LM3429_14 Datasheet, PDF (37/50 Pages) Texas Instruments – LM3429Q1 N-Channel Controller for Constant Current LED Drivers

LM3429
www.ti.com
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
DESIGN #3: BUCK-BOOST ANALOG DIMMING APPLICATION - 4 LEDs at 2A
10V ± 30V
V_IN
L1
C_IN
R_T
C_CMP
R_CSH
R_ADJ
C_T
1
V_IN
LM3429
2
COMP
14
HSN
R_HSN
13
HSP
R_HSP
3
CSH
12
IS
4
RCT
5
AGND
11
V_CC
C_BYP
10
GATE
R_UV2
R_UV1
6
OVP
7
nDIM
DAP
9
PGND
8
NC
D1
2A
I_LED
C_O
C_FS
R_FS
R_SNS
V_IN
Q1
R_LIM
R_OV2
V_IN
Q2
C_OV
R_OV1
Design #3 Bill of Materials
Qty
Part ID
1
LM3429
1
C_CMP
1
C_F
1
C_FS
2, 1
C_IN, C_O
1
C_OV
1
C_T
1
D1
1
L1
1
Q1
1
Q2
1
R_ADJ
1
R_CSH
1
R_FS
2
R_HSP, R_HSN
1
R_LIM
1
R_OV1
1
R_OV2
1
R_SNS
1
R_T
1
R_UV1
1
R_UV2
Part Value
Boost controller
1.0 µF X7R 10% 10V
2.2 µF X7R 10% 16V
0.1 µF X7R 10% 50V
6.8 µF X7R 10% 50V
47 pF COG/NPO 5% 50V
1000 pF COG/NPO 5% 50V
Schottky 60V 5A
22 µH 20% 7.2A
NMOS 60V 8A
PNP 150V 600 mA
1.0 MΩ potentiometer
12.4 kΩ 1%
10Ω 1%
1.0 kΩ 1%
0.04Ω 1% 1W
18.2 kΩ 1%
499 kΩ 1%
0.05Ω 1% 1W
41.2 kΩ 1%
21 kΩ 1%
150 kΩ 1%
Manufacturer
NSC
MURATA
MURATA
MURATA
TDK
AVX
MURATA
VISHAY
COILCRAFT
VISHAY
FAIRCHILD
BOURNS
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
Part Number
LM3429MH
GRM21BR71A105KA01L
GRM21BR71C225KA12L
GRM21BR71E104KA01L
C4532X7R1H685K
08055A470JAT2A
GRM2165C1H102JA01D
CDBC560-G
MSS1278-223MLB
SI4436DY
MMBT5401
3352P-1-105
CRCW080512K4FKEA
CRCW080510R0FKEA
CRCW08051K00FKEA
WSL2512R0400FEA
CRCW080518K2FKEA
CRCW0805499KFKEA
WSL2512R0500FEA
CRCW080541K2FKEA
CRCW080521K0FKEA
CRCW0805150KFKEA
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