參數(shù)資料
型號： TPS65011RGZT
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48
封裝： 7 X 7 MM, PLASTIC, QFN-48
文件頁數(shù)： 13/57頁
文件大?。?/td> 1414K
代理商： TPS65011RGZT
www.ti.com
+
Pack+
Pack–
TEMP
Battery Pack
V(HTF)
V(LTF)
LTF
HTF
TS
I(TS)
bqTINY II
NTC
+
Pack+
Pack–
TEMP
Battery Pack
LTF
HTF
TS
bqTINY II
RT1
RT2
NTC
V(HTF)
V(LTF)
I(TS)
Battery Preconditioning
Battery Charge Current
TPS65011
SLVS501A – FEBRUARY 2004 – REVISED JANUARY 2005
DETAILED DESCRIPTION (continued)
Figure 28. TS Pin Configuration
Figure 29. TS Pin Threshold
On power up, if the battery voltage is below the V(LOWV) threshold, the TPS65011 applies a precharge current,
I(PRECHG), to the battery. This feature revives deeply discharged cells. The charge current during this phase is one
tenth of the value in current regulation phase which is set with IO(out) = KSET × V(SET)/R(SET). The load current in
preconditioning phase must be lower than I(PRECHG) and must allow the battery voltage to rise above V(LOWV)
within t(Prechg). VBAT_A is the sense pin to the voltage comparator for the battery voltage. This allows a power-on
sense measurement if the VBAT_A and VBAT_B pins are connected together at the battery.
The TPS65011 activates a safety timer, t(PRECHG), during the conditioning phase. If V(LOWV) threshold is not
reached within the timer period, the TPS65011 turns off the charger and indicates the fault condition in the
CHGSTATUS register. In the case of a fault condition, the TPS65011 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 or via
the serial interface.
TPS65011 offers on-chip current regulation. When charging from an ac adapter, a resistor connected between
the ISET1 and AGND pins determines the charge rate. A maximum of 1-A charger current from the ac adapter is
allowed. When charging from a USB port either a 100-mA or 500-mA charge rate can be selected via the serial
interface, default is 100 mA maximum. Two bits are available in the CHGCONFIG register in the serial interface
to reduce the charge current in 25% steps. These only influence charging from the ac input and may be of use if
charging is often suspended due to excessive junction temperature in the TPS65011 (e.g., at high ac input
voltages) and low battery voltages.
20
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65012RGZR 功能描述:電池管理 Multi-Channel 1-cell Li-Ion 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
TPS65012RGZRG4 功能描述:電池管理 Multi-Channel 1-cell Li-Ion 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
TPS65012RGZT 功能描述:電池管理 Multi-Channel 1-cell Li-Ion 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
TPS65012RGZTG4 功能描述:電池管理 Multi-Channel 1-cell Li-Ion 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
TPS65013RGZR 功能描述:電池管理 Multi-Channel 1-cell Li-Ion 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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