LTC1624
U
TYPICAL APPLICATIONS
V
IN
3.6V TO 18V
C
IN
+
1000pF
22µF
35V
× 2
R
SENSE
0.05Ω
1
8
7
6
–
V
SENSE
IN
22µF
35V
+
D1
0.1µF
D2
CMDSH-3
MBRS130LT3
2
3
L1a*
BOOST
/RUN
LTC1624
I
TH
C
C
V
OUT
330pF
M1
Si6426DQ
V
5V
1A
OUT
TG
V
FB
R
L1b*
C
C
B
100pF
6.8k
0.1µF
4
5
R2
35.7k
1%
SW
GND
C
OUT
+
100µF
16V
R1
11k
1%
× 2
* COILTRONICS CTX20-4
1624 F17
Figure 17. 5V/1A SEPIC Converter with Output Derived Boost Voltage
V
IN
13V TO
28V
+
C
, C
IN1 IN2
1000µF
35V
R
R
, 0.015Ω
, 0.015Ω
SENSE1
× 2
SENSE2
C4, 0.1µF
C5
3.3µF
50V
C7
3.3µF
50V
LTC1624
1
2
3
8
7
6
–
V
C
SENSE
IN
C
100pF
BOOST
TG
I
/RUN
TH
C
B
0.1µF
M1*
V
FB
V
12V
10A
L1
R1
11k
1%
OUT
4
5
R
C
SW
GND
20k
D2
R5
MBR0540
C
220Ω
+
OUT
R2
100k
1%
C10
220pF
D1*
2700µF
16V
Z1
IN 755
C9
0.1µF
1624 F18
C
, C = SANYO 35MV1000GX
M1 = INTERNATIONAL RECTIFIER IRL3803
R , R = IRC LR2010-01-R015-F
SENSE1 SENSE2
* BOTH D1 AND M1 MOUNTED TO SAME
THERMALLOY #6399B HEAT SINK
IN1 IN2
C5, C7 = WIMA MKS2
C
= SANYO 16MV2700GX
OUT
D1 = MOTOROLA MBR2535CT
L1 = PULSE ENGINEERING PO472
Figure 18. 24V to 12V/10A Buck Converter with Output-Derived Boost Voltage
24
Linear [ Linear ]
