LT1963A Series
ELECTRICAL CHARACTERISTICS
The ■ denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25∞C. (Note 2)
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
■
■
■
■
■
■
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
1.477
1.447
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
1.773
1.737
1.800
1.800
1.827
1.854
V
V
IN
2.8V < V < 20V, 1mA < I
IN
V
= 3V, I
= 1mA
2.462
2.412
2.500
2.500
2.538
2.575
V
V
IN
LOAD
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)
V
= 2.21V, I
= 1mA
1.192
1.174
1.210
1.210
1.228
1.246
V
V
IN
LOAD
2.5V < V < 20V, 1mA < I
IN
Line Regulation
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3
DV = 2.21V to 20V, I
= 1mA
■
■
■
■
■
2.0
2.5
3.0
3.5
1.5
6
7
10
10
5
mV
mV
mV
mV
mV
IN
LOAD
DV = 2.3V to 20V, I
= 1mA
IN
IN
LOAD
LOAD
LOAD
DV = 3V to 20V, I
= 1mA
= 1mA
= 1mA
DV = 3.8V to 20V, I
IN
LT1963A (Note 4) DV = 2.21V to 20V, I
IN
LOAD
Load Regulation
LT1963A-1.5
LT1963A-1.8
LT1963A-2.5
LT1963A-3.3
LT1963A (Note 4)
V
V
= 2.5V, DI
= 2.5V, DI
= 1mA to 1.5A
= 1mA to 1.5A
2
9
mV
mV
IN
IN
LOAD
LOAD
■
■
■
■
■
■
■
■
■
18
V
V
= 2.8V, DI
= 2.8V, DI
= 1mA to 1.5A
= 1mA to 1.5A
2
10
20
mV
mV
IN
IN
LOAD
LOAD
V
V
= 3.5V, DI
= 3.5V, DI
= 1mA to 1.5A
= 1mA to 1.5A
2.5
3
15
30
mV
mV
IN
IN
LOAD
LOAD
V
V
= 4.3V, DI
= 4.3V, DI
= 1mA to 1.5A
= 1mA to 1.5A
20
35
mV
mV
IN
IN
LOAD
LOAD
V
V
= 2.5V, DI
= 2.5V, DI
= 1mA to 1.5A
= 1mA to 1.5A
2
8
15
mV
mV
IN
IN
LOAD
LOAD
Dropout Voltage
I
I
= 1mA
= 1mA
0.02
0.10
0.19
0.34
0.06
0.10
V
V
LOAD
LOAD
V
= V
IN
OUT(NOMINAL)
(Notes 6, 7, 12)
I
I
= 100mA
= 100mA
0.17
0.22
V
V
LOAD
LOAD
I
I
= 500mA
= 500mA
0.27
0.35
V
V
LOAD
LOAD
I
I
= 1.5A
= 1.5A
0.45
0.55
V
V
LOAD
LOAD
GND Pin Current
IN
(Notes 6, 8)
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
OUT(NOMINAL)
= 1mA
= 100mA
= 500mA
= 1.5A
80
120
Output Voltage Noise
ADJ Pin Bias Current
Shutdown Threshold
C
= 10mF, I
= 1.5A, BW = 10Hz to 100kHz
40
3
mV
RMS
OUT
LOAD
(Notes 4, 9)
10
2
mA
V
V
V
V
= Off to On
= On to Off
■
■
0.90
0.75
OUT
OUT
0.25
SHDN Pin Current
(Note 10)
V
V
= 0V
= 20V
0.01
3
1
30
mA
mA
SHDN
SHDN
Quiescent Current in Shutdown
Ripple Rejection
V
= 6V, V
= 0V
SHDN
0.01
63
1
mA
dB
IN
V
– V
= 1.5V (Avg), V
= 0.5V ,
P-P
55
IN
OUT
= 120Hz, I
RIPPLE
f
= 0.75A
RIPPLE
LOAD
Current Limit
V
V
= 7V, V
= 0V
2
A
A
IN
IN
OUT
= V
+ 1V, DV
= –0.1V
■
1.6
OUT(NOMINAL)
OUT
1963af
3
Linear [ Linear ]
