Datasheet

D1
OVP
LM3429
nDIM
PGND
NC
DAP
GATE
COMP
CSH
RCT
IS
HSN
HSP
L1
C
IN
C
BYP
Q1
C
CMP
R
CSH
C
T
R
UV2
R
UV1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
R
HSN
R
HSP
2.5A
C
O
R
SNS
AGND
R
T
R
FS
C
FS
I
LED
Q2
R
OV2
R
OV1
C
OV
V
IN
V
IN
V
IN
15V ± 60V
V
IN
V
CC
V
REF
R
BIAS
D2
R
NTC
R
GAIN
V
IN
R
LIM
LM3429, LM3429-Q1
www.ti.com SNVS616G –APRIL 2009–REVISED MAY 2013
DESIGN #7: BUCK-BOOST THERMAL FOLDBACK APPLICATION - 8 LEDs at 2.5A
Design #7 Bill of Materials
Qty Part ID Part Value Manufacturer Part Number
1 LM3429 Boost controller TI LM3429MH
1 C
CMP
0.1 µF X7R 10% 25V MURATA GRM21BR71E104KA01L
1 C
F
2.2 µF X7R 10% 16V MURATA GRM21BR71C225KA12L
1 C
FS
0.1 µF X7R 10% 25V MURATA GRM21BR71E104KA01L
3 C
IN
4.7 µF X7R 10% 100V TDK C5750X7R2A475K
1 C
O
6.8 µF X7R 10% 50V TDK C4532X7R1H685K
1 C
OV
47 pF COG/NPO 5% 50V AVX 08055A470JAT2A
1 C
T
1000 pF COG/NPO 5% 50V MURATA GRM2165C1H102JA01D
1 D1 Schottky 100V 12A VISHAY 12CWQ10FNPBF
1 L1 22 µH 20% 7.2A COILCRAFT MSS1278-223MLB
1 Q1 NMOS 100V 32A FAIRCHILD FDD3682
1 Q2 PNP 150V 600 mA FAIRCHILD MMBT5401
2 R
CSH
, R
OV1
12.4 kΩ 1% VISHAY CRCW080512K4FKEA
1 R
FS
10Ω 1% VISHAY CRCW080510R0FKEA
2 R
HSP
, R
HSN
1.0 kΩ 1% VISHAY CRCW08051K00FKEA
2 R
LIM
, R
SNS
0.04Ω 1% 1W VISHAY WSL2512R0400FEA
1 R
OV2
499 kΩ 1% VISHAY CRCW0805499KFKEA
1 R
T
49.9 kΩ 1% VISHAY CRCW080549K9FKEA
1 R
UV1
13.7 kΩ 1% VISHAY CRCW080513K7FKEA
1 R
UV2
150 kΩ 1% VISHAY CRCW0805150KFKEA
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