Datasheet

LT3970 Series
7
3970fc
Power Good Threshold EN Threshold
Transient Load Response; Load
Current is Stepped from 100mA
to 200mA
Switching Waveforms,
Burst Mode Operation
Transient Load Response; Load
Current is Stepped from 10mA
(Burst Mode Operation) to 110mA
Switching Waveforms, Full
Frequency Continuous Operation
Typical perFormance characTerisTics
T
A
= 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
88
THRESHOLD (%)
89
90
91
92
–25 0 25 50
3970 G25
75 100 125
150
TEMPERATURE (°C)
–50
0.950
THRESHOLD VOLTAGE (V)
0.975
1.000
1.025
1.050
–25 0 25 50
3970 G26
75 100 125 150
V
OUT
100mV/DIV
I
L
100mA/DIV
100µs/DIV
FRONT PAGE APPLICATION
V
IN
= 12V
V
OUT
= 5V
3970 G27
V
OUT
100mV/DIV
I
L
100mA/DIV
100µs/DIV
FRONT PAGE APPLICATION
V
IN
= 12V
V
OUT
= 5V
3970 G28
V
OUT
5mV/DIV
V
SW
5V/DIV
I
L
100mA/DIV
2µs/DIV
FRONT PAGE APPLICATION
V
IN
= 12V
V
OUT
= 5V
I
LOAD
= 10mA
3970 G29
V
OUT
5mV/DIV
V
SW
5V/DIV
I
L
200mA/DIV
1µs/DIV
FRONT PAGE APPLICATION
V
IN
= 12V
V
OUT
= 5V
I
LOAD
= 350mA
3970 G30