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參數(shù)資料
| 型號： | BQ24201DGNR |
| 英文描述： | Fast Recovery Bridge Rectifiers |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 201K |
| 代理商： | BQ24201DGNR |
SLUS501A
–
OCTOBER 2001
7
www.ti.com
APPLICATION INFORMATION
UDG
–
01109
TEMP
1
IN
2
VCC
3
STAT
4
VSS
8
OUT
7
BAT
6
TS
5
N/C
BATTERY
PACK
C2
RT2
RT1
VCC
PACK+
PACK
–
R1
C1
DC+
DC
–
bq24200DGN
+
Figure 5.
Low Dropout Single
–
Cell Li
–
Ion/Li
–
Pol Charger
functional description
The bq2420x supports a precision Li-Ion or Li-Pol charging system suitable for single-cells with either coke or
graphite anodes. Figure 5 shows an application schematic and Figure 6 shows the typical charge profile.
temperature qualification (bq24200 and bq24201 only)
The bq24200 and bq24201 continuously monitors battery temperature by measuring the voltage between the
TS and VSS pins. A negative- or a positive-temperature coefficient thermistor (NTC, PTC) and an external
voltage divider typically develop this voltage (see figure 5). The bq24200 and bq24201 compare this voltage
against the internal V
(TS1)
and V
(TS2)
thresholds to determine if charging is allowed (see Figure 7). The
temperature sensing circuit is immune to any fluctuation in Vcc since both the external voltage divider and the
internal thresholds are referenced to Vcc.
Once a temperature outside the V
(TS1)
and V
(TS2)
thresholds is detected the bq24200 and bq24201 immediately
suspend the charge. The bq24200 and bq24201 suspend the charge by turning off the powerFET and holding
the timer value (i.e. timers are NOT reset). Charge is resumed when the temperature returns to the normal
range.
P
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BQ24201DGNRG4 | 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 |
| BQ24202 | 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 |
| BQ24202DGN | 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 |
| BQ24202DGNG4 | 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 |
| BQ24202DGNR | 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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