Datasheet

ADP2442 Data Sheet
Rev. 0 | Page 26 of 36
TYPICAL APPLICATION CIRCUITS
DESIGN EXAMPLE
Figure 63. Typical Application Circuit, V
IN
= 24 V ± 10%, V
OUT
= 5 V, f
SW
= 700 kHz
Table 14. Calculated Component Values for Figure 63
Quantity Reference 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 10 nF Capacitor ceramic, 10 nF, 50 V, 10%, X7R, 603 ECJ-1VB1H103K
1 C7 22 µF Capacitor ceramic, 22 µF, 25 V, X7R, 1210 GRM32ER71E226K
1 C8 10 µF Capacitor ceramic, 10 µF, 25 V, X7R, 1210 GRM32DR71E106KA12L
1 L1 18.3 µH Inductor CoilCraft MSS1260T-183NLB
1 C6 0.1 µF Capacitor ceramic, 0.1 µF, 50 V, X7R, 0805 ECJ-2FB1H104K
1 C10 185 pF Capacitor ceramic, 50 V Determined by user
1 R9 132 kΩ Resistor, 1/10 W, 1%, 0603, SMD Determined by user
1 R5 118 kΩ Resistor, 1/10 W, 1%, 0603, SMD Determined by user
1 R2 74 kΩ Resistor, 1/10 W, 1%, 0603, SMD Determined by user
2 R3 10 kΩ Resistor, 1/10 W, 1%, 0603, SMD Determined by user
1 R7 50 kΩ Resistor, 1/10 W, 1%, 0603, SMD Determined by user
V
IN
:
24V
FB
COMP
EN
PGOOD
FREQ
SYNC/ MODE
PGND
VIN
SW
BST
AGND
VCC
ADP2442
V
OUT
:
5V, 1A
C3
1µF/25V
C4
1µF/25V
L1
18.3µH
R9
132kΩ
R7
50kΩ
VCC
PGOOD
R5
118kΩ
C6
0.1µF
C7
22µF/
25V
C2
4.7µF/
50V
C1
4.7µF/
50V
C5
10nF/50V
C10
185pF
R3
10kΩ
C8
10µF/
25V
R2
74kΩ
10667-164
CLOCK:
700k±30%
VCC