參數(shù)資料
型號： MC33349N-1
廠商： Motorola, Inc.
英文描述： LITHIUM BATTERY PROTECTION CIRCUIT FOR ONE CELL SMART BATTERY PACKS
中文描述： 鋰電池保護電路的一個單元智能型電池組
文件頁數(shù)： 5/8頁
文件大?。?/td> 109K
代理商： MC33349N-1
MC33349
5
MOTOROLA ANALOG IC DEVICE DATA
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VPin 2
≤
(VPin 6 + Vth(chg))
the charger. Q1 will remain in the off state as long as VPin 6 exceeds
VPin 2 by
≈
Vth(chg). The battery pack is available for discharging.
Discharge current limit is disabled.
Charge
Q1
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Cell Status
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Battery Pack Status
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Q2
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Discharge
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CELL CHARGING FAULT/RESET
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No current or voltage faults
battery pack is available for charging or discharging.
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Charge Voltage Limit Fault:
samples
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Charge MOSFET Q1 is latched off and the cell is disconnected from
the charging source. An internal current source pull–up is applied to
divider resistors R1 and R2 creating a hysteresis voltage of VH. The
battery pack is available for discharging. Discharge current limit
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On to Off
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On
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VPin 2 > Vth(dschg)
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Charge MOSFET Q1 will turn on when the voltage across the cell falls
sufficiently to overcome hysteresis voltage VH, or when a load is
applied to the battery pack.
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Off to On
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Charge Current Limit Reset:
VPin 6 – VPin 2 < Vth(chg)
The Sense Enable circuit will reset and turn on charge MOSFET Q1
when VPin 6 no longer exceeds VPin 2 by
≈
Vth(chg). This can be
accomplished by either disconnecting the charger from the battery
pack, or by connecting the battery pack to a load.
Off to On
On
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Discharge Current Limit Fault:
VPin 2
≥
(VPin 6 + Vth(dschg))
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current limit protection is disabled.
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connecting the battery pack to the charger.
Discharge MOSFET Q2 is latched off and the cell is disconnected from
the load. Q2 will remain in the off state as long as VPin 2 exceeds VPin 6
by
≈
Vth(dschg). The battery pack is available for charging. Charge
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On
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On to Off
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Discharge Current Limit Reset:
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≈
Vth(dschg). This can be
when VPin 2 no longer exceeds VPin 5 by
by connecting the battery pack to the charger.
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load, and the protection circuit enters a low current sleepmode state.
The battery pack is available for charging. Charge current limit
protection is disabled.
Discharge MOSFET Q2 is latched off, the cell is disconnected from the
On
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On to Off
Discharge Voltage Limit Reset:
The Sense Enable circuit will reset and turn on discharge MOSFET Q2
when VPin 6 exceeds VPin 2 by 0.6 V. This can be accomplished by
On
Off to On
Continuous Charge Voltage Limit
Comparator
VPin 4 = VPin 5 = Vcell < Vth(chg)
VPin 4 = VPin 5 = Vcell > Vth(chg)
This condition occurs if Pin 4 and Pin 5 are accidently shorted together
or purposely connected for rapid Charge Voltgae Limit Testing.
MOSFET Q1 On to Off is not delayed and no hysteresis is required for
reset.
On
Off
On
On
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FAULTY CELL
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Discharge Voltage Limit Fault:
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Vth(UV) before a sample is taken.
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This condition can happen if the cell is defective (<1.5 V) or if a
momentary discharge current causes the cell voltage to fall below
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Off
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Off
相關PDF資料
PDF描述
MC33349N-3R1 Lithium Battery Protection Circuit for One Cell Battery Packs
MC33349N-4R1 Lithium Battery Protection Circuit for One Cell Battery Packs
MC33349N-7R1 Lithium Battery Protection Circuit for One Cell Battery Packs
MC33349 Lithium Battery Protection Circuit for One Cell Battery Packs
MC33349N-10 LITHIUM BATTERY PROTECTION CIRCUIT FOR ONE CELL SMART BATTERY PACKS
相關代理商/技術參數(shù)
參數(shù)描述
MC33350SN-7T1 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC33351ADTB-001 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC33351DTB-001 制造商:ON Semiconductor 功能描述:
MC33362DW 功能描述:直流/直流開關調(diào)節(jié)器 ANA HI VOLT OFFLN SW REG RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MC33362DWG 功能描述:直流/直流開關調(diào)節(jié)器 ANA HI VOLT OFFLN SW REG RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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