- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97995 > L6924U013 (STMICROELECTRONICS) POWER SUPPLY SUPPORT CKT, PQCC16 PDF資料下載
參數(shù)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(shù)： | 10/37頁 |
| 文件大?。?/td> | 789K |
| 代理商： | L6924U013 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁
Applications information: charging process
L6924U
18/37
Doc ID 14716 Rev 2
The battery is considered deeply discharged when its voltage is lower than a threshold
(VPRETH), internally set to 3 V.
During the pre-charge phase, the current (IPRECH) has a default value equal to 10 % of the
fast-charge current.
A safety timer is also present. If the battery voltage does not rise over VPRETH within this
time, a fault is given (Chapter 7.7: Maximum charging time on page 21).
If at the beginning of the charge process, the battery voltage is higher than the VPRETH, the
pre-charge phase is skipped.
7.2
AC or USB mode
The L6924U can charge batteries from both an AC adapter and USB inputs.
The power supply type can be chosen by driving the MODE pin.
A low level sets the L6924U in AC mode. The fast charge current is determined by the
connected to IUSB.
On the other hand, a high level at the MODE pin sets the L6924U in USB mode. The fast
Figure 10.
MODE pin selection
7.3
Fast charge phase
When the battery voltage reaches the pre-charge voltage threshold (VPRETH), the L6924U
enters the fast-charge phase.
In this phase the device charges the battery with a constant current, whose value can be set
by external resistors connected to IAC pin (AC adapter mode selected) or to IUSB pin (USB
mode) with an accuracy of 7 %.
In AC adapter mode (MODE pin low), the resistor RAC can be calculated as:
I
AC
R
AC
L6924U
MODE
AC adapter mode
R
USB
I
AC
R
AC
L6924U
MODE
USB mode
R
USB
I
USB
V
IN
I
USB
Sets the fast charge current
I
AC
R
AC
L6924U
MODE
AC adapter mode
R
USB
I
AC
R
AC
L6924U
MODE
USB mode
R
USB
I
USB
V
IN
I
USB
Sets the fast charge current
相關(guān)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(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。