LM3641M中文資料美國國家半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書
LM3641M規(guī)格書詳情
General Description
The LM3641 Lithium Protection Integrated Circuit resides inside a 3.6V Lithium-Ion battery pack consisting of a single
cell or multiple parallel cells. The IC controls the ON/OFF
state of a pair of low threshold N-channel power MOSFETs
placed in series with the battery cell(s). The purpose of this
MOSFET pair is to protect the cell(s) from inadvertent electrical over-stress. The IC compares the cell voltage against
internally programmed minimum and maximum limits. Transient voltage faults of approximately 1.25 seconds are tolerated.
The IC also monitors the bi-directional current flow in the battery pack by measuring the voltage across a robust 4 m?
current sensing resistor internal to the protection IC package. The IC turns OFF the MOSFET pair whenever any fault
limit is exceeded. Momentary current surges <4 ms are tolerated.
The Enable pin allows external ON/OFF control of the MOSFET pair and resets the IC after the MOSFET pair is turned
OFF and the pack is safe to operate again.
The limits for overcharge and overdischarge voltage, as well
as independent limits for each direction of overcurrent are
factory adjusted employing EEPROM.
Features
- Automatic battery disconnect when the cell is
over-charged or over-discharged.
- Maximum cell voltage for MOSFET conduction is factory
programmable between 4.0V and 4.4V with a ±25 mV
tolerance (0?C to +60?C).
- Minimum cell voltage for MOSFET conduction =
0.57?VMAX ±3.5 (0?C to +60?C).
- Internal 4 m? current sense resistor provides ±0.5A
maximum accuracy for detection of overcurrent faults.
The maximum charge and discharge current is factory
programmable between 1A and 5A. A single overcurrent
fault event opens and protects the MOSFET pair.
- Automatic detection of safe pack conditions for recovery
(MOSFET pair ON) from a fault condition (over/under
discharged or overcurrent).
- Average current drain = 1.2 μA typical.
- Optional Enable pack terminal can be used to prevent
accidental short circuit of pack and for maximizing the
shelf life of the pack (IC powers down when the pack is
not in use).
- Over-current events cause connection of an internal
50 k? “FET-Bypass” resistance across OFF MOSFET
pair. Loads >3–7 M? are required for return to
conduction mode.
- Over-charged states cause connection ofa5k?
“Cell-Bypass” resistor to ensure that the cell is not
allowed to be overcharged by leakage paths.
產(chǎn)品屬性
- 型號(hào)：
LM3641M
- 制造商：
NSC
- 制造商全稱：
National Semiconductor
- 功能描述：
Lithium-Ion Battery Pack Protection Circuit
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
NS |
2023+ |
SOP-8 |
3645 |
全新原廠原裝產(chǎn)品、公司現(xiàn)貨銷售 |
詢價(jià) | ||
NS |
22+ |
SOP |
3000 |
原裝正品,支持實(shí)單 |
詢價(jià) | ||
TI |
23+ |
DSBGA-9 |
5000 |
全新原裝,支持實(shí)單,非誠勿擾 |
詢價(jià) | ||
TI |
24+ |
DSBGA9 |
35200 |
全新原裝現(xiàn)貨/假一罰百! |
詢價(jià) | ||
TI |
23+ |
NA |
20000 |
詢價(jià) | |||
Texas Instruments |
21+ |
783-FCPBGA(29x29) |
5860 |
進(jìn)口原裝!長期供應(yīng)!絕對(duì)優(yōu)勢(shì)價(jià)格(誠信經(jīng)營 |
詢價(jià) | ||
TI/德州 |
2018+ |
DSBGA |
32500 |
德州代理承諾銷售原裝正品公司可開正規(guī)17%增值稅票 |
詢價(jià) | ||
TI/德州儀器 |
23+ |
DSBGA-9 |
1500 |
只供應(yīng)原裝正品 歡迎詢價(jià) |
詢價(jià) | ||
TI |
24+ |
DSBGA9 |
18560 |
假一賠十全新原裝現(xiàn)貨特價(jià)供應(yīng)工廠客戶可放款 |
詢價(jià) | ||
TI |
22 |
DSBGA-9 |
39890 |
3月31原裝,微信報(bào)價(jià) |
詢價(jià) |
