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LTC4120EUD#PBF

更新时间： 2024-09-24 20:04:15
品牌 Logo 应用领域
凌特 - Linear 电池无线
页数 文件大小 规格书
30页 341K
描述
LTC4120/LTC4120-4.2 - Wireless Power Receiver and 400mA Buck Battery Charger; Package: QFN; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LTC4120EUD#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：QCCN, LCC16,.12SQ,20
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：8.43模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-PQCC-N16JESD-609代码：e3
湿度敏感等级：1端子数量：16
最高工作温度：85 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：QCCN
封装等效代码：LCC16,.12SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER峰值回流温度（摄氏度）：NOT SPECIFIED
电源：15 V认证状态：Not Qualified
子类别：Power Management Circuits标称供电电压 (Vsup)：15 V
表面贴装：YES技术：CMOS
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LTC4120EUD#PBF 数据手册

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LTC4120  
Wireless Power Receiver and  
400mA Buck Battery Charger  
FeaTures  
DescripTion  
The LTC®4120 is a constant-current/constant-voltage  
wirelessreceiverandbatterycharger.Anexternalprogram-  
ming resistor sets the charge current up to 400mA. The  
programmablefloatvoltageoftheLTC4120accommodates  
several battery chemistries. The LTC4120 uses a Dynamic  
Harmonization Control (DHC) technique that allows high  
efficiency contactless charging across an air gap.  
n
Dynamic Harmonization Control Optimizes  
Wireless Charging Over a Wide Coupling Range  
n
Wide Input Voltage Range: 4.3V to 40V  
n
Adjustable Battery Float Voltage: 3.5V to 11V  
50mA to 400mA Charge Current Programmed with a  
Single Resistor  
n
n
n
n
n
n
1% Feedback Voltage Accuracy  
Programmable 5% Accurate Charge Current  
No Microprocessor Required  
The LTC4120 regulates its input voltage via the DHC pin.  
This technique modulates the resonant frequency of a  
receiver tank to automatically adjust the power received  
as well as the power transmitted to provide an efficient  
solution for wirelessly charging battery-powered devices.  
No Transformer Core  
Thermally Enhanced, Low Profile 16-Lead  
(3mm × 3mm × 0.75mm) QFN Package  
Wireless charging with the LTC4120 provides a method  
to power devices in harsh environments without requiring  
expensive failure-prone connectors. This allows products  
to be charged while locked within sealed enclosures, or  
in moving or rotating equipment, or where cleanliness or  
sanitation is critical.  
applicaTions  
n
Handheld Instruments  
n
Industrial/Military Sensors and Devices  
n
Harsh Environments  
n
Portable Medical Devices  
n
n
This full featured battery charger includes accurate RUN  
pinthreshold,lowvoltagebatterypreconditioningandbad  
battery fault detection, timer termination, auto-recharge,  
and NTC temperature qualified charging. The FAULT pin  
providesanindicationofbadbatteryortemperaturefaults.  
Physically Small Devices  
Electrically Isolated Devices  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
Once charging is terminated, the LTC4120 signals end-of-  
charge via the CHRG pin, and enters a low current sleep  
mode. An auto-restart feature starts a new charging cycle  
if the battery voltage drops by 2.5%.  
Typical applicaTion  
Wireless Rx Voltage/Charge Current vs Spacing  
26.7nF  
400  
333  
267  
200  
133  
67  
40  
35  
30  
25  
IN  
RUN  
INTV  
CC  
FREQ  
BOOST  
2.2µF  
22nF 33µH  
I
CHARGE  
MAX  
10µF  
V
LTC4120  
IN  
6.5nF  
47µH  
SW  
Tx CIRCUITRY  
5µH  
NOT  
DHC  
CHGSNS  
NTC  
CHARGING  
FAULT  
CHRG  
BAT  
1.01M  
1.35M  
20  
15  
10  
+
Li-Ion  
4.2V  
T
FB  
CHARGING  
GND PROG FBG  
3.01k  
10µF  
0
0.4 0.6  
0.8 1.0 1.2  
SPACING (cm)  
1.4  
1.6  
1.8  
4120 TA01a  
4120 TA01b  
4120fa  
1
For more information www.linear.com/LTC4120  
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