Part Name
HM4082
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MFG CO.
Shenzhen Huazhimei Semiconductor Co., Ltd
HM4082 Datasheet - Shenzhen Huazhimei Semiconductor Co., Ltd
Shenzhen Huazhimei Semiconductor Co., Ltd
Overview
HM4082 is a linear lithium-ion/lithium polymer battery charging chip with a minimum input voltage as low as 3.6 volts and a maximum charging current of 800mA. HM4082 can be programmed to adapt to various AC adapters and USB interfaces. Battery charging is divided into constant current (CC/Constant Current) and constant voltage (CV/Constant Voltage) processes. The constant current charging current is determined by an external resistor, with a maximum of 800mA. When considering the heating problem, you can use an AC adapter with current-limiting output. Using HM4082 can take into account the advantages of linear charger and switch-type charging: fast charging and low self-consumption power.
Features
● Complete single/two-cell lithium-ion/lithium polymer battery charging chip
● Intelligent battery detection
● 0.8% charging voltage accuracy
● The constant voltage charging voltage value can be fine-tuned through an external resistor
● Extremely low heat consumption
● Integrated MOSFET, built-in current detection
● No need for external reverse phase protection diode
● Programmable charging current control, up to 800mA
● Chip temperature thermal foldback protection
● NTC thermal interface monitors battery temperature
● LED charging status indication
● Can be configured to charge single or dual-cell lithium batteries
● Short circuit detection and protection
● USB and AC adapter voltage input selectable
● Working environment temperature range: -30℃～70℃
● Small TSSOP-16 package
Application
● Handheld devices, including medical handheld devices
● PDAs, mobile cellular phones and smartphones
● Mobile instruments, MP3
● Self-charging battery pack
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