ADP2107-EVALZ Analog Devices Inc, ADP2107-EVALZ Datasheet - Page 28

• Manufacturer Part Number: ADP2107-EVALZ
• Description: BOARD EVALUATION FOR ADP2107
• Manufacturer: Analog Devices Inc

Specifications of ADP2107-EVALZ

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 2.5V
• Current - Output: 2A
• Voltage - Input: 2.7 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 1.2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: ADP2107
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ADP2105/ADP2106/ADP2107
EVALUATION BOARD
EVALUATION BOARD SCHEMATIC FOR ADP210
RECOMMENDED PCB LAYOUT (EVALUATION BOAR
ADP2105/ADP2106/ADP2107
PLACE THE COMPENSATION
COMPONENTS AS CLOSE TO
THE COMP PIN AS POSSIBLE.
CONNECT THE GROUND RETURN OF ALL
SENSITIVE ANALOG CIRCUITRY SUCH AS
COMPENSATION AND OUTPUT VOLTAGE
DIVIDER TO THE ANALOG GROUND PLANE.
EN
100kΩ
PLACE THE FEEDBACK RESISTORS AS
R2
VCC
CLOSE TO THE FB PIN AS POSSIBLE.
ENABLE
J1
Figure 53. Evaluation Board Schematic of t he A
100kΩ PULL-DOWN
140kΩ
Figure 54. Recommended Layout of Top Layer of ADP2105/ADP2106/ADP2107
68pF
C6
1
2
3
4
ANALOG GROUND PLANE
U1
R1
JUMPER TO ENABLE
COMP
C
EN
GND
GND
GND
COMP
5
R
OUT
COMP
FB
16
SS AGND
R
ADP2107-1.8
TOP
6
15
GND
C5
1nF
R
0.1µF
BOT
C7
7
INPUT CAPACITOR
IN
14
PADDLE
C
NC = NO CONNECT
SS
10Ω
R3
INPUT CAPACITOR
PWIN1
PWIN
INPUT
PGND
13
V
LX2
LX1
IN
7
Rev. C | Page 28 of 36
NC
VCC
2
8
(1.8 V)
POWER GROUND
12
11
10
9
C
C
PGND
10µF
D
IN
IN
LX
LX
C1
VCC
LAYOUT)
INPUT VOLTAGE = 2.7V TO 5.5V
DP2107-1.8 (Bold Traces are High Current Paths)
1
POWER GROUND
C2
10µF
INDUCTOR (L)
PLANE
C
1
C
OUT
OUT
1
2
GROUND
O
MURATA X5R 0805
10μF: GRM21BR61A106KE19L
22μF: GRM21BR60J226ME39L
2μH INDUCTOR D62LCB TOKO
1
UT
L1
2µH
VIN
GND
2
2
CONNECT THE GROUND RETURN OF
ALL POWER COMPONENTS SUCH AS
INPUT AND OUTPUT CAPACITORS TO
THE POWER GROUND PLANE.
0Ω
NS
R4
R5
OUTPUT CAPACITOR
OUTPUT CAPACITOR
OUTPUT VOLTAGE = 1.8V, 2A
22µF
C3
1
OUTPUT
GROUND
V
OUT
C4
22µF
1
V
GND
OUT