LT1765/LT1765-1.8/LT1765-2.5/
LT1765-3.3/LT1765-5
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Input Voltage for
2.5V Out
3.5
300
V
IN
= 15V
3.3
INPUT VOLTAGE (V)
V
IN
CURRENT (μA)
0.1
0.01
LOAD CURRENT (A)
1
1765 G07
SHDN
Supply Current
250
200
150
100
50
0
3.1
2.9
2.7
2.5
0.001
0
0.2
0.4 0.6 0.8
1
1.2
SHUTDOWN VOLTAGE (V)
1.4
1765 G08
Input Supply Current
1200
1000
V
IN
CURRENT (μA)
800
600
400
200
0
0
5
10
15
20
INPUT VOLTAGE (V)
25
30
1765 G09
Current Limit Foldback
4
40
SWITCH PEAK CURRENT (A)
FB INPUT CURRENT (μA)
UNDERVOLTAGE
LOCKOUT
3
SWITCH CURRENT
2
30
20
1
FB CURRENT
0
10
0
0.2
0.4
0.6
0.8
FEEDBACK VOLTAGE (V)
1
0
1.2
1765 G10
Maximum Load Current,
V
OUT
= 5V
3.0
3.0
Maximum Load Current,
V
OUT
= 2.5V
2.8
OUTPUT CURRENT (A)
L = 4.7μH
OUTPUT CURRENT (A)
L = 4.7μH
2.8
2.6
L = 2.2μH
2.6
L = 1.5μH
2.4
2.4
L = 2.2μH
2.2
L = 1.5μH
2.0
0
5
10
15
INPUT VOLTAGE (V)
20
25
1765 G11
2.2
0
5
10
15
INPUT VOLTAGE (V)
20
25
1765 G12
1765fd
5
LINER [ LINEAR TECHNOLOGY ]
