MIC79050-4.2YM-TR屬于集成電路（IC）的電池充電器。由微芯科技股份有限公司制造生產(chǎn)的MIC79050-4.2YM-TR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)量來分類，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。

General Description

The MIC79050 is a simple single-cell lithium-ion battery

charger. It includes an on-chip pass transistor for high

precision charging. Featuring ultra-high precision

(±0.75 over the Li-ion battery charging temperature

range) and “zero” off-mode current, the MIC79050

provides a very simple, cost effective solution for

charging lithium-ion battery.

Other features of the MIC79050 include current-limit

and thermal shutdown protection. In the event the input

voltage to the charger is disconnected, the MIC79050

also provides minimal reverse-current and

reversed-battery protection.

The MIC79050 is a fixed 4.2V device and comes in the

thermally-enhanced MSOP-8, SOIC-8, and SOT-223

packages. The 8-lead versions also come equipped

with enable and feedback inputs. All versions are

specified over the temperature range of –40°C to+125°C.

特性 Features

? High-Accuracy Charge Voltage: ±0.75 over

–5°C to + 60°C (Li-ion charging temperature range)

? Zero Off-Mode Current

? 10 μA Reverse Leakage

? Ultra-Low 380 mV Dropout at 500 mA

? Wide Input Voltage Range

? Logic-Controlled Enable Input (8-Lead Devices Only)

? Thermal Shutdown and Current-Limit Protection

? Power MSOP-8, Power SOIC-8, and SOT-223 Packages

? Pulse Charging Capability

Applications

? Li-Ion Battery Charger

? Cellular Phones

? Palmtop Computers

? PDAs

? Self-Charging Battery Packs