Datasheet > FSP4054

FSP4054

更新时间： 2024-09-27 07:00:19

品牌	Logo	应用领域
FOSLINK		电池
页数	文件大小	规格书
15页	446K
描述
Standalone Linear Li-ion Battery Charger with Thermal Regulation

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中文翻译

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FSP4054 数据手册

Standalone Linear Li-ion Battery Charger with Thermal Regulation

FSP4054

FEATURES

GENERAL DESCRIPTION

Programmable charge current up to 800mA

No MOSFET, sense resistor or blocking diode

required

The

FSP4054

complete

constant-current/constant-voltage linear charger for

cell lithium-ion batteries. Its Thin SOT23-5L package

and low external component count make the FSP4054

ideally suited for portable applications. Furthermore,

the FSP4054 is specifically designed to work within

USB power specifications.

Complete linear charger in thin SOT package for

single cell lithium–ion batteries

Constant-current/constant-voltage operation with

thermal regulation to maximize charge rate

without risk of overheating

No external sense resistor is needed, and no blocking

diode is required due to the internal MOSFET

architecture. Thermal feedback regulators 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

FSP4054 automatically terminates the charge cycle

when the charge current drops to 1/10^ththe

programmed value after the final float voltage is

reached.

Charges single cell Li-ion batteries directly from

USB port

Preset 4.2V charge voltage with ±1% accuracy

Charge current monitor output for gas gauging

Automatic recharge

Charge status output pin

C/10 charge termination

25uA supply current in shutdown

2.9V trickle charge threshold

Soft-start limits inrush current

Space saving ThinSOT23-5L package

When the input supply (wall adapter or USB supply) is

removed, the FSP4054 automatically enters a low

current state, dropping the battery drain current to less

than 2uA. The FSP4054 can be put into shutdown

mode, reducing the supply current to 25uA.

APPLICATIONS

Cellular phones, PDAs

Bluetooth applications

Charging docks and Cradles

MP3 players

Other features include charge current monitor,

undervoltage lockout, automatic recharge and a status

pin to indicate charge termination and the presence of

an input voltage.

PIN CONFIGURATION

(Top View)

PIN DESCRIPTION

Pin Name

Pin Number

Pin Function

CHRG

GND

BAT

Open-drain charge status output

Ground

Charge current output

Vcc

Positive input supply voltage

PROG

Charge current program, Charge current monitor and shutdown pin

TYPICAL APPLICATIONS CIRCUITS

600mA single cell Li-ion charger

1/15

2007-7-3

12 3 4 5 6 7...15

中文翻译

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与FSP4054相关器件

型号	品牌	获取价格	描述	数据表
FSP4054TCAD	FOSLINK	获取价格	Standalone Linear Li-ion Battery Charger with Thermal Regulation
FSP431	FOSLINK	获取价格	ADJUSTABLE PRECISION SHUNT REGULATOR
FSP431C	FOSLINK	获取价格	ADJUSTABLE PRECISION SHUNT REGULATOR
FSP431CA	FOSLINK	获取价格	ADJUSTABLE PRECISION SHUNT REGULATOR
FSP431V	FOSLINK	获取价格	ADJUSTABLE PRECISION SHUNT REGULATOR
FSP431VA	FOSLINK	获取价格	ADJUSTABLE PRECISION SHUNT REGULATOR
FSP450-60EGN	SPI	获取价格	450 Watts ATX12V 2.3 Switching Power Supply
FSP450-60ETN	SPI	获取价格	450 Watts ATX12V V2.3 EPS12V V2.92 Swithcing Power Suuply
FSP460-601U	SPI	获取价格	460 Watts, ATX12V, EPS12V,1U Switching Power Supply
FSP460-60GHC	SPI	获取价格	460 Watts ATX12V Switching Power Supply

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