Datasheet

LT3976
8
3976f
For more information www.linear.com/3976
Typical perForMance characTerisTics
Start-Up/Dropout Performance Start-Up/Dropout Performance Burst Mode Switching Waveforms
Dropout Switching Waveforms
Full Frequency Switching
Waveforms
T
A
= 25°C, unless otherwise noted.
Load Transient: 0.5A to 4.5A Load Transient: 10mA to 4A
V
IN
1V/DIV
V
OUT
1V/DIV
V
OUT
V
IN
100ms/DIV2.5Ω LOAD
(2A IN REGULATION)
3976 G33
V
IN
1V/DIV
V
OUT
1V/DIV
V
OUT
V
IN
100ms/DIV1kΩ LOAD
(5mA IN REGULATION)
3976 G34
V
SW
5V/DIV
V
OUT
10mV/DIV
I
L
0.5A/DIV
5µs/DIVV
IN
= 12V
V
OUT
= 3.3V
I
LOAD
= 20mA
C
OUT
= 47µF
3976 G35
V
SW
5V/DIV
V
OUT
20mV/DIV
I
L
1A/DIV
1µs/DIVV
IN
= 12V
V
OUT
= 3.3V
I
LOAD
= 1A
C
OUT
= 47µF
3976 G36
V
SW
2V/DIV
V
OUT
50mV/DIV
I
L
1A/DIV
5µs/DIVV
IN
= 5V
V
OUT
SET FOR 5V
I
LOAD
= 0.5A
C
OUT
= 47µF
3976 G37
V
OUT
500mV/DIV
I
L
2A/DIV
50µs/DIV
3976 G39
12V
IN
3.3V
OUT
C
OUT
= 2 × 47µF
V
OUT
200mV/DIV
I
L
2A/DIV
50µs/DIV12V
IN
3.3V
OUT
C
OUT
= 2 × 47µF
3976 G38