Datasheet

LT3690
26
3690fa
Typical applicaTions
1.8V Step-Down Converter
3690 TA05
LT3690
GND
(FIXED FREQUENCY AT V
IN
< 18.5V)
1nF
V
IN
BIAS
UVLO
EN
SS
V
C
V
CCINT
SYNC
PG
BST
SW
FB
RT
10µF
V
IN
3.9V TO 36V
AUXILIARY SUPPLY
3.3V OR 5V
0.47µF
ƒ = 500kHz
16k
40.2k
100µF
V
OUT
1.8V
4A
POWER GOOD
1nF
15k
18.7k
L
4.7µH
0.68µF
1µF
ON OFF
100k
2.5V Step-Down Converter
3690 TA04
LT3690
GND
(FIXED FREQUENCY AT V
IN
< 21V)
1nF
V
IN
BIAS
UVLO
EN
SS
V
C
V
CCINT
SYNC
PG
BST
SW
FB
RT
10µF
V
IN
3.9V TO 36V
0.47µF
ƒ = 600kHz
15k
32.4k
100µF
MBR0540
V
OUT
2.5V
4A
1nF
75k
160k
L
3.3µH
1µF
ON OFF