ADP5020ACPZ-R7 Analog Devices Inc, ADP5020ACPZ-R7 Datasheet - Page 24

• Manufacturer Part Number: ADP5020ACPZ-R7
• Description: IC REG LDO DUAL BUCK 20LFCSP
• Manufacturer: Analog Devices Inc

Specifications of ADP5020ACPZ-R7

• Design Resources: Powering AD9272 with ADP5020 Switching Regulator PMU for Increased Efficiency (CN0135)
• Applications: Handheld/Mobile Devices
• Current - Supply: 10mA
• Voltage - Supply: 2.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-LFCSP
• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 2
• No. Of Ldo Regulators: 1
• Digital Ic Case Style: LFCSP
• No. Of Pins: 20
• No. Of Regulated Outputs: 3
• Operating Temperature Range: -40°C To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP5020ACPZ-R7TR

ADP5020
PCB BOARD LAYOUT RECOMMENDATIONS
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EXTERNAL COMPONENT LIST
Table 19. Recommended External Components List
Reference
Designator
C1, C4
C1, C4
C2
C3
C5
C6
L1
L2
R1, R2
Place the input and output capacitors, C1, C2, C3, C4, and
C5, as close as possible to the respective ADP5020 pin, and
make the grounding connection to the ADP5020 ground
pins as short as possible.
Connect C3, C5, and C6 to the analog ground, and connect
C1, C2, and C4 to the power ground.
Place the L1 and L2 inductors as close as possible to the
respective output pins.
Description
10 μF, X5R, 6.3 V, ±20%
10 μF, X5R, 6.3 V, ±20%
4.7 μF, X5R, 6.3 V, ±10%
1.0 μF, X5R, 6.3 V, ±10%
0.1 μF, X5R, 10 V, ±10%
1.0 μF, X5R, 6.3 V, ±10%
2.2 μH, DCR = 0.13 Ω, IDC = 1 A
2.2 μH, DCR = 0.23 Ω, IDC = 0.53 A
10 kΩ, 1%, thick film resistor
Size
0603
0603
0603
0603
0402
0603
2.5 mm × 1.8 mm × 1.2 mm
2.0 mm × 1.2 mm × 1.0 mm
0402
Rev. 0 | Page 24 of 28
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The power and analog ground planes are recommended to
keep the noise low. Use one layer for power ground and one
layer for analog ground. Tie the power and analog grounds
at a single point.
Use wide traces to connect the inductor and the input and
output capacitors.
Add the L3 inductor and the C8 capacitor, if needed, to
improve the LDO noise rejection at the switching fre-
quency of the Buck 1 regulator (3 MHz) because the LDO
PSRR typically degrades at higher frequencies. If switching
noise is not an issue, remove the L3 inductor.
Proposed Vendor
Murata
Taiyo Yuden
Murata
Murata
Murata
Murata
Taiyo Yuden
Taiyo Yuden
KOA Speer Electronics
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