Datasheet

VIN
1
PG
1
PG
2
SW
1
SW
2
FB
1
FB
2
PGND
1
, PGND
2
,
AGND, DAP
LM26420
V
OUT1
3.3V/2A
Vin
4.5V to
5.5V
V
OUT2
1.8V/2A
VIN
c
VIN
2
EN
2
EN
1
C
3
C
4
C
2
C
1
L
1
L
2
C
5
R
7
R
6
R
5
R
3
R
1
R
2
R
4
LM26420
SNVS579F –FEBRUARY 2009–REVISED MARCH 2013 www.ti.com
LM26420Y Design Example 6
Figure 50. LM26420Y (550kHz): V
IN
= 5V, V
OUT1
= 3.3V @ 2.0A and V
OUT2
= 1.8V @ 2.0A
Table 7. Bill of Materials
Part ID Part Value Manufacturer Part Number
U1 2A Buck Regulator TI LM26420Y
C3, C4 22µF, 6.3V, 1206, X5R TDK C3216X5R0J226M
C1, C2, C6 47µF, 6.3V, 1206, X5R TDK C3216X5R0J476M
C5 0.47µF, 10V, 0805, X7R Vishay VJ0805Y474KXQCW1BC
L1, L2 5.0µH, 2.82A Coilcraft MSS7341-502NL
R3, R4 10.0kΩ, 0603, 1% Vishay CRCW060310K0F
R2 12.7kΩ, 0603, 1% Vishay CRCW060312K7F
R5, R6 49.9kΩ, 0603, 1% Vishay CRCW060649K9F
R1 31.6kΩ, 0603, 1% Vishay CRCW060331K6F
R7 4.99Ω, 0603, 1% Vishay CRCW06034R99F
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