LM3429_14 Datasheet, PDF (36/50 Pages) Texas Instruments – LM3429Q1 N-Channel Controller for Constant Current LED Drivers

LM3429
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
Applications Information
DESIGN #2: BOOST PWM DIMMING APPLICATION - 9 LEDs at 1A
8V - 28V
V_IN
L1
C_IN
R_T
C_CMP
R_CSH
1
V_IN
LM3429
2
COMP
14
HSN
R_HSN
13
HSP
R_HSP
3
CSH
12
IS
D1
C_FS
R_SNS
R_FS
C_O
C_T
4
RCT
5
AGND
11
V_CC
C_BYP
10
GATE
1A
I_LED
Q1
R_UV2
R_UVH
R_UV1
PWM
6
OVP
7
nDIM
Q2
DAP
9
PGND
8
NC
R_LIM
R_OV2
C_OV ROV1
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Design #2 Bill of Materials
Qty
Part ID
1
LM3429
2
C_CMP, C_FS
1
C_F
2, 1
C_IN, C_O
1
C_OV
1
C_T
1
D1
1
L1
1
Q1
1
Q2
2
R_CSH, R_OV1
1
R_FS
2
R_HSP, R_HSN
1
R_LIM
1
R_OV2
1
R_SNS
1
R_T
1
R_UV1
1
R_UV2
1
R_UVH
Part Value
Boost controller
0.1 µF X7R 10% 25V
2.2 µF X7R 10% 16V
6.8 µF X7R 10% 50V
47 pF COG/NPO 5% 50V
1000 pF COG/NPO 5% 50V
Schottky 60V 5A
33 µH 20% 6.3A
NMOS 60V 8A
NMOS 60V 115 mA
12.4 kΩ 1%
10Ω 1%
1.0 kΩ 1%
0.06Ω 1% 1W
499 kΩ 1%
0.1Ω 1% 1W
35.7 kΩ 1%
1.82 kΩ 1%
10 kΩ 1%
17.8 kΩ 1%
Manufacturer
NSC
MURATA
MURATA
TDK
AVX
MURATA
COMCHIP
COILCRAFT
VISHAY
ON SEMI
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
Part Number
LM3429MH
GRM21BR71E104KA01L
GRM21BR71C225KA12L
C4532X7R1H685K
08055A470JAT2A
GRM2165C1H102JA01D
CDBC560-G
MSS1278-333MLB
SI4436DY
2N7002ET1G
CRCW080512K4FKEA
CRCW080510R0FKEA
CRCW08051K00FKEA
WSL2512R0600FEA
CRCW0805499KFKEA
WSL2512R1000FEA
CRCW080535K7FKEA
CRCW08051K82FKEA
CRCW080510KFKEA
CRCW080517K8FKEA
36
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