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參數(shù)資料
| 型號(hào)： | L6924U |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, QCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, VFQFP-16 |
| 文件頁(yè)數(shù)： | 33/38頁(yè) |
| 文件大?。?/td> | 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6924U013TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer |
| L6924UTR | 功能描述:電池管理 Battery Charger USB Compatible RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| L6925 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925013TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925D | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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