LM3421MH/NOPB National Semiconductor, LM3421MH/NOPB Datasheet - Page 46

• Manufacturer Part Number: LM3421MH/NOPB
• Description: IC LED DRVR HP CONS CURR 16TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3421MH/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
• Voltage - Output: 3 V ~ 72 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): No
• Efficiency: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM3421MH/NOPB; LM3421MH

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DESIGN #8 Bill of Materials
Qty
1
1
1
0
4
4
1
1
1
1
2
2
1
1
1
2
1
1
1
2
1
1
1
1
1
Part ID
LM3421
C
C
C
C
C
C
C
C
D1
L1, L2
Q1, Q2
Q3
R
R
R
R
R
R
R
R
R
R
R
R
BYP
CMP
FS
IN
O
SEP
OV
T
CSH
FS
HSP
LIM
OV1
OV2
REF1
SNS
T
UV1
UV2
UVH
, R
, R
HSN
REF2
Part Value
SEPIC controller
2.2 µF X7R 10% 16V
0.47 µF X7R 10% 25V
DNP
4.7 µF X7R 10% 100V
10 µF X7R 10% 50V
1.0 µF X7R 10% 100V
47 pF COG/NPO 5% 50V
1000 pF COG/NPO 5% 50V MURATA
Schottky 60V 5A
68 µH 20% 4.3A
NMOS 60V 8A
NMOS 60V 115 mA
12.4 kΩ 1%
0Ω 1%
750Ω 1%
0.04Ω 1% 1W
15.8 kΩ 1%
499 kΩ 1%
49.9 kΩ 1%
0.1Ω 1% 1W
49.9 kΩ 1%
1.62 kΩ 1%
10.0 kΩ 1%
16.9 kΩ 1%
46
Manufacturer
NSC
MURATA
MURATA
TDK
TDK
TDK
AVX
COMCHIP
COILCRAFT
VISHAY
ON-SEMI
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
Part Number
LM3421MH
GRM21BR71C225KA12L
GRM21BR71E474KA01L
C5750X7R2A475K
C4532X7R1H106K
C4532X7R2A105K
08055A470JAT2A
GRM2165C1H102JA01D
CDBC560-G
DO3340P-683
SI4436DY
2N7002ET1G
CRCW080512K4FKEA
CRCW08050000OZEA
CRCW0805750RFKEA
WSL2512R0400FEA
CRCW080515K8FKEA
CRCW0805499KFKEA
CRCW080549K9FKEA
WSL2512R1000FEA
CRCW080549K9FKEA
CRCW08051K62FKEA
CRCW080510K0FKEA
CRCW080516K9FKEA