Datasheet

700 mA
C
O
R
SNS
D1
OVP
LM3429
nDIM
PGND
NC
DAP
GATE
COMP
CSH
RCT
IS
HSN
HSP
L1
C
IN
C
BYP
R
LIM
Q1
C
CMP
C
T
R
UV2
R
UV1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
R
HSN
R
HSP
AGND
R
T
R
FS
C
FS
R
BIAS
R
MAX
Q2
Q3
V
REF
R
ADJ
Q4
R
CSH
I
LED
R
OV1
R
OV2
C
OV
V
IN
18V - 38V
V
IN
V
CC
V
IN
LM3429, LM3429-Q1
SNVS616G –APRIL 2009–REVISED MAY 2013 www.ti.com
DESIGN #4: BOOST ANALOG DIMMING APPLICATION - 12 LEDs at 700mA
Design #4 Bill of Materials
Qty Part ID Part Value Manufacturer Part Number
1 LM3429 Boost controller TI LM3429MH
1 C
CMP
1.0 µF X7R 10% 10V MURATA GRM21BR71A105KA01L
1 C
F
2.2 µF X7R 10% 16V MURATA GRM21BR71C225KA12L
1 C
FS
0.1 µF X7R 10% 50V MURATA GRM21BR71E104KA01L
2, 1 C
IN
, 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 47 µH 20% 5.3A COILCRAFT MSS1278-473MLB
1 Q1 NMOS 100V 32A FAIRCHILD FDD3682
1 Q2 NPN 40V 200 mA FAIRCHILD MMBT3904
1 Q3, Q4 (dual pack) Dual PNP 40V 200 mA FAIRCHILD FFB3906
1 R
ADJ
100 kΩ potentiometer BOURNS 3352P-1-104
1 R
BIAS
40.2 kΩ 1% VISHAY CRCW080540K2FKEA
1 R
CSH
, R
OV1
, R
UV1
12.4 kΩ 1% VISHAY CRCW080512K4FKEA
1 R
FS
10Ω 1% VISHAY CRCW080510R0FKEA
2 R
HSP
, R
HSN
1.05 kΩ 1% VISHAY CRCW08051K05FKEA
1 R
LIM
0.06Ω 1% 1W VISHAY WSL2512R0600FEA
1 R
MAX
4.99 kΩ 1% VISHAY CRCW08054K99FKEA
1 R
OV2
499 kΩ 1% VISHAY CRCW0805499KFKEA
1 R
SNS
0.15Ω 1% 1W VISHAY WSL2512R1500FEA
1 R
T
35.7 kΩ 1% VISHAY CRCW080535K7FKEA
1 R
UV2
100 kΩ 1% VISHAY CRCW0805100KFKEA
1 V
REF
5V precision reference TI LM4040
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