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參數(shù)資料
| 型號： | 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)： | 9/17頁 |
| 文件大?。?/td> | 272K |
| 代理商： | LM3647 |
9
www.national.com
Slow PWM-mode:
The PWM-pin turns the external current source on and off at
a rate of 0.1Hz. (This example is just one of many possible
design solutions.) The PWM-pin (SLOW_PWM) turns the
transistor Q1 on and off. When the transistor is off the current
source is on, and when the transistor is on the current source
is off (V_OUT at approximate 0.7V). The value of R1 de-
pends on the size of the charge current (see formula):
The PWM duty cycle for the different charge cycles are listed
below:
4.3.9 User Interface
The user interface consists of three LEDs and one buzzer.
The LEDs have four different states:
On, off, slow flash (~1 Hz) and fast flash (~10 Hz). The buzz-
er has three different states: off, one short beep (~100ms)
and one long beep (~1s).
The user interface is designed in a flexible way. Use of the
buzzer or the LEDs is optional, depending on design require-
ments. It is possible to use the LM3647 with one, two or all
three LEDs.
A single Charged Status LED can be implemented with a 2-
input NAND gate on LED1 and LED3. In this implemention,
note that a pull-up resistor is required on LED1 and LED3.
Ni-Cd/Ni-MH User Interface Scheme
C2
1uF
C1
1uF
C9
1uF
R5
10k
R6
10k
R22
10k
PWM
DC-PWM
CURRENT-LIMITER
I
out
=
V
d
= Voltage Drop Across D1
1.25 - V
d
R1
Charge Phase:
PWM Duty Cycle:
10%
100%
10%
5%
Soft Start
Fast Charge
Topping Charge
Maintenance Charge
Charge phase
LED1 status
LED2 status
LED3 status
Buzzer status
No battery
New battery / Temp-test
Softstart charge
Charging
Topping charge
Maintenance
Discharge
Temperature error
Error
Off
Fast flash
Slow flash
On
On
On
Off
2 Fast flashes
Fast flash
Off
Off
Off
Slow flash
Fast flash
Off
Slow flash
Off
Off
Off
Off
Off
Off
Off
On
Off
On
Fast flash
Off
Short beep
Off
Off
Off
Long beep
Off
Short beep
Short beep
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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 拓撲: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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