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参数资料
| 型号： | L6924U |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, QCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, VFQFP-16 |
| 文件页数： | 33/38页 |
| 文件大小： | 598K |
| 代理商： | L6924U |
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Device description
L6924U
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Device description
The L6924U is a fully monolithic battery charger that safely charges single-cell
Li-Ion/Polymer battery from either USB power source or AC adapter. In USB mode, the
L6924U supports both low power and high power mode. Alternatively the device can charge
from AC wall adapter.
The ideal solution for space-limited portable products is produced in BCD6 technology and
integrates the power MOSFET, reverse blocking diode, sense resistor and thermal
protection into a compact VFQFPN16 package. When an external voltage regulated adapter
or USB port is used, the L6924U works in linear mode, and charges the battery in a
constant current constant voltage (CC/CV) profile. Moreover, when a current-limited adapter
is used, the device can operate in quasi-pulse mode, dramatically reducing the power
dissipation. Regardless of the charging approach, a closed loop thermal control avoids
device overheating. The device has an operating input voltage ranging from 2.5 V to 12 V
and it allows the user to program many parameters, such as fast-charge current, end-of-
charge current threshold, and charge timer. The L6924U offers two open collector outputs
for diagnostic purposes, which can be used to either drive two external LEDs or
communicate with a host microcontroller. Finally, the L6924U also provides other features
like gas gauge function, check for battery presence, and monitoring and protecting the
battery from unsafe thermal conditions.
Figure 2.
Basis application schematic
Figure 1.
Minimum size application board
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6924U013TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer |
| L6924UTR | 功能描述:电池管理 Battery Charger USB Compatible RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| L6925 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925013TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925D | 功能描述:直流/直流开关调节器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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