LM3421MH/NOPB National Semiconductor, LM3421MH/NOPB Datasheet - Page 44

• 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 #7 Bill of Materials
Qty
1
1
1
1
4
4
1
1
1
1
1
1
1
1
1
2
1
2
2
2
1
1
1
1
1
Part ID
LM3423
C
C
C
C
C
C
C
C
D1
D2
L1
Q1
Q2
Q5
R
R
R
R
R
R
R
R
R
R
BYP
CMP
FS
IN
O
OV
T
TMR
CSH
FS
FLT
HSP
LIM
OV1
OV2
T
UV1
UV2
, R
, R
, R
, R
SNS
PU2
HSN
OV1
Part Value
Buck-boost controller
2.2 µF X7R 10% 16V
0.33 µF X7R 10% 25V
0.1 µF X7R 10% 25V
4.7 µF X7R 10% 100V
10 µF X7R 10% 50V
47 pF COG/NPO 5% 50V
1000 pF COG/NPO 5% 50V MURATA
220 pF COG/NPO 5% 50V
Schottky 100V 12A
Zener 10V 500mA
22 µH 20% 7.2A
NMOS 100V 32A
PMOS 70V 5.7A
PNP 150V 600 mA
12.4 kΩ 1%
10Ω 1%
100 kΩ 1%
1.0 kΩ 1%
0.04Ω 1% 1W
15.8 kΩ 1%
499 kΩ 1%
49.9 kΩ 1%
13.7 kΩ 1%
150 kΩ 1%
44
Manufacturer
NSC
MURATA
MURATA
MURATA
TDK
TDK
AVX
MURATA
VISHAY
ON-SEMI
COILCRAFT
FAIRCHILD
ZETEX
FAIRCHILD
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
Part Number
LM3423MH
GRM21BR71C225KA12L
GRM21BR71E334KA01L
GRM21BR71E104KA01L
C5750X7R2A475K
C4532X7R1H106K
08055A470JAT2A
GRM2165C1H102JA01D
GRM2165C1H221JA01D
12CWQ10FNPBF
BZX84C10LT1G
MSS1278-223MLB
FDD3682
ZXMP7A17K
MMBT5401
CRCW080512K4FKEA
CRCW080510R0FKEA
CRCW0805100KFKEA
CRCW08051K00FKEA
WSL2512R0400FEA
CRCW080515K8FKEA
CRCW0805499KFKEA
CRCW080549K9FKEA
CRCW080513K7FKEA
CRCW0805150KFKEA