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LTC3550EDHC-1 PDF预览

LTC3550EDHC-1

更新时间: 2024-09-24 05:43:55
品牌 Logo 应用领域
凌特 - Linear 电池
页数 文件大小 规格书
24页 344K
描述
Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter

LTC3550EDHC-1 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON,
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16模拟集成电路 - 其他类型:BATTERY CHARGE CONTROLLER
控制模式:CURRENT-MODE最大输入电压:5.5 V
最小输入电压:2.5 V标称输入电压:3.6 V
JESD-30 代码:R-PDSO-N16JESD-609代码:e0
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:70 °C最低工作温度:
最大输出电流:1.3 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):235
认证状态:Not Qualified座面最大高度:0.8 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:1800 kHz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:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:20
宽度:3 mmBase Number Matches:1

LTC3550EDHC-1 数据手册

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LTC3550-1  
Dual Input USB/AC Adapter  
Li-Ion Battery Charger with  
600mA Buck Converter  
U
DESCRIPTIO  
FEATURES  
The LTC®3550-1 is a standalone linear charger with a  
600mA monolithic synchronous buck converter. It is  
capable of charging a single-cell Li-Ion battery from both  
wall adapter and USB inputs. The charger automatically  
selects the appropriate power source for charging.  
Charges Single-Cell Li-Ion Batteries from Wall  
Adapter and USB Inputs  
Automatic Input Power Detection and Selection  
Charge Current Programmable Up to 950mA from  
Wall Adapter Input  
High Efficiency 600mA Synchronous DC/DC  
Internal thermal feedback regulates the battery charge  
currenttomaintainaconstantdietemperatureduringhigh  
power operation or high ambient temperature conditions.  
The float voltage is fixed at 4.2V and the charge currents  
are programmed with external resistors. The LTC3550-1  
terminatesthechargecyclewhenthechargecurrentdrops  
below the programmed termination threshold after the  
final float voltage is reached. With power applied to both  
inputs, the LTC3550-1 can be put into shutdown mode  
reducing the DCIN supply current to 20μA, the USBIN  
supply current to 10μA, and the battery drain current to  
less than 2μA.  
Converter  
No External MOSFET, Sense Resistor or Blocking  
Diode Needed  
Thermal Regulation Maximizes Charge Rate Without  
Risk of Overheating*  
Preset Charge Voltage with 0.6ꢀ Accuracy  
Programmable Charge Current Termination  
1.5MHz Constant Frequency Operation (Step-Down  
Converter)  
18μA USB Suspend Current in Shutdown  
Independent “Power Present” Status Outputs  
Charge Status Output  
Automatic Recharge  
The synchronous buck converter generates a fixed output  
voltage of 1.875V. The switching frequency is internally  
set at 1.5MHz, allowing the use of small surface mount  
inductors and capacitors.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
*Protected by U.S. patents, includng 6522118, 6700364, 6580258, 5481178, 6304066,  
6127815, 6498466, 6611131  
Available in a Thermally Enhanced, Low Profile  
(0.75mm) 16-Lead (5mm x 3mm) DFN Package  
U
APPLICATIO S  
Cellular Telephones  
U
TYPICAL APPLICATIO  
Complete Charge Cycle (1100mA Battery)  
1000  
800  
600  
400  
200  
0
4.2  
4.0  
3.8  
3.6  
3.4  
Dual Input Battery Charger and DC/DC Converter  
LTC3550-1  
RUN SW  
2.2µH  
V
OUT  
1.875V  
600mA  
WALL  
CONSTANT VOLTAGE  
USBIN = 5V  
C
OUT  
ADAPTER  
DCIN  
USBIN  
IUSB  
IDC  
V
OUT  
10µF  
800mA (WALL)  
500mA (USB)  
CER  
V
USB  
PORT  
CC  
T
= 25°C  
A
IDC  
1µF  
BAT  
R
R
= 1.25k  
= 2k  
2k  
1%  
4.7µF  
IUSB  
ITERM  
5.0  
2.5  
0
4.2V  
+
1µF  
GND  
2k  
1%  
1.24k  
1%  
SINGLE-CELL  
Li-Ion BATTERY  
–2.5  
3550-1 TA01  
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
TIME (HR)  
3550-1 TA02  
35501f  
1

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