Datasheet

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