STC4054集成電路（IC）的電池充電器規(guī)格書(shū)PDF中文資料

STC4054屬于集成電路（IC）的電池充電器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的STC4054電池充電器電池充電器 PMIC（電源管理集成電路）是元器件級(jí)產(chǎn)品系列，用于在電子設(shè)備中實(shí)現(xiàn)電池充電控制和充電管理功能。這些器件主要根據(jù)電池化學(xué)及其設(shè)計(jì)用于的電池?cái)?shù)量來(lái)分類(lèi)，可提供電化學(xué)電池和超級(jí)電容器安全充電所必需的電流或電壓調(diào)節(jié)和監(jiān)視功能。

Description

The STC4054 is a constant current/constant voltage charger for single cell Li-Ion batteries. No external sense resistor or blocking diode is required and its ThinSOT package make it ideally suited for portable applications. The STC4054 is designed to work within USB power specifications. An internal block regulates the current when the junction temperature increases, in order to protect the device when it operates in high power or high ambient temperature.

The charge voltage is fixed at 4.2V, and the charge current limitation can be programmed using a single resistor connectd between PROG pin and GND. The charge cycle is automatically terminated when the current flowing to the battery is 1/10 of the programmed value. If the external adaptor is removed, the STC4054 turns off and a 2μA current can flow from the battery to the device. The device can be put into Shutdown Mode, reducing the supply current to 25μA. The device also has a charge current monitor, under voltage lockout, automatic recharge. The device is packaged in TSOT23-5L.

Feature summary

■ Programmable charge current up to 800mA

■ No external MOSFET, sense resistors or blocking diode required

■ Constant current / constant voltage operation

with thermal regulation to maximize charge

rate without risk of overheating

■ Charges single cell li-ion batteries directly from USB port

■ Preset 4.2V charge voltage with 1 accuracy

■ Automatic recharge

■ Single charge status output pin

■ Charge current monitor output for gas gauging

■ C/10 Charge termination

■ 25μA supply current in shutdown mode

■ Low battery voltage detect for precharge setting

■ Soft-start limits inrush current

■ TSOT23-5L package

Applications

■ Cellular telephones

■ PDAs

■ Bluetooth applications

■ Battery-powered devices