Datasheet

LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
5
1767fb
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Typical perForMance characTerisTics
LOAD CURRENT (mA)
1
10
100
1k
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
INPUT VOLTAGE (V)
Minimum Input Voltage, 3.3V Out
1767 G07
BOOST DIODE TIED TO V
OUT
BOOST DIODE TIED TO V
IN
TO START
TO RUN
SHUTDOWN VOLTAGE (V)
0
0.2 0.4 0.6 0.8 1 1.2 1.4
V
IN
CURRENT (µA)
1767 G08
300
250
200
150
100
50
0
V
IN
= 15V
INPUT VOLTAGE (V)
0 5 10 15 20 25 30
V
IN
CURRENT (µA)
1767 G09
1200
1000
800
600
400
200
0
MINIMUM
INPUT
VOLTAGE
Minimum Input Voltage, 3.3V Out SHDN Supply Current Input Supply Current
FEEDBACK VOLTAGE (V)
0 0.2
0.4 0.6 0.8 1 1.2
SWITCH PEAK CURRENT (A)
1767 G10
2.0
1.5
1.0
0.5
0
FB INPUT CURRENT (µA)
40
30
20
10
0
FB CURRENT
SWITCH CURRENT
1767 G11
INPUT VOLTAGE (V)
0 5 10 15 20 25
OUTPUT CURRENT (A)
1.5
1.3
1.1
0.9
0.7
0.5
L = 4.7µH
L = 2.2µH
L = 1.5µH
INPUT VOLTAGE (V)
0 5
10 15 20 25
OUTPUT CURRENT (A)
1767 G12
1.5
1.3
1.1
0.9
0.7
L = 4.7µH
L = 2.2µH
L = 1.5µH
Current Limit Foldback
Maximum Load Current,
V
OUT
= 5V
Maximum Load Current,
V
OUT
= 2.5V
T
A
= 25°C, unless otherwise noted.
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