Datasheet > LM3622-4.1MDC

LM3622-4.1MDC

更新时间： 2024-11-04 20:05:47

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
9页	170K
描述
IC BATTERY CHARGE CONTROLLER, UUC, DIE, Switching Regulator or Controller

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LM3622-4.1MDC 技术参数

生命周期：	Transferred	包装说明：	DIE, DIE OR CHIP
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.58
模拟集成电路 - 其他类型：	BATTERY CHARGE CONTROLLER	最大输入电压：	24 V
最小输入电压：	4.5 V	标称输入电压：	5 V
JESD-30 代码：	X-XUUC-N	功能数量：	1
最高工作温度：	70 °C	最低工作温度：	-20 °C
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装等效代码：	DIE OR CHIP	封装形状：	UNSPECIFIED
封装形式：	UNCASED CHIP	电源：	4.5/24 V
认证状态：	Not Qualified	子类别：	Power Management Circuits
表面贴装：	YES	切换器配置：	SINGLE
技术：	BIPOLAR	温度等级：	COMMERCIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

LM3622-4.1MDC 数据手册

February 2000

LM3622

Lithium-Ion Battery Charger Controller

low-voltage battery threshold circuitry that removes this drive

when the cell voltage drops below a preset limit. The LV_SEL

pin programs this threshold voltage to either 2.7V/cell or

2.15V/cell. The low-voltage detection, which is a user en-

abled feature, provides an output signal that can be used to

enable a ″wake up charge″ source automatically to precon-

dition a deeply discharged pack.

General Description

The LM3622 is a charge controller for Lithium-Ion batteries.

This monolithic integrated circuit accurately controls an ex-

ternal pass transistor for precision Lithium-Ion battery charg-

ing. The LM3622 provides a constant voltage or constant

current (CVCC) configuration that changes, as necessary, to

optimally charge lithium-ion battery cells. Voltage charging

versions (4.1V, 4.2V, 8.2V, and 8.4V) are available for one or

two cell battery packs and for coke or graphite anode battery

chemistry.

The LM3622 is available in a standard 8-lead SOIC surface

mount package.

Features

n Versions for charging of 1 cell (4.1V or 4.2V) or 2 cells

(8.2V or 8.4V)

The LM3622 accepts input voltages from 4.5V to 24V. Con-

troller accuracy over temperature is 30mV/cell for A grade

and 50mV/cell for the standard grade. No precision exter-

n Versions for coke or graphite anode

nal resistors are required. Furthermore, the LM3622’s propri-

etary output voltage sensing circuit drains less than 200nA

from the battery when the input source is disconnected.

n Precision ( 30mV/cell) end-of-charge control

n Wide input range: 4.5V-24V

The LM3622 circuitry includes functions for regulating the

charge voltage with a temperature compensated bandgap

reference and regulating the current with an external sense

resistor. The internal bandgap insures excellent controller

performance over the operating temperature and input sup-

ply range.

n Low battery drain leakage: 200nA

n 15 mA available to drive low cost PNP

Applications

n Cellular phone cradle charger

n PDA/Notebook cradle charger

n Camcorder cradle charger

The LM3622 can sink 15mA minimum at the EXT pin to drive

the base of an external PNP pass transistor. It also has

Typical Application

DS100974-1

DS100974

www.national.com

12 3 4 5 6 7...9

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与LM3622-4.1MDC相关器件

型号	品牌	获取价格	描述	数据表
LM3622A-4.1MDC	NSC	获取价格	IC BATTERY CHARGE CONTROLLER, UUC, DIE, Switching Regulator or Controller
LM3622A-4.2MDC	NSC	获取价格	IC BATTERY CHARGE CONTROLLER, UUC, DIE, Switching Regulator or Controller
LM3622A-4.2MWC	NSC	获取价格	IC BATTERY CHARGE CONTROLLER, UUC, WAFER, Switching Regulator or Controller
LM3622A-8.4MDC	NSC	获取价格	IC BATTERY CHARGE CONTROLLER, UUC, DIE, Switching Regulator or Controller
LM3622AM-4.1	NSC	获取价格	Lithium-Ion Battery Charger Controller
LM3622AM-4.1/NOPB	TI	获取价格	BATTERY CHARGE CONTROLLER, PDSO8, SOIC-8
LM3622AM-4.2	NSC	获取价格	Lithium-Ion Battery Charger Controller
LM3622AM-4.2/NOPB	TI	获取价格	BATTERY CHARGE CONTROLLER, PDSO8, SOIC-8
LM3622AM-8.1	ETC	获取价格	Battery Management
LM3622AM-8.2	NSC	获取价格	Lithium-Ion Battery Charger Controller

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