LP6498SOF datasheet(7/9 Pages) POWER

7 / 9 page

LP6498-00

Mar.-2018

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

Page 7 of 9

Preliminary Datasheet

LP6498

Operation Information

Functional Description

The LP6498 is a switch-mode step-down DC-DC converter.

The device operates at a fixed 600KHz switching frequency,

and uses a slope compensated current mode architecture.

This step-down DC-DC converter can supply up to 1.2A

output current at input voltage range from 8V to 30V. It

minimizes external component size and optimizes efficiency

at the heavy load range. The integrated slope compensation

allows the device to remain stable over a wider range of

inductor values so that smaller values (6.8μH to 22μH) with

lower DCR can be used to achieve higher efficiency.

Layout Guidance

When laying out the PCB board, the following layout guideline

should be followed to ensure proper operation of the LP6498:

1. The power traces, including the GND trace, the SW trace

and the IN trace should be kept short, direct and wide to allow

large current flow. The L connection to the SW pins should be

as short as possible. Use several VIN pads when routing

between layers.

2. The input capacitor (CIN) should connect as closely as

possible to VIN and GND to get good power filtering.

LP6498SOF Folha de dados(PDF) 7 Page - Lowpower Semiconductor inc