Datasheet

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