Datasheet

LT3663
12
3663fc
For more information www.linear.com/LT3663
Typical applicaTions
2.5V Step-Down Converter
1.2V Step-Down Converter
5V Step-Down Converter
3663 TA02
LT3663
V
IN
V
IN
7.5V TO 36V
TRANSIENT
TO 60V
RUN
I
LIM
BOOST
SW
GND
C3
0.1µF
C1
4.7µF
D1: DIODES INC, DFLS260
L: TDK, VLCF5020T-6R8N1R3-1
C2
22µF
R1
59k
R
ILIM
28.7k
R2
11k
L
6.8µH
D1
I
SENSE
V
OUT
V
OUT
5V
1.2A
FB
ON OFF
3663 TA04
LT3663
V
IN
V
IN
7.5V TO 36V
TRANSIENT
TO 60V
RUN
I
LIM
BOOST
SW
GND
C3
1µF
C1
4.7µF
D1: DIODES INC, DFLS260
D3: ON SEMI, MBR0560
L: TDK, VLCF5020T-3R3N2R0-1
C2
22µF
R1
210k
R
ILIM
28.7k
R2
100k
L
3.3µH
D1
I
SENSE
V
OUT
V
OUT
2.5V
1.2A
D3
FB
ON OFF
3663 TA05
LT3663
V
IN
V
IN
7.5V TO 23V
RUN
I
LIM
BOOST
SW
GND
C3
0.22µF
C1
4.7µF
D1: DIODES INC, DFLS240
D3: ON SEMI, MBR0540
L: TDK, VLCF5020T-3R3N2R0-1
C2
22µF
R1
49.9k
R
ILIM
28.7k
R2
100k
L
3.3µH
D1
I
SENSE
V
OUT
V
OUT
1.2V
1.2A
D3
FB
ON OFF
3663 TA07
LT3663-5
V
IN
RUN
I
LIM
SW
BOOST
GND
C2
0.1µF
16V
C1
2.2µF
50V
1206
C3
47µF
1206
10V
20%
L16-0017
BH ELECTRONICS
1761ES5-3.3
R1
10k
D1
DFLS260
60V
2A
I
SENSE
V
OUT
C5
2.2µF
0603
10V
T1
4
2
3
1
10µH
10µH
1
2
3 4
5
D2
1 3
2
R3
100
0805
C4
47pF
50V
0603
CMPSH-3E
SOT-23
V
OUTS
R2
100k
NOTE: 60V MAX
TRANSIENT VOLTAGE
R
ILIM
75k
V
IN
7.5V TO 36V
HVBUCK
5V
600mA
IN
GND
SHDN
OUT
BYP
C6
0.01µF
10V
0403
C7
10µF
6.3V
0603
3.3V
50mA
RTN
LT3663-5 5V Step-Down Regulator
with Isolated 3.3V Output