Datasheet > HM4055DDR

HM4055DDR

更新时间： 2024-11-11 02:51:43

品牌	Logo	应用领域
华之美 - HMSEMI		电池
页数	文件大小	规格书
16页	1147K
描述
9V Input Voltage Battery Linear Charger

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中文翻译

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数据手册

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HM4055DDR 数据手册

HM4055A

800mALithium Ion, 9V Input Voltage Battery Linear Charger HM4055A Series

General Description

Features

HM4055A is a complete constant-current/constant

voltage linear charger for single cell lithium-ion batteries.

Furthermore the HM4055A is specifically designed to

work within USB power specifications.



Maximum operating voltage 9V, improve system

reliability



Protection of battery cell reverse connection

No MOSFET sense resistor or blocking diode

required

No external sense resistor is needed and no

blocking diode is required due to the internal PMOSFET

architecture .Thermal feedback regulates the charge

current to limit the die temperature during high power

operation or high ambient temperature .The charge

voltage is fixed at 4.2V,and the charge current can be

programmed externally with a single resistor. The

HM4055A automatically terminates the charge cycle



Complete Linear Charger in ThinSOT Package for

Single Cell Lithium-Ion Batteries

Constant-Current/Constant-Voltage operation with

thermal regulation to maximize Rate Without risk of

overheating.



Preset 4.2V 、 4.34V charge voltage with ±1%

accuracy

when the charge current drops to 1/10^th

the



Automatic Recharge

programmed value after the final float voltage is

reached.

Charges Single Cell Li-Ion Batteries Directly from

USB Port

When the input supply (wall adapter or USB supply)

is removed the HM4055A automatically enters a low

current state dropping the battery drain current to less

than 2μA.The HM4055A can be put into shutdown

mode reducing the supply current to 55μA.



C/10 charge termination

55μA supply current in shutdown

2.9V trickle current charge threshold

Soft-Start limits inrush current

Charge Status Output Pin

Other features include charge current monitor,

undervoltage lockout, automatic recharge and a status.

Typical Application

Package



Cellular Telephones, PDAs, MP3 Players

Charging Docks and Cradles

Bluetooth Applications



5 - pin SOT23-5

6 - pin DFN2*2-6

Page 1

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中文翻译

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