Datasheet

LTC3876
6
3876f
TYPICAL PERFORMANCE CHARACTERISTICS
Transient Response VDDQ
(Discontinuous Mode)
Transient Response VTT
(Forced Continuous Mode)
Load Step VDDQ
(Discontinuous Mode)
Load Release VDDQ
(Discontinuous Mode)
Transient Response VDDQ
(Forced Continuous Mode)
Load Step VDDQ
(Forced Continuous Mode)
Load Release VDDQ
(Forced Continuous Mode)
I
LOAD
20A/DIV
V
SW
20V/DIV
I
L
20A/DIV
10µs/DIV
3876 G01
LOAD TRANSIENT = 0A TO 15A
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
V
OUT
50mV/DIV
V
SW
20V/DIV
I
LOAD
20A/DIV
I
L
20A/DIV
5µs/DIV
3876 G03
LOAD RELEASE = 15A TO 500mA
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
V
OUT
50mV/DIV
I
LOAD
20A/DIV
V
SW
20V/DIV
I
L
20A/DIV
10µs/DIV
3876 G04
LOAD TRANSIENT = 0A TO 15A
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
V
OUT
50mV/DIV
V
SW
20V/DIV
I
LOAD
20A/DIV
I
L
20A/DIV
5µs/DIV
3876 G05
LOAD STEP = 500mA TO 15A
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
V
OUT
50mV/DIV
I
LOAD
20A/DIV
V
SW
20V/DIV
I
L
20A/DIV
5µs/DIV
3876 G06
LOAD RELEASE = 15A TO 500mA
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
V
OUT
50mV/DIV
I
LOAD
20A/DIV
V
SW
20V/DIV
V
OUT
50mV/DIV
I
L
20A/DIV
10µs/DIV
3876 G07
LOAD TRANSIENT = 0A TO 15A
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
I
LOAD
20A/DIV
I
L
10A/DIV
5µs/DIV
3876 G09
LOAD RELEASE = 10A TO 0A
V
IN
= 12V
V
OUT
= 0.75V
FIGURE 10 CIRCUIT, VTT CHANNEL 2
V
OUT
50mV/DIV
V
SW
20V/DIV
Load Step VTT
(Forced Continuous Mode) Load Release VTT
I
LOAD
20A/DIV
V
SW
20V/DIV
V
OUT
50mV/DIV
I
L
20A/DIV
5µs/DIV
3876 G02
LOAD STEP = 0A TO 15A
V
IN
= 12V
V
OUT
= 1.5V
FIGURE 10 CIRCUIT, VDDQ CHANNEL 1
I
LOAD
20A/DIV
V
SW
20V/DIV
I
L
10A/DIV
5µs/DIV
3876 G08
LOAD STEP = 0A TO 10A
V
IN
= 12V
V
OUT
= 0.75V
FIGURE 10 CIRCUIT, VTT CHANNEL 2
V
OUT
50mV/DIV