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LTC1980EGN#PBF

更新时间： 2024-11-05 13:09:43
品牌 Logo 应用领域
凌特 - Linear 转换器电池
页数 文件大小 规格书
16页 456K
描述
LTC1980 - Combination Battery Charger and DC/DC Converter; Package: SSOP; Pins: 24; Temperature Range: -40°C to 85°C

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LTC1980EGN#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP24,.24
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：8.48模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：10 V最小输入电压：2.85 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G24
JESD-609代码：e3长度：8.649 mm
湿度敏感等级：1功能数量：1
端子数量：24最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP24,.24
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.727 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：SINGLE
最大切换频率：340 kHz技术：CMOS
温度等级：COMMERCIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.899 mmBase Number Matches：1

LTC1980EGN#PBF 数据手册

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Final Electrical Specifications  
LTC1980  
Combination Battery  
Charger and DC/DC Converter  
May 2003  
U
DESCRIPTIO  
FEATURES  
The LTC®1980 integrates PWM power control for charg-  
ing a battery and converting the battery voltage to a  
regulated output or simultaneously charging the battery  
while powering system load from an unregulated AC wall  
adapter. Combining these features into a single IC pro-  
duces a smaller area and lower cost solution compared to  
■
Single Controller IC Includes Battery Charger  
Plus DC/DC Converter  
■
Wall Adapter Voltage May be Above or Below  
Battery Voltage  
■
LDO Controller Allows Simultaneous Charging  
and Regulating from Wall Adapter Input  
■
Standalone Li-Ion Battery Charger Including Charge  
Termination, Overvoltage Protection, Shorted-Cell  
Detection and Battery Recharge  
presentlyavailablemulti-ICsolutions.TheLTC1980shares  
the discrete components for both the battery charger and  
theDC/DCconverterthusminimizingsizeandcostrelative  
to dual controller solutions. Both the battery charger and  
DC/DC converter use a current mode flyback topology for  
high efficiency and excellent transient response. Optional  
BurstModeoperationandpower-downmodeallowpower  
density, efficiency and output ripple to be tailored to the  
application.  
■
■
■
Selectable 4.1V, 4.2V, 8.2V and 8.4V Float Voltages  
Simple NiMH and NiCd Battery Charger  
Pin Programmable Regulator Burst Mode® Operation  
and Shutdown for High Efficiency  
High Efficiency Current Mode 300kHz PWM  
Reduced Component Architecture  
Undervoltage Protection and Soft-Start Insures  
Start-Up with Current Limited Wall Adapter  
Small 24-Pin SSOP Package  
■
■
■
The LTC1980 provides a complete Li-Ion battery charger  
with charge termination timer, preset Li-Ion battery volt-  
ages, overvoltage and undervoltage protection, and user-  
programmableconstant-currentcharging.Automaticbat-  
tery recharging, shorted-cell detection, and open-drain  
C/10 and wall plug detect outputs are also provided. User  
programming allows NiMH and NiCd battery chemistries  
to be charged as well.  
■
U
APPLICATIO S  
■
Digital Cameras  
■
Handheld Computers  
■
Personal Digital Assistants  
1W to 10W Uninterruptable Power Supplies  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Li-Ion Charger and DC/DC Converter Using One IC  
3.3V Regulator Efficiency vs Load Current  
POWER FLOW  
90  
CHARGING  
BATTERY  
OPERATION  
UNREGULATED  
85  
80  
75  
70  
65  
60  
WALL ADAPTER  
Li-Ion  
BATTERY  
•
INPUT (3V TO 10V)  
SYSTEM  
POWER  
BAT-FET  
REG-FET  
•
LDO/  
SWITCH  
V
A
FIGURE 5  
= 3.6V  
3.3V  
1.8V  
1.5V  
BAT  
= 25°C  
SYSTEM LOAD  
T
DC/DC  
CONVERTERS  
10  
100  
1000  
LTC1980  
LOAD CURRENT (mA)  
1980 TA01  
1980 G04  
1980i  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
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中文翻译

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LTC1980EGN#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC1980EGN#TRPBF Linear

完全替代

 LTC1980 - Combination Battery Charger and DC/DC Converter; Package: SSOP; Pins: 24; Temper

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