Datasheet

Bill of Materials

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Route noise sensitive traces such as the voltage feedback path away from the inductor. This is done by

routing it on the bottom layer or by adding a grounded copper area between switching node and feedback

path. To reduce noisy traces between the power components, keep any digital lines away from this

section. Keep the Feedback node as small as possible so that the ground pin and ground traces will shield

it from the SW or buck output.

Use wide traces between the power components and for power connections to the DC-DC converter

circuit to reduce voltage errors caused by resistive losses.

For the sense lines, make sure to use a Kelvin contact connection.

10 Bill of Materials

Table 4. LM26480 Evaluation Board Bill of Materials

Reference Designator Value, Size, Tolerance Description Vendor/Type

C1, C6, C11,C14 1 µF, 16V, X7R, 0805 C2012X7R1C105K TDK

C5, C7, C2, C8 10 µF, 16V, X7R, 1206 C3216X7R1C106M TDK

C12, C13 0.47 µF, 25V, X7R, 0805 C2012X7R1E474K TDK

R1,R2 22 KΩ 1/10W MCR03EZPFX2202

1% 0603 SMD Rohm

R11, R13 0Ω 0603 SMD MCR03EZPJ000 Rohm

S1,S2 SMB Connector

131–1701–206 Emerson

L1,L2 2.2 µH @ 1sat 2A Coil inductor TaiyoYuden

NP04SZB 2R2N

WQFN package 4 × 4 mm WQFN-24 Power management IC Texas Instruments

package LM26480

AN-1800 Evaluation Kit for LM26480 - Dual DC/DC Buck Regulators with SNVA329D–March 2008–Revised April 2013

Dual Low-Noise Linear Regulators

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