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参数资料
| 型号： | LTC4070IDDB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR LIION/POLY 8DFN |
| 产品培训模块： | LTC4070 - Li-Ion/Polymer Shunt Battery Charger System |
| 标准包装： | 500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（3x2） |
| 包装： | 带卷 (TR) |
LTC4070
Li-Ion/Polymer Shunt
Battery Charger System
Low Operating Current (450nA)
1% Float Voltage Accuracy Over Full Temperature
50mA Maximum Internal Shunt Current
Pin Selectable Float Voltage Options:
Ultralow Power Pulsed NTC Float Conditioning for
Suitable for Intermittent, Continuous and Very Low
Low and High Battery Status Outputs
Simple Low Voltage Load Disconnect Application
Thermally Enhanced, Low Profile (0.75mm)
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
FEATURES
n
n
and Shunt Current Range
n
(500mA with External PFET)
n
4.0V, 4.1V, 4.2V
n
Li-Ion/Polymer Protection
n
Power Charging Sources
n
n
n
8-Lead (2mm × 3mm) DFN and MSOP Packages
APPLICATIONS
n
n
n
n
n
n
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners..
DESCRIPTION
The LTC ? 4070 allows simple charging of Li-Ion/Polymer
batteries from very low current, intermittent or continuous
charging sources. The 450nA to 50mA operating cur-
rent makes charging possible from previously unusable
sources. With the addition of an external pass device,
shunt current may be boosted to 500mA. Stacked cell high
voltage battery packs are inherently balanced with shunt
charging. With its low operating current, the LTC4070 is
well suited to charge thin film batteries in energy harvesting
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.
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. For
applications requiring pack protection, see LTC4071.
The device is offered in two thermally enhanced packages,
a compact low profile (0.75mm) 8-lead (2mm × 3mm)
DFN and an 8-lead MSOP package.
TYPICAL APPLICATION
Simple Shunt Charger with Load Disconnect
and NTC Conditioning
4.3
NTC Overtemperature Battery Float
Voltage Qualifying
V IN
R IN
Q1:FDR8508
4.2
4.1
ADJ = V CC
ADJ = FLOAT
ADJ
V CC
LBO
NTCBIAS
4.0
ADJ = GND
LTC4070
NTC
10k
3.9
GND
T
+
Li-Ion
3.8
NTHS0805N02N1002F
4070 TA01a
3.7
0
20
40 60
TEMPERATURE (°C)
80
100
4070 TA01b
4070fc
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4070IDDBTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070IMS8E | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070IMS8E#PBF | 功能描述:IC BATT CHRGR LIION/POLY 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4070IMS8E#TRPBF | 功能描述:IC BATT CHRGR LIION/POLY 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4070IMS8EPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
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