LP6490-01

Jun.-2017

www.lowpowersemi.com

Page 1 of 6

Preliminary Datasheet

LP6490

30V 2.4A Synchronous Buck Converter

General Description

The LP6490 is a synchronous, rectified, step-down,

switch-mode converter with built-in power MOSFETs.

The LP6490 offers a very compact solution that

achieves a maximum of 2.4A of continuous output

current.

The LP6490 has synchronous mode operation for high

efficiency over the output current load range.

Current-mode operation provides fast transient

response and eases loop stabilization.

The LP6490 requires a minimum number of readily

available standard external components. Other

features include cable compensation, programmable

current limit and thermal shutdown.

Order Information

LP6490

F: Pb-Free

Package Type

SP: ESOP-8

Applications



Car Charger



Pre-Regulator for Linear Regulators



Distributed Power Systems



USB Dedicated Charging Ports (DCP)

Features



Wide 8V to 30V Continuous Operating Input

Range



MOSFETs



Up to 93% Efficiency



Default 180kHz Switching Frequency



Internal Soft Start



Output large Line Drop Compensation





Over-Current Protection (OCP) programmable

with External Resistor



No Loop Compensation Required



Thermal Shutdown



Available in ESOP8 Package

Typical Application Circuit

Marking Information

Device

Marking

Package

Shipping

LP6490

LPS

LP6490

YWX

ESOP8

4K/REEL

Marking indication:

Y:Production year W:Production week X:Production batch

LP6490

VIN

GND

CS

FB

SW

100uF

470uF

Option

Option

47uH

Rsen

25mΩ

Vout+

Vin

Vout-

Rup

39K

Rdn

5.1K