LM3429_14 Datasheet, PDF (41/50 Pages) Texas Instruments – LM3429Q1 N-Channel Controller for Constant Current LED Drivers

LM3429
www.ti.com
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
DESIGN #7: BUCK-BOOST THERMAL FOLDBACK APPLICATION - 8 LEDs at 2.5A
15V ± 60V
V_IN
VREF
R_GAIN
L1
C_IN
R_T
R_NTC
C_CMP
D2
R_BIAS
R_CSH
C_T
V_IN
R_UV2
R_UV1
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
6
OVP
7
nDIM
DAP
9
PGND
8
NC
D1
2.5A
I_LED
C_O
Q1
R_LIM
C_FS
R_FS
R_SNS
V_IN
R_OV2
V_IN
Q2
C_OV
R_OV1
Design #7 Bill of Materials
Qty
Part ID
1
LM3429
1
C_CMP
1
C_F
1
C_FS
3
C_IN
1
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
2
R_LIM, R_SNS
1
R_OV2
1
R_T
1
R_UV1
1
R_UV2
Part Value
Boost controller
0.1 µF X7R 10% 25V
2.2 µF X7R 10% 16V
0.1 µF X7R 10% 25V
4.7 µF X7R 10% 100V
6.8 µF X7R 10% 50V
47 pF COG/NPO 5% 50V
1000 pF COG/NPO 5% 50V
Schottky 100V 12A
22 µH 20% 7.2A
NMOS 100V 32A
PNP 150V 600 mA
12.4 kΩ 1%
10Ω 1%
1.0 kΩ 1%
0.04Ω 1% 1W
499 kΩ 1%
49.9 kΩ 1%
13.7 kΩ 1%
150 kΩ 1%
Manufacturer
NSC
MURATA
MURATA
MURATA
TDK
TDK
AVX
MURATA
VISHAY
COILCRAFT
FAIRCHILD
FAIRCHILD
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
Part Number
LM3429MH
GRM21BR71E104KA01L
GRM21BR71C225KA12L
GRM21BR71E104KA01L
C5750X7R2A475K
C4532X7R1H685K
08055A470JAT2A
GRM2165C1H102JA01D
12CWQ10FNPBF
MSS1278-223MLB
FDD3682
MMBT5401
CRCW080512K4FKEA
CRCW080510R0FKEA
CRCW08051K00FKEA
WSL2512R0400FEA
CRCW0805499KFKEA
CRCW080549K9FKEA
CRCW080513K7FKEA
CRCW0805150KFKEA
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