l
l
l
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3
∆V = 2.21V to 20V, I
= 1mA
2.0
2.5
3.0
3.5
1.5
6
±
10
10
5
mV
mV
mV
mV
mV
IN
LOAD
∆V = 2.3V to 20V, I
= 1mA
IN
LOAD
LOAD
∆V = 3V to 20V, I
= 1mA
IN
∆V = 3.8V to 20V, I
= 1mA
= 1mA
IN
LOAD
LOAD
LT1963A (Note 4) ∆V = 2.21V to 20V, I
IN
Load Regulation
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3
LT1963A (Note 4)
V
V
= 2.5V, ∆I
= 2.5V, ∆I
= 1mA to 1.5A
= 1mA to 1.5A
2
9
mV
mV
IN
IN
LOAD
LOAD
●
●
●
●
●
●
●
●
●
18
V
V
= 2.8V, ∆I
= 2.8V, ∆I
= 1mA to 1.5A
= 1mA to 1.5A
2
10
20
mV
mV
IN
IN
LOAD
LOAD
V
V
= 3.5V, ∆I
= 3.5V, ∆I
= 1mA to 1.5A
= 1mA to 1.5A
2.5
3
15
30
mV
mV
IN
IN
LOAD
LOAD
V
V
= 4.3V, ∆I
= 4.3V, ∆I
= 1mA to 1.5A
= 1mA to 1.5A
20
35
mV
mV
IN
IN
LOAD
LOAD
V
V
= 2.5V, ∆I
= 2.5V, ∆I
= 1mA to 1.5A
= 1mA to 1.5A
2
8
15
mV
mV
IN
IN
LOAD
LOAD
Dropout Voltage
= V
I
I
= 1mA
= 1mA
0.02
0.10
0.19
0.34
0.06
0.10
V
V
LOAD
LOAD
V
IN
OUT(NOMINAL)
(Notes 6, ±, 12)
I
I
= 100mA
= 100mA
0.1±
0.22
V
V
LOAD
LOAD
I
I
= 500mA
= 500mA
0.2±
0.35
V
V
LOAD
LOAD
I
I
= 1.5A
= 1.5A
0.45
0.55
V
V
LOAD
LOAD
GND Pin Current
I
I
I
I
I
= 0mA
●
●
●
●
●
1.0
1.1
3.8
15
1.5
1.6
5.5
25
mA
mA
mA
mA
mA
LOAD
LOAD
LOAD
LOAD
LOAD
V
= V
+ 1V
= 1mA
IN
OUT(NOMINAL)
(Notes 6, 8)
= 100mA
= 500mA
= 1.5A
80
120
Output Voltage Noise
ADJ Pin Bias Current
Shutdown Threshold
C
= 10µF, I
= 1.5A, BW = 10Hz to 100kHz
40
3
µV
RMS
OUT
LOAD
(Notes 4, 9)
10
2
µA
V
OUT
V
OUT
= Off to On
= On to Off
●
●
0.90
0.±5
V
V
0.25
SHDN Pin Current (Note 10)
V
SHDN
V
SHDN
= 0V
= 20V
0.01
3
1
30
µA
µA
Quiescent Current in Shutdown
V
IN
= 6V, V
= 0V
SHDN
0.01
1
µA
1963aff
5
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