LTC3108-1
TYPICAL PERFORMANCE CHARACTERISTICS
Start-Up Voltage Sequencing
V
IN
= 50mV
1:100 RATIO TRANSFORMER
C
OUT
= 220μF
CSTORE = 470μF
C
LDO
= 2.2μF
T
A
= 25°C, unless otherwise noted.
V
OUT
and PGD Response
During a Step Load
50mA LOAD STEP
C
OUT
= 220μF
CH1
VSTORE
1V/DIV
CH2, V
OUT
1V/DIV
CH3, V
LDO
1V/DIV
CH2
V
OUT
, 1V/DIV
CH1
PGD, 1V/DIV
10sec/DIV
31081 G12
5ms/DIV
31081 G13
V
OUT
Ripple
30μA LOAD
C
OUT
= 220μF
LDO Step Load Response
20mV/
DIV
V
LDO
20mV/DIV
I
LDO
5mA/DIV
100ms/DIV
31081 G14
200μs/DIV
0mA TO 3mA LOAD STEP
C
LDO
= 2.2μF
31081 G15
Enable Input and V
OUT2
Running on Storage Capacitor
CSTORE = 470μF
V
OUT
LOAD = 100μA
CH3
VSTORE
1V/DIV
CH2, V
OUT
1V/DIV
CH4, V
LDO
1V/DIV
CH1, V
IN
50mV/DIV
CH2
V
OUT2
1V/DIV
CH1
V
OUT2_EN
1V/DIV
1ms/DIV
10mA LOAD ON V
OUT2
C
OUT
= 220μF
31081 G16
5sec/DIV
31081 G17
31081fa
6
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
