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參數資料
| 型號： | L6924U013 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, VFQFPN-16 |
| 文件頁數： | 32/37頁 |
| 文件大?。?/td> | 789K |
| 代理商： | L6924U013 |
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Description
L6924U
4/37
Doc ID 14716 Rev 2
1
Description
The L6924U is a fully monolithic battery charger that safely charges single-cell Li-
Ion/Polymer battery from either an USB power source or an AC adapter. In USB mode, the
L6924U supports both low power and high power mode. Alternatively the device can charge
from an AC wall adapter. The ideal solution for space-limited portable products 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 monitors and protects the battery from unsafe
thermal conditions.
Figure 2.
Basic application schematic
Figure 1.
Minimum size application board
相關PDF資料 |
PDF描述 |
|---|---|
| L6924U013TR | POWER SUPPLY SUPPORT CKT, PQCC16 |
| L6924U | POWER SUPPLY SUPPORT CKT, QCC16 |
| L6926D1013TR | 1.65 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO8 |
| L6996D | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24 |
| L9524C-TR | SPECIALTY ANALOG CIRCUIT, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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/直流開關調節(jié)器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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