- BQ24155RGYR
- 参考价格:
- 发布者:凌晔科技
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详细信息
品牌:TI德州
封装:QFN14
批号:18+
数量*:470000
描述:The bq24155 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24155 integrates a synchronous PWM controller, power FETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24155 charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, bq24155 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C compatible interface.
During the charging process, the bq24155 monitors its junction temperature (TJ) and reduces the charge current once TJ increases to approximately 125°C. The bq24155 is available in 14-pin QFN package.
产品特性
Charge Faster than Linear Chargers
High-Accuracy Voltage and Current Regulation
Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C-125°C)
Charge Current Regulation Accuracy: ±5%
Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C-125°C)
Charge Current Regulation Accuracy: ±5%
High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
20-V Absolute Maximum Input Voltage Rating
6-V Maximum Operating Input Voltage
Built-In Input Current Sensing and Limiting
Integrated Power FETs for Up To 1.25-A Charge Rate
Programmable Charge Parameters through I2C Compatible Interface (up to 3.4 Mbps):
Input Current
Fast-Charge/Termination Current
Charge Voltage (3.5 V to 4.44 V)
Safety Timer with Reset Control
Termination Enable
Input Current
Fast-Charge/Termination Current
Charge Voltage (3.5 V to 4.44 V)
Safety Timer with Reset Control
Termination Enable
Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz with 0% to 99.5% Duty Cycle
Automatic High Impedance Mode for Low Power Consumption
Robust Protection
Reverse Leakage Protection Prevents Battery Drainage
Thermal Regulation and Protection
Input/Output Overvoltage Protection
Reverse Leakage Protection Prevents Battery Drainage
Thermal Regulation and Protection
Input/Output Overvoltage Protection
Status Output for Charging and Faults
USB Friendly Boot-Up Sequence
Automatic Charging
Power Up System without Battery
3.5 mm x 3.5 mm 14-Pin QFN Package
APPLICATIONS
Mobile and Smart Phones
MP3 Players
Handheld Devices
Mobile and Smart Phones
MP3 Players
Handheld Devices
深圳市凌晔科技有限公司
广东省深圳市福田区华强广场C座13L
TEL:13544017528
qq: 869030400
E-mail:869030400@qq.com
封装:QFN14
批号:18+
数量*:470000
描述:The bq24155 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24155 integrates a synchronous PWM controller, power FETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24155 charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, bq24155 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C compatible interface.
During the charging process, the bq24155 monitors its junction temperature (TJ) and reduces the charge current once TJ increases to approximately 125°C. The bq24155 is available in 14-pin QFN package.
产品特性
Charge Faster than Linear Chargers
High-Accuracy Voltage and Current Regulation
Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C-125°C)
Charge Current Regulation Accuracy: ±5%
Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C-125°C)
Charge Current Regulation Accuracy: ±5%
High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
20-V Absolute Maximum Input Voltage Rating
6-V Maximum Operating Input Voltage
Built-In Input Current Sensing and Limiting
Integrated Power FETs for Up To 1.25-A Charge Rate
Programmable Charge Parameters through I2C Compatible Interface (up to 3.4 Mbps):
Input Current
Fast-Charge/Termination Current
Charge Voltage (3.5 V to 4.44 V)
Safety Timer with Reset Control
Termination Enable
Input Current
Fast-Charge/Termination Current
Charge Voltage (3.5 V to 4.44 V)
Safety Timer with Reset Control
Termination Enable
Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz with 0% to 99.5% Duty Cycle
Automatic High Impedance Mode for Low Power Consumption
Robust Protection
Reverse Leakage Protection Prevents Battery Drainage
Thermal Regulation and Protection
Input/Output Overvoltage Protection
Reverse Leakage Protection Prevents Battery Drainage
Thermal Regulation and Protection
Input/Output Overvoltage Protection
Status Output for Charging and Faults
USB Friendly Boot-Up Sequence
Automatic Charging
Power Up System without Battery
3.5 mm x 3.5 mm 14-Pin QFN Package
APPLICATIONS
Mobile and Smart Phones
MP3 Players
Handheld Devices
Mobile and Smart Phones
MP3 Players
Handheld Devices
深圳市凌晔科技有限公司
广东省深圳市福田区华强广场C座13L
TEL:13544017528
qq: 869030400
E-mail:869030400@qq.com
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