LTC4070IMS8E

更新时间： 2024-09-24 05:43:59

品牌	Logo	应用领域
凌特 - Linear		电池
页数	文件大小	规格书
16页	179K
描述
Li-Ion/Polymer Shunt Battery Charger System

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中文翻译

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LTC4070IMS8E 数据手册

LTC4070

Li-Ion/Polymer Shunt

Battery Charger System

FEATURES

DESCRIPTION

The LTC^®4070 allows simple charging of Li-Ion/Polymer

batteriesfromverylowcurrent,intermittentorcontinuous

charging sources. The 450nA to 50mA operating cur-

rent makes charging possible from previously unusable

sources. With the addition of an external pass device,

shuntcurrentmaybeboostedto500mA. Stackedcellhigh

voltage battery packs are inherently balanced with shunt

charging. With its low operating current, the LTC4070 is

wellsuitedtochargethinfilmbatteriesinenergyharvesting

applications where charging sources may be intermittent

or very low power. The unique architecture of the LTC4070

allows for an extremely simple battery charger solution;

requiring just one external resistor.

Low Operating Current (450nA)

1% Float Voltage Accuracy Over Full Temperature

and Shunt Current Range

50mA Maximum Internal Shunt Current

(500mA with External PFET)

Pin Selectable Float Voltage Options:

4.0V, 4.1V, 4.2V

Ultralow Power Pulsed NTC Float Conditioning for

Li-Ion/Polymer Protection

Suitable for Intermittent, Continuous and Very Low

Power Charging Sources

Low and High Battery Status Outputs

Simple Low Voltage Load Disconnect Application

Thermally Enhanced, Low Profile (0.75mm)

The LTC4070 offers a pin selectable float voltage with 1%

accuracy across the full range of operating temperature

and shunt current. The integrated thermal battery quali-

fier extends battery lifetime and improves reliability by

automatically reducing the battery float voltage at NTC

thermistor temperatures above 40°C. The LTC4070 also

provides both low and high battery status outputs. With

the addition of an external PFET, the low-battery output

pin can implement a latch-off function that automatically

disconnects the system load from the battery to protect

the battery from deep discharge.

8-Lead (2mm × 3mm) DFN and MSOP Packages

APPLICATIONS

Low Power Li-Ion/Polymer Battery Back-Up

Solar Power Systems with Back-Up

Memory Back-Up

Embedded Automotive

Thin Film Batteries

Energy Scavenging/Harvesting

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners..

Thedeviceisofferedintwothermallyenhancedpackages,

a compact low profile (0.75mm) 8-lead (2mm × 3mm)

DFN and an 8-lead MSOP package.

TYPICAL APPLICATION

NTC Overtemperature Battery Float Voltage Qualifying

Simple Shunt Charger with Load

Disconnect and NTC Conditioning

4.3

ADJ = V

4.2

ADJ = FLOAT

4.1

Q1:FDR8508

ADJ = GND

4.0

LBO

ADJ

NTCBIAS

3.9

3.8

3.7

LTC4070

10k

NTC

GND

Li-Ion

100

TEMPERATURE (°C)

NTHS0805E3103LT

4070 TA01a

4070 TA01b

4070f

12 3 4 5 6 7...16

中文翻译

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与LTC4070IMS8E相关器件

型号	品牌	获取价格	描述	数据表
LTC4070IMS8E#TRPBF	Linear	获取价格	LTC4070 - Li-Ion/Polymer Shunt Battery Charger System; Package: MSOP; Pins: 8; Temperature
LTC4070IMS8EPBF	Linear	获取价格	Li-Ion/Polymer Shunt Battery Charger System
LTC4070IMS8ETRPBF	Linear	获取价格	Li-Ion/Polymer Shunt Battery Charger System
LTC4071	Linear	获取价格	Piezoelectric Energy Harvesting Power Supply with 14V Minimum VIN
LTC4071	Linear Systems	获取价格	Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect
LTC4071	ADI	获取价格	具低电池电量断接功能的并联锂离子 / 锂聚合物电池充电器系统
LTC4071EDDB	Linear Systems	获取价格	Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect
LTC4071EDDB#TRPBF	Linear	获取价格	LTC4071 - Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect; Package
LTC4071EMS8E	Linear Systems	获取价格	Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect
LTC4071IDDB	Linear Systems	获取价格	Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect

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