Datasheet

GND
FB
Vin
SW
EN
1
C
12V
3
2
1
4
5
3
R
1
L
1
D
2
C
2
R
1
R
LOAD
R
3
C
V
IN
1 M:
10 PF
10V
6.8 PH
2.9A
2A 20V
86.6k
220 pF
25V
10.2k
10 PF
25V
FB
SW
Vin
EN
AGND
PGND
3
COPPER
1
2
COPPER
6
5
4
LMR62421
www.ti.com SNVS734B –OCTOBER 2011–REVISED APRIL 2013
For certain high power applications, the PCB land may be modified to a "dog bone" shape (see Figure 24).
Increasing the size of ground plane, and adding thermal vias can reduce the R
θJA
for the application.
Figure 24. PCB Dog Bone Layout
LMR62421 Design Example 1
Figure 25. Vin = 3V - 5V, Vout = 12V @ 500 mA
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