Datasheet
4
LT1585A/LT1585A-3.3
1585afa
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
LT1585A-3.3 Quiescent Current
vs Temperature
TEMPERATURE (°C)
–75
QUIESCENT CURRENT (mA)
9
11
13
125
LT1585A • TPC09
7
5
8
10
12
6
4
3
–25
25
75
–50 150
0
50
100
175
LT1585A-3.3 Ripple Rejection
vs Frequency
FREQUENCY (Hz)
20
RIPPLE REJECTION (dB)
40
50
70
90
10 1k 10k 100k
LT1585A • TPC10
0
100
60
30
10
80
LT1585A-3.3: (V
IN
– V
OUT
) ≤ 3V
0.5V ≤ V
RIPPLE
≤ 2V
I
OUT
= I
FULL LOAD
LT1585A Maximum Power
Dissipation*
CASE TEMPERATURE (˚C)
50
POWER (W)
20
25
30
80 100
LT1585A • TPC11
15
10
60 70
90 110 120 130 140 150
5
0
TEMPERATURE (°C)
–75
REFERENCE VOLTAGE (V)
1.255
1.265
1.275
125
LT1585A • TPC04
1.245
1.235
1.250
1.260
1.270
1.240
1.230
1.225
–25
25
75
–50 150
0
50
100
175
LT1585A Reference Voltage
vs Temperature
LT1585A-3.3 Output Voltage
vs Temperature
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
3.33
3.34
3.35
125
LT1585A • TPC06
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.25
–25
25
75
–50 150
0
50
100
175
V
OUT
= 3.3V
Output Voltage vs Temperature
Using Adjustable LT1585A
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
3.60
3.65
3.70
125
LT1585A • TPC05
3.55
3.50
3.45
3.40
3.35
3.30
3.25
3.20
–25
25
75
–50 150
0
50
100
175
V
OUT
= 3.6V
V
OUT
= 3.45V
V
OUT
= 3.38V
V
OUT
= 3.3V
V
OUT
SET WITH 1% RESISTORS
LT1585A Adjust Pin Current
vs Temperature
TEMPERATURE (°C)
–75
ADJUST PIN CURRENT (µA)
60
80
100
125
LT1585A • TPC08
40
20
50
70
90
30
10
0
–25
25
75
–50 150
0
50
100
175
LT1585A Minimum Load Current
vs Temperature
TEMPERATURE (°C)
–75
MINIMUM LOAD CURRENT (mA)
3
4
5
125
LT1585A • TPC07
2
1
0
–25
25
75
–50 150
0
50
100
175
*AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE