CXLB7389系列是高度集成的单电池手提式锂离子/聚合物电池充电器设备。此充电器设计用于交流适配器或USB端口的类型，能够在低至2.65V的输入电压下工作。CXLB7389作为线性充电器工作，并为电池分为三个阶段：滴流，恒流，和恒定电压。当使用交流适配器时
外部电阻设置充电电流的大小，可通过TDFN10编程至1.5A封装和限流适配器，功耗最低
消散。CXLB7389采用热调节回路进行控制电路板缺电时保持安全运行的充电电流足够散热。可编程充电定时器为终端提供备用安全。CXLB7389如果电池电压低于内部阈值并自动进入移除直流电源时的休眠模式。无外部充电需要感测电阻器或阻断二极管。一个NTC热敏电阻接口用于为电池充电在安全温度范围内。
[ CXLB7389 ]
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产品概述 返回TOP
The CXLB7389 series are highly integrated single cell
Li-Ion/Polymer battery charger IC designed for handheld
devices. This charger is designed to work with various
types of AC adapters or a USB port and capable of
operating with an input voltage as low as 2.65V.
The CXLB7389 operates as a linear charger and charges the
battery in three phases: trickle current, constant current,
and constant voltage. When AC-adapter is applied, an
external resistor sets the magnitude of the charge current,
which may be programmed up to 1.5A with TDFN10
package and a current-limited adapter for lowest power
dissipation.
The CXLB7389 features thermal regulation loop to control
charge current to keep safe operation when PCB lacked of
enough heat-sinking. A programmable charge timer
provides a backup safety for termination. The CXLB7389
automatically re-starts the charge if the battery voltage
falls below an internal threshold and automatically enters
sleep mode when DC supplies are removed. No external
sense resistor or blocking diode is required for charging. A
NTC thermistor interface is used for charging the battery
in a safe temperature range.
产品特点 返回TOP
Very Low Power Dissipation
Accepts Multiple Types of Adapters or USB BUS Power
Integrated Power FET and Current Sensor for Up
to 1.5A Charge Applications
Guaranteed to Operate at 2.65V After Start-Up
Charge Termination by Minimum Current and
Time
Precharge Conditioning With Safety Timer
Reverse Leakage Protection Prevents Battery
Drainage
Charge Current Thermal Regulation
Status Outputs for LED or System Interface
Indicates Charge and Fault Conditions
Optional Battery Temperature Monitoring Before
and During Charge
Automatic Sleep Mode for Low-Power
Consumption
Available in 3mm × 3mm TDFN-10 Package
RoHS Compliant and 100% Lead (Pb)-Free
应用范围 返回TOP
z PDAs, Cell Phones and Smart Phones
z Portable Instruments.
z Stand-Alone Charger.
z USB Bus Powered Charger
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产品封装图 返回TOP
电路原理图 返回TOP
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Standalone Linear Li-Ion Battery Charger With Thermal Regulation in ThinSOT |
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Part Number |
remark |
Packs |
Vin (V) |
Charge Current (A) |
Charge Termination |
Control Topology |
Temperature Monitoring |
|
XStandalone Linear Li-Ion Battery Charger With Thermal Regulation in ThinSOT |
1 Cells, Li-Ion |
4.35 ~ 6.5 |
800mA |
Minimum current |
Linear W/FET |
No |
|
|
Linear Li-Ion/Polymer Charger IC with Integrated FET and Charger Timer |
1 Cells, Li-Ion |
4.35 ~ 6 |
1 |
Minimum current & Safety timer |
Linear W/FET |
Yes |
|
|
Dual Source AC/USB Li-Ion/Polymer Charger IC for Portable Applications |
1 Cells, Li-Ion |
4.35 ~ 6 USB |
1 |
Minimum current & Safety timer |
Linear W/FET |
Yes |
|
|
Li-ion/Li Polymer Battery Charger |
1 Cells, Li-Ion |
4.3 ~ 6.5 |
2 |
Minimum current & Safety timer |
Linear W/FET |
Yes |
|
|
witch Mode Li-Ion/Polymer Battery Charger |
1/2 Cells, Li-Ion |
4.7~20 |
1~3 |
Minimum current & Safety timer |
Switching |
Yes |
|
|
Switch Mode Li-Ion/Polymer Battery Charger |
1/2 Cells, Li-Ion |
4.7~20 |
1~3 |
Minimum current & Safety timer |
Switching |
Yes |
|
|
Switch Mode Li-Ion/Polymer Battery Charger |
1 cells, Li-Ion |
4.7~20 |
1~3 |
Minimum current & Safety timer |
Switching |
Yes |
|
◀ 上一篇:自动进入睡眠状态两个电源都被卸下时的模式CXLB7388高度集成的单电池手提式锂离子聚合物电池充电器设备集成功率场效应管和电流传感器从交流适配器到1A充电应用集成USB控制
下一篇▶:CXLB7392电流模式PWM操作降压交换式架构的恒定电流锂离子电池充电器频率为恒定500kHz单节4.2V双节8.4V锂离子电池充电涓流恒流恒压三个阶段充电
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