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參數(shù)資料
| 型號： | BQ24203DGNR |
| 英文描述： | Fast Recovery Bridge Rectifiers |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 10/14頁 |
| 文件大小： | 201K |
| 代理商： | BQ24203DGNR |
SLUS501A
–
OCTOBER 2001
10
www.ti.com
APPLICATION INFORMATION
The resistor values of R
T1
and R
T2
are calculated by the following equations:
For NTC Thermistors:
R
T1
5
RT
H
RT
C
RT
C
RT
H
3
R
T2
5
RT
H
RT
C
2
RT
C
7
RT
H
For PTC Thermistors:
R
T1
5
RT
H
RT
H
RT
C
RT
C
3
R
T2
5
RT
H
RT
C
2
RT
H
7
RT
C
Where RT
C
is the cold temperature resistance and RT
H
is the hot temperature resistance of thermistor, as
specified by the thermistor manufacturer.
R
T1
or R
T2
can be omitted If only one temperature (hot or cold) setting is required. Applying a voltage between
the V
TS1
and V
TS2
thresholds to pin TS disables the temperature-sensing feature. Also applying a voltage
between (V
CC
–
0.3 V) and Vcc suspends the charge and places the IC in the low-power standby mode.
battery pre-conditioning
Figure 7 shows the operational flow chart for the bq2420x.
Upon power-up, if the battery voltage is below the V
(LOWV)
threshold, the bq2420x applies a pre-charge current,
I
(PRECHG)
, to the battery. This feature revives deeply discharged cells. The bq2420x activates a safety timer,
t
(PRECHG)
, during the conditioning phase. If V
(LOWV)
threshold is not reached within the timer period, the
bq2420x turns off the charger and enunciates FAULT on the STAT pin. In the case of a FAULT condition, the
bq2420x reduces the current to I
(DETECT)
. I
(DETECT)
is used to detect a battery replacement condition. Fault
condition is cleared by POR or battery replacement.
P
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| BQ24204DGNR | Fast Recovery Bridge Rectifiers |
| BQ24205DGNR | Fast Recovery Bridge Rectifiers |
| BQ24901 | Fast Recovery Bridge Rectifiers |
| BQ2902PN-N | Battery Management |
| BQ2902SN-N | Battery Management |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ24203DGNRG4 | 功能描述:電池管理 Single-Chip Li-Ion Charger 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 |
| BQ24204 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SINGLE CHIP U-I ONAND LI-POL CHARGE MANAGEMENT IC FOR CURRENT LIMITED APPLICATIONS |
| BQ24204DGN | 功能描述:電池管理 Single-Chip Li-Ion Charger 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 |
| BQ24204DGNG4 | 功能描述:電池管理 Single-Chip Li-Ion Charger 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 |
| BQ24204DGNR | 功能描述:電池管理 Single-Chip Li-Ion Charger 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 |
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