LP28300 データシートの表示（PDF） - Unspecified

部品番号

コンポーネント説明

メーカー

LP28300

2A Synchronous Buck Li-ion Charger

Unspecified 

Preliminary Datasheet

LP28300

2A Synchronous Buck Li-ion Charger

General Description

The LP28300 is a 2A Li-Ion battery charger intended for5V

wall adapters. It utilizes a 1.5MHz synchronous buck

converter topology to reduce power dissipation during

charging. Low power dissipation, an internal MOSFET

allow a physically small charger that can be embedded in a

wide range of handheld applications. The LP28300 includes

complete charge termination circuitry, automatic recharge

and a ±1% 4.2V float voltage. Input short-circuit protection

is included so no blocking diode is required.

Battery charge current, charge timeout and end-of-charge

indication parameters are set with external components.

Additional features include shorted cell detection,

temperature qualified charging and overvoltage protection.

The LP28300 is available in a low profile (0.75mm)

10-lead(3mm × 3mm) DFN package.

Features

¾ Very Low Power Dissipation

¾ 2A Maximum Charge Current

¾ No External MOSFETs and Blocking Diode Required

¾ Constant-Current/Constant-Voltage Operation with

Thermal Regulation to Maximize Charge Rate

Without Risk of Overheating

¾ Charges Single Cell Li-Ion Batteries Directly from

USB Port

¾ Drainage Charge Current Thermal Regulation Status

Outputs for LED or System Interface

¾ Optional Battery Temperature Monitoring Before and

During Charge Automatic Sleep Mode for Low-Power

¾ Consumption Available in 3mm × 3mm TDFN-10

Package

¾ RoHS Compliant and 100% Lead (Pb)-Free

Order Information

LP28300 - □ □ □

F: Pb-Free

Package Type

QV: TDFN-10

Applications

— Portable Media Players

— Cellular and Smart mobile phone

— PDA/DSC

— Handheld Battery-Powered Devices

— Handheld Computers

— Charging Docks and Cradles

Typical Application Circuit

Marking Information

Please see website.

LP28300 – 01 Version 1.1 Datasheet

Sep.-2010

www.lowpowersemi.com

Page 1 of 10

Share Link: