參數(shù)資料
型號(hào)： L6924D013TR
廠商： STMICROELECTRONICS
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16
封裝： 3 X 3 MM, VFQFPN-16
文件頁(yè)數(shù)： 13/38頁(yè)
文件大?。?/td> 1454K
代理商： L6924D013TR
Applications information: charging process
L6924D
20/38
Doc ID 11908 Rev 9
7.6
Recharge flow chart
Figure 15.
Recharge flow chart
7.7
Recharge threshold
When, from an end-of-charge condition, the battery voltage goes lower than the recharging
threshold (VRCH), the device goes back in charging state. The value of the recharge
threshold is VOPRG–150 mV.
7.8
Maximum charging time
To avoid the charging of a dead battery for a long time, the L6924D has the possibility to set
a maximum charging time starting from the beginning of the fast-charge phase. This timer
can be set with a capacitor, connected between the TPRG pin and GND. The CTPRG is the
external capacitor (in nF) and is given by the following equation:
Equation 11
Note:
The maximum recommended CTPRG value must be less than 50 nF.
END of CHARGE
VBAT
>
VRCH
Detect Low
VBAT
>
VPRETH
FAST CHARGE
Detect High
VBAT
>
VRCH
BATTERY
ABSENT
PRE CHARGE
FAULT
IND FAULT
VBAT
>
VRCH
Detect High Fault
VBAT
<
VABS
Detect Low Fault
VBAT
>
VPRETH
BATTERY
ABSENT
YES
NO
YES
NO
YES
NO
YES
DETECT LOW = a ISINK is sunk for a TDET from the battery
DETECT HIGH = a IINJ is injected for a TDET in the battery
DETECT LOW FAULT = a ISINK is sunk for a TDET from the battery
DETECT HIGH FAULT = a IINJ is injected for a TDET in the battery
VABS = VOPRG – 50mV
VRCH = VOPRG – 150mV
TDET = 100ms (Typ.)
ISINK = IINJ = 1mA (Typ.)
RETURN TO CHARGING PROCESS
FLOW CHART
GO TO BATTERY ABSENT
FLOW CHART
FROM CHARGING PROCESS FLOW CHART
9
10
×
×
=
REF
PRG
BG
T
MAXCH
TPRG
V
R
V
K
T
C
相關(guān)PDF資料
PDF描述
L6926D 1.4 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
L6926Q1TR 1.65 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO8
L6926Q1 1.65 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO8
L6928D 1.65 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO8
L6928TR 1.65 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6924U 功能描述:電池管理 USB Battery Charger System w/integra 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
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
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