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參數(shù)資料
| 型號(hào)： | LM3647 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Universal Battery Charger for Li-Ion, Ni-MH and Ni-Cd Batteries |
| 中文描述： | 通用電池充電器鋰離子電池，鎳氫，鎳鎘電池 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 272K |
| 代理商： | LM3647 |
L
2000 National Semiconductor Corporation
www.national.com
LM3647
Universal Battery Charger
for Li-Ion, Ni-MH and Ni-Cd Batteries
1.0 General Description
The LM3647 is a charge controller for Lithium-Ion (Li-Ion),
Nickel-Metal Hydride (Ni-MH) and Nickel-Cadmium (Ni-
Cd) batteries. The device can use either a pulsed-current
charging or a constant-current charging technique. The
device can also be configured to discharge before charg-
ing. Throughout the charging sequence the LM3647 mon-
itors voltage and/or temperature and time in order to
terminate charging.
I
Negative delta voltage (-
V)
I
Maximum voltage
I
Optional: Delta temperature/delta time (
T/
t)
I
Optional: Maximum temperature
I
Backup: Maximum time
If both voltage and temperature fail to trigger the termina-
tion requirements, then the maximum time (configured by
externalhardware) stepsin which terminates the charging.
In Ni-Cd/Ni-MH mode, four different charging stages are
used:
I
Soft-start charge
I
Fast charge
I
Topping charge
I
Maintenance charge
In Li-Ion mode, four different charging stages are used:
I
Qualification
I
Fast Charge Phase 1, Constant Current
I
Fast Charge phase 2, Constant Voltage
I
Maintenance charge
The charge current of the LM3647 is configured via exter-
nal resistors, which in turn controls the duty cycle of the
PWM switching control output. For cost-sensitive applica-
tions, the LM3647 charge controller can be configured
without a temperature sensor and to use an external cur-
rent source.
PRELIMINARY
March 2000
When using an external current source, the current is con-
trolled by the LM3647 which turns the current source on
and off. The LM3647 automatically detects the presence of
a battery and starts the charging procedure when the bat-
tery is installed. Whenever an error occurs (e.g., short cir-
cuit, temperature too high, temperature too low, bad
battery, charge time over, etc.) the LM3647 will stay in error
mode until the battery is removed or it gets within the al-
lowed charging temperature range. The LM3647 is avail-
able in a standard 20-lead SOIC surface mount package.
Key Features
I
Auto-adaptive fast charge
I
High-resolution, accurate voltage monitoring prevents
Li-Ion undercharge or overcharge
I
Fast charge, pre-charge and maintenance currents are
provided. Different currents are selectable via external
resistors.
I
Fast-charge termination by
temperature/
time, maxi-
mum voltage, maximum temperature, negative
volt-
age and maximum time
I
Dynamically detects battery insertion, removal, short
circuit and bad battery without additional hardware
I
Supports charging of battery packs with 2-8 cells of Ni-
Cd/Ni-MH or 1-4 cells of Li-Ion
I
Three LED indicators and Buzzer output indicate oper-
ational modes
I
Ni-MH/Ni-Cd charge mode, Li-Ion charge mode or dis-
charge mode can be selected manually
I
PWM switching controller
Applications
I
Battery charging systems for:
— Portable consumer electronics
— Audio/video equipment
— Communications equipment
— Point of sale devices
— Power tools
— Personal convenience products
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3647IM | 功能描述:IC BATT CHARGER UNIVERSAL 20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LM3647IM | 制造商:Texas Instruments 功能描述:IC UNIV BATT CHARGER 3647 SOIC20 |
| LM3647M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| LM3648EVM | 功能描述:LM3648 1, Non-Isolated Output LED Driver Evaluation Board 制造商:texas instruments 系列:- 零件狀態(tài):有效 電流 - 輸出/通道:1.5A 輸出和類型:1，非隔離 電壓 - 輸出:- 特性:I2C 電壓 - 輸入:2.5 V ~ 5.5 V 所含物品:板 使用的 IC/零件:LM3648 標(biāo)準(zhǔn)包裝:1 |
| LM3648TTYFFR | 功能描述:LED 驅(qū)動(dòng)器 IC 1 輸出 DC DC 穩(wěn)壓器 升壓（升壓） 調(diào)光 1.5A（閃存） 12-DSBGA 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:DC DC 穩(wěn)壓器 拓?fù)?升壓（升壓） 內(nèi)部開關(guān):是 輸出數(shù):1 電壓 - 供電（最低）:2.5V 電壓 -?供電（最高）:5.5V 電壓 - 輸出:- 電流 - 輸出/通道:1.5A（閃存） 頻率:4MHz 調(diào)光:- 應(yīng)用:照相機(jī)閃光燈 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:12-UFBGA，DSBGA 供應(yīng)商器件封裝:12-DSBGA 標(biāo)準(zhǔn)包裝:1 |
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