Datasheet

LTC3538
5
3538fb
Current Limit vs Temperature
Load Transient in Fixed
Frequency Mode
Burst Mode Operation
Transition From Burst Mode
Operation to Fixed Frequency
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise noted
V
C
On/Off Threshold vs
Temperature
TEMPERATURE (°C)
–50
0.40
V
C
ON/OFF THRESHOLD (V)
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
050
3538 G10
100
V
C
ON THRESHOLD
V
C
OFF THRESHOLD
TEMPERATURE (°C)
–50
1.5
CURRENT LIMIT (A)
2.0
2.5
3.0
4.0
3.5
–25 0 25 50
3538 G12
75 100
LINEAR CURRENT LIMIT
PEAK CURRENT LIMIT
V
IN
= V
OUT
= 3.6V
100μs/DIV
V
OUT
100mV/DIV
I
LOAD
200mA/DIV
3538 G13
V
IN
= 3.3V
V
OUT
= 3.3V
I
LOAD
= 0mA TO 500mA
C
OUT
= 22μF X5R CERAMIC
10μs/DIV
V
OUT
50mV/DIV
I
L
500mA/DIV
3538 G14
V
IN
= 3.3V
V
OUT
= 3.3V
I
LOAD
= 10mA
C
OUT
= 22μF X5R CERAMIC
50μs/DIV
V
OUT
100mV/DIV
BURST
2V/DIV
3538 G15
V
IN
= 3.3V
V
OUT
= 3.3V
I
LOAD
= 30mA
C
OUT
= 22μF X5R CERAMIC