Datasheet

LT1963A Series
5
1963aff
For more information www.linear.com/LT1963A
elecTrical characTerisTics
The l denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage (Notes 4,12) I
LOAD
= 0.5A
I
LOAD
= 1.5A
l
1.9
2.1 2.5
V
V
Regulated Output V
oltage (Note 5) LT1963A-1.5 V
IN
= 2.21V, I
LOAD
= 1mA
2.5V < V
IN
< 20V, 1mA < I
LOAD
< 1.5A
l
1.477
1.447
1.500
1.500
1.523
1.545
V
V
LT1963A-1.8
V
IN
= 2.3V, I
LOAD
= 1mA
2.8V < V
IN
< 20V, 1mA < I
LOAD
< 1.5A
l
1.773
1.737
1.800
1.800
1.827
1.854
V
V
LT1963A-2.5
V
IN
= 3V, I
LOAD
= 1mA
3.5V < V
IN
< 20V, 1mA < I
LOAD
< 1.5A
l
2.462
2.412
2.500
2.500
2.538
2.575
V
V
LT1963A-3.3
V
IN
= 3.8V, I
LOAD
= 1mA
4.3V < V
IN
< 20V, 1mA < I
LOAD
< 1.5A
l
3.250
3.200
3.300
3.300
3.350
3.400
V
V
ADJ Pin V
oltage (Notes 4, 5) LT1963A V
IN
= 2.21V, I
LOAD
= 1mA
2.5V < V
IN
< 20V, 1mA < I
LOAD
< 1.5A
l
1.192
1.174
1.210
1.210
1.228
1.246
V
V
Line Regulation LT1963A
-1.5 ∆V
IN
= 2.21V to 20V, I
LOAD
= 1mA
LT1963A-1.8
∆V
IN
= 2.3V to 20V, I
LOAD
= 1mA
LT1963A-2.5
∆V
IN
= 3V to 20V, I
LOAD
= 1mA
LT1963A-3.3
∆V
IN
= 3.8V to 20V, I
LOAD
= 1mA
LT1963A (Note 4)
∆V
IN
= 2.21V to 20V, I
LOAD
= 1mA
l
l
l
l
l
2.0
2.5
3.0
3.5
1.5
6
7
10
10
5
mV
mV
mV
mV
mV
Load Regulation LT1963A-1.5
V
IN
= 2.5V, ∆I
LOAD
= 1mA to 1.5A
V
IN
= 2.5V, ∆I
LOAD
= 1mA to 1.5A
●
2 9
18
mV
mV
LT1963A-1.8
V
IN
= 2.8V, ∆I
LOAD
= 1mA to 1.5A
V
IN
= 2.8V, ∆I
LOAD
= 1mA to 1.5A
●
2 10
20
mV
mV
LT1963A-2.5
V
IN
= 3.5V, ∆I
LOAD
= 1mA to 1.5A
V
IN
= 3.5V, ∆I
LOAD
= 1mA to 1.5A
●
2.5 15
30
mV
mV
LT1963A-3.3
V
IN
= 4.3V, ∆I
LOAD
= 1mA to 1.5A
V
IN
= 4.3V, ∆I
LOAD
= 1mA to 1.5A
●
3 20
35
mV
mV
LT1963A (Note 4)
V
IN
= 2.5V, ∆I
LOAD
= 1mA to 1.5A
V
IN
= 2.5V, ∆I
LOAD
= 1mA to 1.5A
●
2 8
15
mV
mV
Dropout V
oltage
V
IN
= V
OUT(NOMINAL)
(Notes 6, 7, 12)
I
LOAD
= 1mA
I
LOAD
= 1mA
●
0.02 0.06
0.10
V
V
I
LOAD
= 100mA
I
LOAD
= 100mA
●
0.10 0.17
0.22
V
V
I
LOAD
= 500mA
I
LOAD
= 500mA
●
0.19 0.27
0.35
V
V
I
LOAD
= 1.5A
I
LOAD
= 1.5A
●
0.34 0.45
0.55
V
V
GND Pin Current
V
IN
= V
OUT(NOMINAL)
+ 1V
(Notes 6, 8)
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 1.5A
●
●
●
●
●
1.0
1.1
3.8
15
80
1.5
1.6
5.5
25
120
mA
mA
mA
mA
mA
Output V
oltage Noise C
OUT
= 10µF, I
LOAD
= 1.5A, BW = 10Hz to 100kHz 40 µV
RMS
ADJ Pin Bias Current (Notes 4, 9) 3 10 µA
Shutdown Threshold V
OUT
= Off to On
V
OUT
= On to Off
●
●
0.25
0.90
0.75
2 V
V
SHDN Pin Current (Note 10) V
SHDN
= 0V
V
SHDN
= 20V
0.01
3
1
30
µA
µA
Quiescent Current in Shutdown V
IN
= 6V, V
SHDN
= 0V 0.01 1 µA