Datasheet

ADP2441 Data Sheet
Rev. A | Page 28 of 32
V
IN
= 36 V ± 10%, V
OUT
= 3.3 V, f
SW
= 300 kHz.
R7
50k
EXT
V
IN
36V
F
SW
300kHz
FB
COMP
EN
PGOOD
FREQ
SS/TRK
PGND
VIN
SW
BST
AGND
VCC
ADP2441
V
OUT
3.3V, 1A
C3
1µF/25V
C4
1µF/25V
C11
10nF
L1
33.3µH
R9
300k
PGOOD
TRK
R5
91k
C6
0.1µF
C7
47µF
C8
47µF
C2
4.7µF/
50V
C1
4.7µF/
50V
C5
10nF/50V
C10
560pF
R3
10k
10581-060
R2
45k
Figure 63. ADP2441 Typical Application Circuit, V
IN
= 36 V ± 10%, V
OUT
= 3.3 V, f
SW
= 300 kHz
Table 17. Calculated Component Values for Figure 63
Qty. Ref Value Description Part Number
2 C1, C2 4.7 µF Capacitor ceramic, X7R, 50 V GRM31CR71H475KA12L
2 C3, C4 1 µF Capacitor ceramic, 1 µF, 25 V, X7R, 10%, 0603 GRM188R71E105KA12D
2 C5, C11 10 nF Capacitor ceramic, 10,000 pF, 50 V, 10%, X7R, 0603 ECJ-1VB1H103K
1 C7 47 µF Capacitor ceramic, 47 µF, 6.3 V, X7R, 1210 GRM32ER70J476KE20L
1 C8 47 µF Capacitor ceramic, 47 µF, 6.3 V, X7R, 1210 GRM32ER70J476KE20L
1 L1 33.3 µH Inductor, 33.3 µH CoilCraft MSS1038T-333ML
1 C6 0.1 µF Capacitor ceramic, 0.1 µF, 50 V, X7R, 0805 ECJ-2FB1H104K
1 C10 560 pF Capacitor ceramic, 50 V Vishay, Panasonic
1 R9 300 kΩ Resistor, 1/10 W, 1%, 0603, SMD
1 R5 91 kΩ Resistor, 1/10 W, 1%, 0603, SMD
1 R2 45 kΩ Resistor, 1/10 W, 1%, 0603, SMD
1 R3 10 kΩ Resistor, 1/10 W, 1%, 0603, SMD
1 R7 50 kΩ Resistor, 1/10 W, 1%, 0603, SMD