Datasheet
Evaluation Board User Guide UG-189
Rev. 0 | Page 9 of 12
ADP2303 SCHEMATIC AND BILL OF MATERIALS
09315-018
U1
ADP2303
NC
6
FB
5
PGOOD
4
VIN
2
EN
3
BST
1
GND
7
SW
8
EPAD
9
J2
VIN
1
2
1
2
C1
0.1µF
25V
L1
4.7µH
C3
47µF
6.3V
C2
47µF
NP
C5
10µF
25V
J4
GND
1
2
J8
PWG
1
J6
PWG
J5
EN
1
2
3
J1
VOUT
J3
GND
1
2
1
2
J7
SW
1
C4
47µF
6.3V
R3
31.6kΩ
1%
R5
10.2kΩ
1%
D1
SSB43L
30V, 4A
R2
10kΩ
1%
R4
1.8kΩ
1%
R1
100kΩ
1%
Figure 18. Evaluation Board Schematic for ADP2303
Table 2. Bill of Materials for ADP2303 Evaluation Board
Qty Reference Designator Part Number Type Description PCB Footprint Vendor
1 C1 GRM188R71E104KA01 Capacitor 0.1 μF, 25 V C0603 Murata
1 C2 Optional Capacitor Optional C1210 Murata
1 C3 GRM32ER60J476ME20 Capacitor 47 μF, 6.3 V C1210 Murata
1 C4 GRM32ER60J476ME20 Capacitor 47 μF, 6.3 V C1210 Murata
1 C5 GRM31CR61E106KA12 Capacitor 10 μF, 25 V C1206 Murata
1 D1 SSB43L Diode 30 V, 4 A SMB_SD Vishay Dale
1 L1 VLF10040-4R7N5R4 Inductor
L = 4.7 μH, I
RAT
= 5.4 A,
DCR = 12.7 mΩ
DS104LC TDK
1 R1 CRCW0603100KFKEA Resistor 100 kΩ, 1% R0603 Vishay Dale
1 R2 CRCW060310K0FKEA Resistor 10 kΩ, 1% R0603 Vishay Dale
1 R3 CRCW060331K6FKEA Resistor 31.6 kΩ, 1% R0603 Vishay Dale
1 R4 CRCW06031K80FKEA Resistor 1.8 kΩ, 1% R0603 Vishay Dale
1 R5 CRCW060310K2FKEA Resistor 10.2 kΩ, 1% R0603 Vishay Dale
1 U1 ADP2303 IC
3 A, 700 kHz nonsynchronous
step-down dc-dc switching
regulator
8-lead, SOIC with
exposed paddle
Analog
Devices
2 J6, J7 M20-9990245 Test point
2.54 mm pitch SIL vertical PC
tail pin header, 6.1 mm mating
pin height, tin
SIP1 Harwin
5 J1, J2, J3, J4, J8 M20-9990245 Connector
2.54 mm pitch SIL vertical PC
tail pin header, 6.1 mm mating
pin height, tin, 2-way
SIP2 Harwin
1 J5 M20-9990346 Jumper 0.1-inch header, 3-way SIP3 Harwin