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多节锂电充电管理ZCC6688 手册
资料介绍
ZCC6688是一款3A锂电池充电管理芯片,可以支持单节、双节、三节、四节锂电池充电管理应用。ZCC6688采用500Khz同步降压拓扑结构,内置功率MOSFET,提升充电效率的同时,简化了外围电路结构,可以在广泛的应用在便携式手持设备。ZCC6688包含完整的充电循环,涓流、恒流、恒压和终止充电、自动再充功能,可以支持1%精度的4.2V/8.4V/12.6V/16.8V锂电池充电浮充电压。充电电流设置、浮充电压微调和电池节数选择均由简单的外部电路设置。附加功能包括:锂电池短路保护、温度保护和过压保护功能。ZCC6688采用ESSOP10封装。
特点:
·输入电压范围4V~24V
·最大充电率的动态输入电流分配
·3.0A最大充电电流
·无需外部mosfet和隔离二极管
·效率高达90%
·恒温恒压操作热调节
·充电前和充电期间的可选电池温度监测低功率自动休眠模式
·过电流保护
·ESOP8中的可用消耗量
·符合RoHS,100%无铅
部分文件列表
文件名 | 大小 |
ZCC6688多节锂电池充电管理芯片(3A大电流充电,开关型,同步降压,集成mosfet).pdf | 644K |
部分页面预览
(完整内容请下载后查看)无锡市至诚微电子有限公司
ZCC6688
3A Synchronous Buck Li-ion Charger
General Description
Features
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Input voltage range 4V~20V
The ZCC6688 is a 2A Li-Ion battery charger. It utilizes
a 500KHz synchronous buck converter topology to
reduce power dissipation during charging. Low power
dissipation, an internal MOSFET allow a physically
small charger that can be embedded in a wide range
of handheld applications. The ZCC6688 includes
complete charge termination circuitry, automatic
recharge and a ±1% 4.2V / 8.4V / 12.6V float voltage.
Dynamic input current allocation for maximum
charging rate
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3.0A Maximum Charge Current
No External MOSFETs and Blocking Diode
Required
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Efficiency up to 90%
Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
Battery charge current, charge timeout and end-of-
charge indication parameters are set with external
components. Additional features include shorted cell
detection; temperature qualified charging and
overvoltage protection. The ZCC6688 is available in a
low profile ESOP8 and package.
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Optional Battery Temperature MonitoringBefore
and During Charge Automatic Sleep Mode for
Low-Power
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Over Current Protection
Consumption Available in ESOP8
RoHS Compliant and 100% Lead (Pb)-Free
Typical Application Circuit
Functional Pin Description
ESOP8
Applications
Ordering Information
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Portable Media Players
Cellular and Smart mobile phone
PDA/DSC
Order Number
Package Type
Float Voltage
Packing
ZCC6688A
-4.2
ESOP8
4.20V
3000PCS/Pack
3000PCS/Pack
3000PCS/Pack
3000PCS/Pack
Handheld Battery-Powered Devices
Handheld Computers
Charging Docks and Cradles
ZCC6688B
-8.4
ESOP8
8.40V
ZCC6688C
-12.6
ESOP8
12.60V
ZCC6688D
-16.8
ESOP8
16.80V
MAY-2018
ZCC6688
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