LM3429_14 Datasheet, PDF (38/50 Pages) Texas Instruments – LM3429Q1 N-Channel Controller for Constant Current LED Drivers

LM3429
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
DESIGN #4: BOOST ANALOG DIMMING APPLICATION - 12 LEDs at 700mA
18V - 38V
V_IN
L1
C_IN
R_T
V_REF
Q3
Q4
R_MAX
Q2
C_CMP
C_T
R_ADJ
R_BIAS
R_CSH
V_IN
R_UV2
R_UV1
D1
1
V_IN
LM3429
14
HSN
2
COMP
13
HSP
R_HSN
R_HSP
3
CSH
12
IS
C_FS
R_FS
4
RCT
5
AGND
11
V_CC
C_BYP
10
GATE
700 mA
I_LED
Q1
6
OVP
7
nDIM
DAP
9
PGND
8
NC
R_LIM
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R_SNS
C_O
R_OV2
C_OV ^ROV1
Design #4 Bill of Materials
Qty
Part ID
Part Value
Manufacturer
Part Number
1
LM3429
Boost controller
NSC
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
NSC
LM4040
38
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