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參數(shù)資料
| 型號(hào)： | LTC4071EMS8E#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 18/18頁 |
| 文件大?。?/td> | 219K |
| 代理商： | LTC4071EMS8E#TRPBF |
LTC4071
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4071fb
operaTion
Low Battery Disconnect/Connect: LBD/LBC
Thelowbatterydisconnect(VLBD)andconnect(VLBC)volt-
age levels are programmed by the LBSEL pin. As shown
in the Block Diagram the battery disconnects from VCC by
shutting off MP1 when the BAT voltage falls below VLBD.
This disconnect function protects Li-Ion batteries from
permanent damage due to deep discharge. If the voltage
of a Li-Ion cell drops below a certain level, the cell may be
permanentlydamaged.DisconnectingthebatteryfromVCC
prevents the load at VCC as well as the LTC4071 quiescent
current from further discharging the battery.
Once disconnected the VCC voltage collapses towards
ground. When an input supply is reconnected the bat-
tery charges through the internal body diode of MP1.
The input supply voltage should be larger than VLBC_VCC
to ensure that MP1 is turned on. When the VCC voltage
reaches VLBC_VCC, MP1 turns on and connects VCC and
BAT. While disconnected, the BAT pin voltage is indirectly
sensed through MP1’s body diode. Therefore VLBC varies
with charge current and junction temperature. Please see
the Typical Performance Characteristics section for more
information.
Low Battery Select: LBSEL
The low battery discharge cutoff voltage level is pro-
grammed by the LBSEL pin.
The LBSEL pin allows the user to trade-off battery run-
time and maximum shelf life. A lower battery disconnect
threshold maximizes run time by allowing the battery to
fully discharge before the disconnect event. Conversely,
by increasing the low battery disconnect threshold more
capacity remains following the disconnect event which
extends the shelf life of the battery. For maximum run
time, tie LBSEL to VCC so that the battery disconnects at
VCC = 2.7V. For extended shelf life, tie LBSEL to GND so
that the battery disconnects at VCC = 3.2V. If a high peak
currenteventisexpected,usersmaytemporarilyselectthe
lowerdisconnectthreshold.Thisavoidsdisconnectingthe
battery too early when the load works against the battery
series resistance and temporarily reduces VCC.
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PDF描述 |
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| LTC4071EDDB#TRMPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4071IMS8E#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4071IDDB#TRMPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4071EDDB#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4071IDDB | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect |
| LTC4071IDDB#PBF | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion/Li-Polymer 50mA 8-Pin DFN EP |
| LTC4071IDDB#TRPBF | 功能描述:IC LI-ION/POLY BATT CHRGR 8-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC4071IMS8E | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect |
| LTC4071IMS8E#PBF | 功能描述:IC LI-ION/POLY BATT CHRGR 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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