Datasheet

EVAL-ADP2105
Rev. 0 | Page 8 of 12
Table 2. Bill of Materials for ADP2105-EVAL with V
OUT
Set to 2.5 V
Description
Reference
Designator
Reference
Name
1
Qty. Manufacturer Part Number
Capacitor, MLCC, 4.7 μF, 10 V,
0805, X5R, SMD
C1, C2 C
IN1
, C
IN2
2 Murata GRM21BR61A475KA73L
Capacitor, MLCC, 22 μF, 6.3 V,
0805, X5R, SMD
C3 C
OUT
1 Murata GRM21BR60J226ME39L
Capacitor, MLCC, 10 μF, 10 V,
0805, X5R, SMD
C4 C
OUT
1 Murata GRM21BR61A106KE19L
Capacitor, MLCC, 1 nF, 16 V,
0603, X7R, SMD
C5 C
SS
1
Vishay Vitramon or
equivalent
VJ0603Y102KXJA
Capacitor, MLCC, 39 pF, 50 V,
0603, NPO
C6 C
COMP
1
Vishay Vitramon or
equivalent
VJ0603Y390KXJA
Capacitor, MLCC, 0.1 μF, 25 V,
0603, X7R, SMD
C7
IN (filter
capacitor)
1
Vishay Vitramon or
equivalent
VJ0603Y104KXXA
Resistor, 274 kΩ, 1%, 0603, SMD R1 R
COMP
1 Vishay Dale or equivalent CRCW06032743FRT1
Resistor, 100 kΩ, 1%, 0603, SMD R2
EN (pull
down)
1 Vishay Dale or equivalent CRCW06031003FRT1
Resistor, 10 Ω, 1%, 0603, SMD R3
IN (filter
resistor)
1 Vishay Dale or equivalent CRCW060310R0FRT1
Resistor, 87.6 kΩ, 0.5%, 0603,
SMD
R4 R
TOP
1 Vishay Dale or equivalent TNPW060387K6DHTA
Resistor, 41.2 kΩ, 0.1%, 0603,
SMD
R5 R
BOT
1 Vishay Dale or equivalent TNPW060341K2BEEN
Inductor 3.3 μH, 3.9 mm ×
3.9 mm x 1.1 mm
L1 L 1
Coilcraft, Toko,
Cooper Bussmann
LLPS4012-332MLB 1098AS-
DE2812C-3.3uH
SD3814-3.3uH
1 A Step-Down DC-to-DC
Converter with Adjustable
Output
U1 1 Analog Devices ADP2105-ADJ
Headers, 0.100, Single, Straight
V
OUT
, V
IN
, GND,
GND, J1, EN
6
Sullins Electronics or
equivalent
S1012-36-ND PTC36SAAN
1
Refer to the Typical Applications Circuit for Adjustable Output Voltage Options figure in the ADP2105 data sheet.
OUTPUT VOLTAGE: 2.5V
R5
41.2kΩ
FB
FB
V
IN
V
CC
06312-003
C2
4.7µF
R1
274kΩ
C6
39pF
L1
3.3µH
C4
10µF
C3
22µF
C1
4.7µF
V
OUT
C5
1nF
2
GND
INPUT VOLTAGE: 2.7V TO 5.5V
R3
10Ω
V
IN
GND
SS
LX2
AGND PADDLECOMP
PGND
NC
PWIN1IN1GND4
LX1
PWIN2
12
11
10
9
16 15 14 13
5 6 7 17 8
EN
GND3
GND2
GND1
V
CC
R2
100kΩ
EN
J1
NC = NO CONNECT
1
U1
ADP2105-ADJ
R4
87.6kΩ
C7
0.1µF
1
2
3
4
FB
Figure 10. Evaluation Board Schematic for ADP2105-EVAL with Adjustable V
OUT
Initially Set to 2.5 V