LM3429MH/NOPB National Semiconductor, LM3429MH/NOPB Datasheet - Page 25

• Manufacturer Part Number: LM3429MH/NOPB
• Description: IC LED DRVR HP CONS CURR 14TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3429MH/NOPB

• Constant Current: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 2MHz
• Voltage - Supply: 4.5 V ~ 75 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP Exposed Pad, 14-eTSSOP 14-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): No
• Efficiency: 95%
• For Use With: LM3429BSTEVAL - BOARD EVAL FOR BOOST LM3429LM3429BKBSTEVAL - BOARD EVAL FOR BUCK-BOOST LM3429
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3429MH

The closest standard resistor is 21 kΩ making V
The chosen components from step 11 are:
12. OUTPUT OVLO
Solve for R
Design #1 Bill of Materials
Qty
1
1
1
1
3
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
OV2
:
Part ID
LM3429
C
C
C
C
C
C
C
D1
L1
Q1
Q2
R
R
R
R
R
R
R
R
R
R
CMP
F
FS
IN
O
OV
T
CSH
FS
HSP
LIM
OV1
OV2
SNS
T
UV1
UV2
, R
HSN
Part Value
Boost controller
0.22 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 MURATA
Schottky 100V 12A
33 µH 20% 6.3A
NMOS 100V 32A
PNP 150V 600 mA
12.4 kΩ 1%
10Ω 1%
1.0kΩ 1%
0.04Ω 1% 1W
15.8 kΩ 1%
499 kΩ 1%
0.1Ω 1% 1W
35.7 kΩ 1%
21 kΩ 1%
150 kΩ 1%
TURN-ON
:
25
The closest standard resistor is 499 kΩ therefore V
Solve for R
The closest standard resistor is 15.8 kΩ making V
The chosen components from step 12 are:
Manufacturer
NSC
MURATA
MURATA
MURATA
TDK
TDK
AVX
VISHAY
COILCRAFT
FAIRCHILD
FAIRCHILD
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
OV1
:
Part Number
LM3429MH
GRM21BR71E224KA01L
GRM21BR71C225KA12L
GRM21BR71E104KA01L
C5750X7R2A475K
C4532X7R1H685K
08055A470JAT2A
GRM2165C1H102JA01D
12CWQ10FNPBF
MSS1278-333MLB
FDD3682
MMBT5401
CRCW080512K4FKEA
CRCW080510R0FKEA
CRCW08051K00FKEA
WSL2512R0400FEA
CRCW080515K8FKEA
CRCW0805499KFKEA
WSL2512R1000FEA
CRCW080535K7FKEA
CRCW080521K0FKEA
CRCW0805150KFKEA
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TURN-OFF
HYSO
is:
: