ADP1883 Analog Devices, ADP1883 Datasheet - Page 34
ADP1883
Manufacturer Part Number
ADP1883
Description
Synchronous Current-Mode Buck Controller with Constant On-time, 0.8 V Reference Voltage, and Power Saving Mode
Manufacturer
Analog Devices
Datasheet
1.ADP1882.pdf
(40 pages)
- Current page: 34 of 40
- Download datasheet (2Mb)
ADP1882/ADP1883
SEPARATE ANALOG GROUND
PLANE FOR THE ANALOG
COMPONENTS (THAT IS,
COMPENSATION AND
FEEDBACK RESISTORS).
BYPASS POWER CAPACITOR (C1)
FOR VDD BIAS DECOUPLING AND
HIGH FREQUENCY CAPACITOR
(C2) AS CLOSE AS POSSIBLE TO
THE IC.
SENSITIVE ANALOG
COMPONENTS
LOCATED FAR
FROM THE NOISY
POWER SECTION.
Figure 84. Overall Layout of the ADP1882 High Current Evaluation Board
INPUT CAPACITORS
ARE MOUNTED CLOSE
TO DRAIN OF Q1/Q2
AND SOURCE OF Q3/Q4.
Figure 85. Layer 2 of Evaluation Board
Rev. 0 | Page 34 of 40
OUTPUT CAPACITORS
ARE MOUNTED ON THE
RIGHTMOST AREA OF
THE EVB, WRAPPING
BACK AROUND TO THE
MAIN POWER GROUND
PLANE, WHERE IT MEETS
WITH THE NEGATIVE
TERMINALS OF THE
INPUT CAPACITORS.
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