Datasheet

LTC3860
7
3860fc
Soft-Start Start-Up Ratiometric Tracking Start-Up
Line Step Transient Response
(2-Phase)
5ms/DIV
3860 G12
V
IN
= 12V
V
OUT1
= 1.2V
0.1μF CAPACITOR ON TRACK/SS1
V
OUT1
200mV/DIV
Coincident Tracking Start-Up
2μs/DIV
3860 G13
CHANNEL 1 TRACKING OFF PULSE GENERATOR
V
OUT1
500mV/DIV
TRACK/SS1
500mV/DIV
2μs/DIV
3860 G14
CHANNEL 1 TRACKING OFF PULSE GENERATOR
V
OUT1
500mV/DIV
TRACK/SS1
500mV/DIV
V
OUT
50mV/DIV
V
IN
5V/DIV
COMP1
100mV/DIV
20μs/DIV
3860 G15
V
IN
= 12V
V
OUT
= 1.8V
V
IN
STEP = 7V TO 14V
I
L1
5A/DIV
I
L2
5A/DIV
Line Step Transient Response
(2-Phase)
V
OUT
50mV/DIV
V
IN
5V/DIV
COMP1
100mV/DIV
20μs/DIV
3860 G16
V
IN
= 12V
V
OUT
= 1.2V
V
IN
STEP = 7V TO 14V
I
L1
5A/DIV
I
L2
5A/DIV
Line Step Transient Response
(Single Phase)
20μs/DIV
V
OUT
= 1.2V
V
IN
STEP = 7V TO 14V
3860 G17
V
OUT
50mV/DIV
I
L
2A/DIV
V
IN
5V/DIV
COMP1
100mV/DIV
TYPICAL PERFORMANCE CHARACTERISTICS