FAN53541 Datasheet, PDF (2/15 Pages) Fairchild Semiconductor – 2.4 MHz, 5 A TinyBuck Synchronous Buck Regulator

Recommended External Components
Table 1. Recommended External Components for 5 A Maximum Load Current
Component
Description
Vendor
Parameter Typical
L1
470 nH Nominal
See Table 2
L
0.47
C_OUT
10 F, 6.3V, X5R, 0805, 2 Pieces _{GRM21BR60J106M (Murata)}
C
20
C_IN
10 F, 6.3 V, X5R, 0805
C2012X5R0J106M (TDK)
C
10
C_IN1
10 nF, 25 V, X7R, 0402
Any
C
10
Unit
H
F
F
nF
Table 2. Recommended Inductors
Manufacturer
Part#
L (nH) DCR (mΩ) I_MAXDC(1)
L
Bourns
SRP5012-R47M
470
19
6.0
5.1
Bourns
SRP4012-R47M
470
20
5.5
4.6
Coilcraft
XPL4020-471ML
470
19
7.2
4.2
Inter-Technical⁽²⁾
SC2511-R47M
470
2.6
16.0
6.5
TDK
VLC5020T-R47M
470
15
5.4
5.0
Vishay
IHLP1616ABERR47M01 470
20
5.0
4.5
Notes:
1. I_MAXDC is the lesser current to produce 40^°C temperature rise or 30% inductance roll-off.
2. Inductor used for efficiency and temperature rise measurements.
Component Dimensions
W
H
4.5
1.2
4.0
1.2
4.2
2.0
6.5
3.0
5.0
2.0
4.1
1.2
© 2013 Fairchild Semiconductor Corporation
FAN53541 • Rev. 1.0.2
2
www.fairchildsemi.com