LT1528 Linear Technology, LT1528 Datasheet - Page 5

• Manufacturer Part Number: LT1528
• Description: 3A Low Dropout Regulator for Microprocessor Applications
• Manufacturer: Linear Technology

TYPICAL PERFORMANCE CHARACTERISTICS
200
175
150
125
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
75
50
25
0
0
6
5
4
3
2
1
0
–50
–50
–50
Shutdown Pin Threshold
(Off-to-On)
Sense Pin Current
Current Limit
CURRENT FLOWS INTO SENSE PIN
V
V
–25
–25
–25
IN
OUT
= 7V
= 0V
0
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
25
50
50
50
I
LOAD
I
LOAD
75
75
75
= 3A
= 1mA
W
LT1528 • TPC10
LT1528 • TPC13
LT1528 • TPC16
100
100
100
U
125
125
125
1000
100
300
250
200
150
100
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
50
0
0
0
–50
–50
Shutdown Pin Current
Reverse Output Current
Reverse Output Current
0
V
V
T
V
CURRENT FLOWS
INTO DEVICE
V
IN
OUT
J
1
–25
OUT
SHDN
–25
= 25 C, V
= 0V
= V
=V
2
= 0V
SENSE
SENSE
0
OUTPUT VOLTAGE (V)
0
TEMPERATURE ( C)
TEMPERATURE ( C)
3
IN
= 0V
4
25
25
5
50
50
6
75
75
7
8
LT1528 • TPC11
LT1528 • TPC14
LT1528 • TPC17
100
100
9
125
125
10
20
10
70
68
66
64
62
60
58
56
25
15
6
5
4
3
2
1
0
0
5
–50
Current Limit
0
Shutdown Pin Input Current
Ripple Rejection
0
V
V
V
I
L
OUT
IN(AVG)
RIPPLE
–25
1
= 1.5A
1
= 0V
SHUTDOWN PIN VOLTAGE (V)
2
= 0.5V
= 4.3V
2
0
INPUT VOLTAGE (V)
TEMPERATURE ( C)
3
P-P
25
3
4
AT f = 120Hz
50
5
4
LT1528
6
75
5
7
LT1528 • TPC18
LT1528 • TPC12
LT1528 • TPC15
100
6
8
5
125
9
7