Datasheet

3
LT1587-1.5
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Short-Circuit Current
vs Temperature
OUTPUT CURRENT (A)
0
0.5
DROPOUT VOLTAGE (V)
0.7
0.8
0.9
1.0
1.1
1.2
0.5
1.0
1.5 2.0
LT1587 • TPC01
2.5
1.3
1.4
1.5
0.6
3.0
T = –5°C
T = 125°C
T = 25°C
GUARANTEED
TEST POINTS
TEMPERATURE (°C)
–75
SHORT-CIRCUIT CURRENT (A)
4.0
4.5
125
LT1587 • TPC02
3.5
3.0
–25
25
50
175
5.0
75
–50
0
150
100
TEMPERATURE (°C)
–0.20
OUTPUT VOLTAGE DEVIATION (%)
–0.10
0
0.10
–0.15
–0.05
0.05
–25 25 75 125
LT1587 • TPC03
175–50–75 0 50 100 150
∆I = 3A
Dropout Voltage vs Output Current
Load Regulation vs Temperature
Output Voltage vs Temperature
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
1.53
1.52
1.51
1.50
1.49
1.48
1.47
–25 25 75 125
LT1587 • TPC04
175–50–75 0 50 100 150
Ripple Rejection vs Frequency
FREQUENCY (Hz)
20
RIPPLE REJECTION (dB)
40
50
70
90
10 1k 10k 100k
LT1587 • TPC06
0
100
60
30
10
80

LT1587-1.5: (V
IN
– V
OUT
) ≤ 3V
0.5V ≤ V
RIPPLE
≤ 2V
I
OUT
= I
FULL LOAD
Quiescent Current vs Temperature
TEMPERATURE (°C)
–75
QUIESCENT CURRENT (mA)
9
11
13
125
LT1587 • TPC05
7
5
8
10
12
6
4
3
–25
25
75
–50 150
0
50
100
175
Maximum Power Dissipation*
CASE TEMPERATURE (˚C)
50
POWER (W)
20
25
30
80 100
LT1587 • TPC07
15
10
60 70
90 110 120 130 140 150
5
0
LT1587-1.5
*AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE