LM26420, LM26420-Q0, LM26420-Q1
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SNVS579J –FEBRUARY 2009–REVISED SEPTEMBER 2015
8.2.3.2 Detailed Design Procedure
Table 5. Bill Of Materials
PART ID
U1
PART VALUE
MANUFACTURER
TI
PART NUMBER
LM26420X
2 A Buck Regulator
15 µF, 6.3 V, 1206, X5R
33 µF, 6.3 V, 1206, X5R
22 µF, 6.3 V, 1206, X5R
0.47 µF, 10 V, 0805, X7R
1.0 µH, 7.9A
C3, C4
C1
TDK
C3216X5R0J156M
C3216X5R0J336M
C3216X5R0J226M
VJ0805Y474KXQCW1BC
RLF7030T-1R0M6R4
RLF7030T-1R5M6R1
CRCW060310K0F
CRCW06034K99F
CRCW060649K9F
CRCW060321K5F
CRCW06034R99F
TDK
C2
TDK
C5
Vishay
TDK
L1
L2
1.5 µH, 6.5A
TDK
R3, R4
R1
10.0 kΩ, 0603, 1%
4.99 kΩ, 0603, 1%
49.9 kΩ, 0603, 1%
21.5 kΩ, 0603, 1%
4.99 Ω, 0603, 1%
Vishay
Vishay
Vishay
Vishay
Vishay
R5, R6
R2
R7
Also see Detailed Design Procedure above.
8.2.3.3 Application Curves
See Application Curves above.
8.2.4 LM26420Y 550 kHz, 0.8-V Typical High-Efficiency Application Circuit
Vin
3V to 5.5V
C
R
7
C
5
C
4
3
R
5
R
6
VIN
1
VIN
c
VIN
2
PG
PG
EN
SW
FB
1
2
2
2
2
LM26420
EN
1
VOUT2
0.8V/2A
VOUT1
1.8V/2A
L
L
2
1
SW
1
R
R
1
2
FB
1
C1
C
1
C
6
PGND , PGND ,
1
2
AGND, DAP
R
3
R
4
Figure 51. LM26420Y (550 kHz): VIN = 5 V, VOUT1 = 1.8 V at 2 A and VOUT2 = 0.8 V at 2 A
8.2.4.1 Design Requirements
See Design Requirements above.
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