Datasheet

5
LTC3834-1
38341f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
T
A
= 25ºC, unless otherwise noted.
Total Input Supply Current vs
Input Voltage
INTV
CC
Voltages vs Temperature
INTV
CC
Line Regulation
Foldback Current Limit
Quiescent Current vs Temperature
Maximum Current Sense Voltage
vs I
TH
Voltage Cycle
SENSE Pins Total Input Bias
Current
Maximum Current Sense
Threshold vs Duty
INPUT VOLTAGE (V)
5.2
5.4
5.5
30
38341 G12
5.1
15105020
25 35 40
5.0
5.3
INTV
CC
VOLTAGE (V)
I
TH
PIN VOLTAGE (V)
40
6O
100
0.4 0.8
38341 G13
20
0
0 0.2
0.6 1.0 1.2 1.4
–20
–40
80
CURRENT SENSE THRESHOLD (mV)
10% DUTY CYCLE
FORCED CONTINUOUS
Burst Mode OPERATION
(RISING)
Burst Mode OPERATION
(FALLING)
PULSE SKIPPING
V
SENSE
COMMON MODE VOLTAGE (V)
–120
–150
–180
–210
–240
30
0
–30
–60
–90
60
6789
38341 G14
–270
32104
510
–300
INPUT BIAS CURRENT (μA)
DUTY CYCLE (%)
80
120
30 50
38341 G15
60
40
10020
40 60 10070 80 90
20
0
100
MAXIMUM CURRENT SENSE VOLTAGE (mV)
FEEDBACK VOLTAGE (V)
0
80
120
0.3 0.5
38341 G16
60
40
0.1 0.2
0.4 0.6 0.90.7 0.8
20
0
100
MAXIMUM CURRENT SENSE VOLTAGE (mV)
TEMPERATURE (°C)
30
32
36
38
40
45
38341zz G17
28
26
0–15–30–45 15
30 60 75 90
24
22
34
QUIESCENT CURRENT (μA)
INPUT VOLTAGE (V)
200
250
25
38341 G10
100
150
10515
20 30 35
50
0
300
350
SUPPLY CURRENT (μA)
300μA LOAD
NO LOAD
FIGURE 10 CIRCUIT
TEMPERATURE (°C)
4.8
5.0
5.4
5.6
5.8
6.0
55
38341 G11
4.6
4.4
–5–25–45 15
35 75 95
4.2
4.0
5.2
INTV
CC
VOLTAGE (V)
INTV
CC