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dc1859afa
DEMO MANUAL DC1859A
PARTS LIST
ITEM
QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
2
1
C2
CAP, 0805 10µF 10% 10V X5R
MURATA GRM21BR61A106KE19L
3
1
C3
CAP, 0603 4.7µF 10% 10V X5R
AVX 0603ZD475KAT2A
4
1
C4
CAP, 0603 0.1µF 10% 25V X7R
AVX 06033C104KAT2A
5
2
C5, C6
CAP, 1206 22µF 20% 25V X5R
MURATA GRM31CR61E226ME15L
7
1
C8
CAP, 0805 1µF 20% 16V X5R
AVX 0805YD105MAT2A
8
1
C9
CAP, 0603 680pF 10% 25V X7R
AVX 06033C681KAT2A
9
1
C10
CAP, 0603 56pF 5% 50V C0G
AVX 06035A560JAT2A
12
2
L1, L2
IND, 4.7µH
COILCRAFT XAL6060-472MEC
14
1
R1
RES, 0603 28k 1% 1/10W
VISHAY CRCW060328K0FKEA
16
1
R4
RES, 0603 1M 1% 1/10W
VISHAY CRCW06031M00FKEA
17
1
R5
RES. 0603 110k 1% 1/10W
VISHAY CRCW0603110KFKEA
18
1
R6
RES, 0603 51.1k 1% 1/10W
VISHAY CRCW060351K1FKEA
19
2
R8, R9
RES, 0603 1M 5% 1/10W
VISHAY CRCW06031M00JNEA
20
1
U1
IC, DC/DC CONVERTER
LINEAR TECH. LTC3124EDHC#PBF
Additional Demo Board Circuit Components
1
0
C1, C11
CAP. 7343 OPTION
OPTION
6
0
C7
CAP, 0603 OPTION
OPTION
15
0
R3, R7
RES, 0603 OPTION
OPTION
Hardware: For Demo Board Only
10
6
E1, E2, E3, E4, E5, E6
TURRET
MILL MAX 2501-2-00-80-00-00-07-0
11
2
JP1, JP2
HEADER, 3 PIN SINGLE ROW
SULLINS, NRPN031PAEN-RC
13
4
MH1, MH2, MH3, MH4
STANDOFF, SNAP ON
KEYSTONE_8831
21
2
JP1, JP2
SHUNT
SAMTEC 2SN-BK-G
QUICK START PROCEDURE
Output Short Circuit Protection
The LTC3124 features safe short-circuit and thermal
protection. The part can operate continuously with output
shorted while maintaining a maximum set current limit. The
peak switch current is reduced during overload to about
2A and is restored to 3.5A once the output exceeds 1.5V.
Figure 5. The DC1859 Ramps the Output Slowly at Start-Up
without Generating an Input Current Surge
