LM2672N-12 National Semiconductor, LM2672N-12 Datasheet - Page 14

• Manufacturer Part Number: LM2672N-12
• Description: Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LM2672N-12

• Output Current: 1A
• Output Voltage: 12V
• No. Of Pins: 8
• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Mounting Type: Through Hole
• Package / Case: 8 Lead
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

www.national.com
LM2672 Series Buck Regulator
Design Procedure (Fixed Output)
(Continued)
Desg.
Ind.
Ref.
L10
L12
L13
L14
L15
L18
L19
L20
L21
L22
L23
L24
L27
L28
L29
L30
L11
L4
L5
L6
L7
L9
Inductance
(µH)
220
150
100
220
150
100
220
150
100
68
47
33
22
68
47
33
22
68
47
33
22
68
FIGURE 6. LM2672-12
Current
0.32
0.37
0.44
0.52
0.32
0.39
0.48
0.58
0.70
0.83
0.99
0.55
0.66
0.82
0.99
1.17
1.40
1.70
1.00
1.20
1.47
1.78
(A)
67143940 67144310
67148310 67148420
67148320 67148430
67148330 67148440
67143960 67144330
67143970 67144340
67143980 67144350
67143990 67144360
67144000 67144380
67148340 67148450
67148350 67148460
67144040 67144420
67144050 67144430
67144060 67144440
67144070 67144450
67144080 67144460
67144090 67144470
67148370 67148480
67144120 67144500
67144130 67144510
67144140 67144520
67144110 67144490
Through
Hole
FIGURE 8. Inductor Manufacturers’ Part Numbers
Schott
Surface
Mount
01293431
RL-1284-68-43
RL-1284-47-43
RL-1284-33-43
RL-1284-22-43
RL-1284-33-43
RL-1284-22-43
RL-1283-22-43
RL-5470-3
RL-5470-4
RL-5470-5
RL-5470-6
RL-5470-7
RL-5471-2
RL-5471-3
RL-5471-4
RL-5471-5
RL-5471-6
RL-5471-7
RL-5471-2
RL-5471-3
RL-5471-4
RL-5471-5
Through
Hole
14
Renco
RL1500-220 PE-53809 PE-53809-S DO3308-224
RL1500-150 PE-53810 PE-53810-S DO3308-154
RL1500-100 PE-53811 PE-53811-S DO3308-104
RL1500-220 PE-53818 PE-53818-S DO3316-224
RL1500-150 PE-53819 PE-53819-S DO3316-154
RL1500-100 PE-53820 PE-53820-S DO3316-104
RL1500-68 PE-53804 PE-53804-S DO1608-683
RL1500-47 PE-53805 PE-53805-S DO1608-473
RL1500-33 PE-53806 PE-53806-S DO1608-333
RL1500-22 PE-53807 PE-53807-S DO1608-223
RL1500-68 PE-53812 PE-53812-S DO3308-683
RL1500-47 PE-53813 PE-53813-S DO3308-473
RL1500-33 PE-53814 PE-53814-S DO3308-333
RL1500-22 PE-53815 PE-53815-S DO3308-223
RL1500-68 PE-53821 PE-53821-S DO3316-683
Surface
Mount
—
—
—
—
—
—
—
FIGURE 7. LM2672-ADJ
PE-53822 PE-53822-S DO3316-473
PE-53823 PE-53823-S DO3316-333
PE-53824 PE-53824-S DO3316-223
PE-53827 PE-53827-S DO5022P-224
PE-53828 PE-53828-S DO5022P-154
PE-53829 PE-53829-S DO5022P-104
PE-53830 PE-53830-S DO5022P-683
Through
Pulse Engineering
Hole
Surface
Mount
01293432
Coilcraft
Surface
Mount