Datasheet

LT3688
25
3688f
TYPICAL APPLICATIONS
CONFIG
V
IN
LT3688
GND
BIASEN/UVLO
BST1
C2
0.22µF
ON OFF
C1
4.7µF
V
OUT1
5V
800mA
V
IN
6V TO 36V
C4
22µF
C6
10pF
C7
10pF
L1
18µH
L2
12µH
R1
523k
R2
100k
R3
316k
R4
100k
C8
1nF
C9
1nF
µP
C3
0.22µF
SW1
DA1
D2D1
BST2
SW2
DA2
FB1
RUN/SS1
WDE
WDI
WDO
RST1
RST2
I/O
I/O
RESET
FB2
RUN/SS2
C
WDT
C
POR1
C
POR2
RT
SYNC
C5
22µF
C12
1nF
3688 TA02
C10
4.7nF
C11
4.7nF
R5
110k
C1-C5: X5R OR X7R
D1, D2: DIODES INC. B140
f
SW
= 500kHz
V
OUT2
3.3V
800mA
5V and 3.3V Regulator with Power-On Reset and Watchdog Timers
CONFIGV
IN
LT3688
GND
BIASEN/UVLO
BST1
C2
0.22µF
V
OUT
1.8V
800mA
V
IN
8V TO 36V
C4
47µF
C6
10pF
L1
10µH
L2
12µH
R1
187k
R6
475k
R7
100k
R2
150k
R3
316k
R4
100k
C8
1nF
C9
1nF
µP
C3
0.22µF
SW1
DA1
D2D1
BST2
SW2
DA2
FB1
RUN/SS1
WDE
WDI
WDO
RST1
RST2
I/O
I/O
RESET
FB2
RUN/SS2
C
WDT
C
POR1
C
POR2
RT
SYNC
C5
22µF
C7
10pF
C12
1nF
3688 TA02
C10
4.7nF
C11
4.7nF
R5
110k
C1-C5: X5R OR X7R
D1, D2: DIODES INC. B140
f
SW
= 500kHz
V
OUT2
3.3V
800mA
C1
4.7µF
3.3V and 1.8V Regulator with Power-On Reset and Watchdog Timers
and Input Under Voltage Lockout