部品番号
HM4074
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Shenzhen Huazhimei Semiconductor Co., Ltd
HM4074 データシート - Shenzhen Huazhimei Semiconductor Co., Ltd
Shenzhen Huazhimei Semiconductor Co., Ltd
Overview:
HM4074 is a PWM step-down mode single-cell lithium iron phosphate battery charge management integrated circuit that can be powered by solar panels. It independently manages the charging of a single lithium iron phosphate battery. It has a small package size, few peripheral components and is simple to use. advantage.
Features:
● Solar panel maximum power point tracking function
● Wide input voltage range: 4.5V to 28V
● Complete charging management of single-cell lithium iron phosphate battery
● Charging current up to 4A
● PWM switching frequency: 300KHz
● Constant charging voltage: 3.625V± 40mV
● Constant charging current is set by external resistor
● Trickle charge a deeply discharged battery
● Auto recharge function
● Charging status and charging end status indication
● Soft start function
● Battery terminal overvoltage protection
● Working environment temperature: - 40℃ to + 85℃
● Available in 10-pin SSOP package
● The product is lead-free, meets Rohs, and does not contain halogen
Application:
● Handheld devices
● Emergency lighting
● Backup battery application
● Portable industrial and medical instruments
● Power tools
● Independent battery charger
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