Datasheet

LTC3854
5
3854fb
Switching Waveforms at No Load
Switching Waveforms at High
Duty Cycle, No Load
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current vs V
IN
Quiescent Current vs Temperature INTV
CC
vs Input Voltage
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
Maximum Current Sense Threshold
vs Duty Cycle
Maximum Current Sense Voltage
vs Feedback Voltage
(Current Foldback)
BG
V
OUT
= 5V
I
L
TG
1µs/DIV
3854 G06
BG
V
OUT
= 2.5V
I
L
TG
2µs/DIV
3854 G07
V
IN
(V)
6
QUIESCENT CURRENT (mA)
1.17
1.13
1.11
1.14
1.15
1.16
1.12
1.10
1.09
2616 36
3854 G08
2111 31
TEMPERATURE (°C)
–45
QUIESCENT CURRENT (mA)
1.30
1.10
1.00
1.15
1.20
1.25
1.05
0.95
0.90
35–5 75
3854 G09
9515–25 55
V
IN
(V)
4
INTV
CC
(V)
5.05
5.00
4.90
4.95
4.85
4.80
2414 34
3854 G10
39199 29
COMMON MODE VOLTAGE (V)
0
V
SENSE(MAX)
(mV)
60
56
48
50
52
54
58
42
44
46
40
42 6
3854 G11
731 5
DUTY CYCLE (%)
0
V
SENSE(MAX)
(mV)
65
55
50
60
40
45
35
8040
3854 G12
1206020 100
FB (V)
0.050
MAXIMUM CURRENT SENSE VOLTAGE (mV)
60
40
30
50
10
20
0
0.450.25
3854 G13
0.750.350.15 0.55 0.65