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LTC4055EUF PDF预览

LTC4055EUF

更新时间： 2024-11-17 22:51:47
品牌 Logo 应用领域
凌特 - Linear 电池控制器
页数 文件大小 规格书
24页 284K
描述
USB Power Controller and Li-Ion Linear Charger

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中文翻译

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LTC4055EUF 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Transferred零件包装代码：QFN
包装说明：HVQCCN, LCC16,.16SQ,25针数：16
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.13
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-PQCC-N16JESD-609代码：e0
长度：4 mm湿度敏感等级：1
信道数量：3功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC16,.16SQ,25
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235电源：5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Power Management Circuits最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.35 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.65 mm
端子位置：QUAD处于峰值回流温度下的最长时间：20
宽度：4 mmBase Number Matches：1

LTC4055EUF 数据手册

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Electrical Specifications Subject to Change  
LTC4055  
USB Power Controller  
and Li-Ion Linear Charger  
U
FEATURES  
DESCRIPTIO  
■
Charges Single Cell Li-Ion Batteries Directly from  
The LTC®4055 is a USB power manager and Li-Ion battery  
charger designed to work in portable battery-powered  
applications. The part manages and limits the total current  
used by the USB peripheral for operation and battery  
charging. Depending on the state of the current select pin  
(HPWR),totalinputcurrentcanbelimitedtoeither100mA  
or 500mA. The voltage drop from the USB supply or  
battery to the USB peripheral is typically less than 100mV  
at400mAand20mVat80mA.Othermanagementfeatures  
include: automatic switch over to battery when input is  
removed, inrush current limiting, reverse current block-  
ing, undervoltage lockout and thermal shutdown.  
USB Port  
■
Load Dependent Charging Guarantees USB Input  
Current Compliance  
■
Automatic Battery Switchover When Input Supply  
is Removed  
■
Constant-Current/Constant-Voltage Operation with  
Thermal Feedback to Maximize Charging Rate  
Without Risk of Overheating  
■
Selectable 100% or 20% Current Limit  
(e.g., 500mA/100mA)  
Low Loss Full PowerPathTM Control with Ideal Diode  
■
Operation (Reverse Current Blocking)  
The LTC4055 includes a complete constant-current/con-  
stant-voltage linear charger for single cell Li-ion batteries.  
The float voltage applied to the battery is held to a tight  
0.8%(typ)tolerance,andchargecurrentisprogrammable  
usinganexternalresistortoground.Fullydischargedcells  
are automatically trickle charged at 10% of the pro-  
grammed current until the cell voltage exceeds 2.8V. Total  
charge time is programmable by an external capacitor to  
ground. When the battery drops 100mV below the float  
voltage, automatic recharging of the battery occurs. Also  
featured is an NTC thermistor input used to monitor  
battery temperature while charging.  
■
Preset 4.2V Charge Voltage with 0.8% Accuracy  
■
USB Compliant Suspend Mode  
■
Programmable Charge Current and Termination Timer  
■
Automatic Recharge  
Soft-Start Limits Inrush Current  
■
■
NTC Thermistor Input for Temperature Qualified  
Charging  
■
Tiny (4mm × 4mm × 0.8mm) QFN Package  
U
APPLICATIO S  
■
Portable USB Devices: Cameras, MP3 Players, PDAs  
The LTC4055 is available in a 16-pin low profile  
(4mm × 4mm) QFN package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
PowerPath is a trademark of Linear Technology Corporation.  
U
High Power/Full Charge  
RPROG = RCLPROG = 100k  
TYPICAL APPLICATIO  
600  
5V (NOM)  
TO LDOs,  
REGs, ETC  
I
IN  
FROM USB  
IN1  
IN2  
OUT  
BAT  
500  
400  
300  
200  
100  
0
CABLE V  
BUS  
10µF  
1Ω  
10µF  
+
Li-Ion  
CELL  
V
NTC  
I
LOAD  
NTC  
LTC4055  
WALL  
SHDN  
SUSP  
HPWR  
CHRG  
ACPR  
I
BAT  
CHARGING  
SUSPEND USB POWER  
500mA/100mA SELECT  
TIMER PROG CLPROG  
GND  
0.1µF  
100k 100k  
–100  
4055 TA01  
0
100  
200  
300  
(mA)  
400  
500  
600  
I
BAT  
(IDEAL DIODE)  
I
LOAD  
4055 TA02  
4055p  
1
1234567...24

中文翻译

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