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ISL6256HRZ PDF预览

ISL6256HRZ

更新时间: 2024-11-13 04:58:39
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电池电脑
页数 文件大小 规格书
27页 653K
描述
Highly Integrated Battery Charger with Automatic Power Source Selector for Notebook Computers

ISL6256HRZ 数据手册

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ISL6256, ISL6256A  
®
Data Sheet  
July 19, 2007  
FN6499.1  
Highly Integrated Battery Charger with  
Automatic Power Source Selector for  
Notebook Computers  
Features  
• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)  
• ±3% Accurate Input Current Limit  
The ISL6256, ISL6256A is a highly integrated battery charger  
controller for Li-Ion/Li-Ion polymer batteries. High Efficiency is  
achieved by a synchronous buck topology and the use of a  
MOSFET, instead of a diode, for selecting power from the  
adapter or battery. The low side MOSFET emulates a diode at  
light loads to improve the light load efficiency and prevent  
system bus boosting.  
• ±3% Accurate Battery Charge Current Limit  
• ±25% Accurate Battery Trickle Charge Current Limit  
• Programmable Charge Current Limit, Adapter Current  
Limit and Charge Voltage  
• Fixed 300kHz PWM Synchronous Buck Controller with  
Diode Emulation at Light Load  
The constant output voltage can be selected for 2, 3 and 4  
series Li-Ion cells with 0.5% accuracy over-temperature. It  
can also be programmed between 4.2V+5%/cell and 4.2V-  
5%/cell to optimize battery capacity. When supplying the load  
and battery charger simultaneously, the input current limit for  
the AC adapter is programmable to within 3% accuracy to  
avoid overloading the AC adapter, and to allow the system to  
make efficient use of available adapter power for charging. It  
also has a wide range of programmable charging current. The  
ISL6256, ISL6256A provides outputs that are used to monitor  
the current drawn from the AC adapter, and monitor for the  
presence of an AC adapter. The ISL6256, ISL6256A  
automatically transitions from regulating current mode to  
regulating voltage mode.  
• Overvoltage Protection  
• Output for Current Drawn from AC Adapter  
• AC Adapter Present Indicator  
• Fast Input Current Limit Response  
• Input Voltage Range 7V to 25V  
• Support 2-, 3- and 4-Cells Battery Pack  
• Up to 17.64V Battery-Voltage Set Point  
• Control Adapter Power Source Select MOSFET  
• Thermal Shutdown  
• Aircraft Power Capable  
ISL6256, ISL6256A has a feature for automatic power source  
selection by switching to the battery when the AC adapter is  
removed or switching to the AC adapter when the AC adapter  
is available. It also provides a DC adapter monitor to support  
aircraft power applications with the option of no battery  
charging.  
• DC Adapter Present Indicator  
• Battery Discharge MOSFET Control  
• Less than 10µA Battery Leakage Current  
• Supports Pulse Charging  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
Ordering Information  
PART  
NUMBER  
(Notes 1, 2)  
TEMP  
RANGE  
(°C)  
Applications  
PART  
MARKING  
PACKAGE  
(Pb-free)  
PKG.  
DWG. #  
• Notebook, Desknote and Sub-notebook Computers  
• Personal Digital Assistant  
ISL6256HRZ* ISL 6256HRZ  
ISL6256HAZ* ISL 6256HAZ  
-10 to +100 28 Ld 5x5 QFN L28.5×5  
-10 to +100 28 Ld QSOP M28.15  
ISL6256AHRZ* ISL6256 AHRZ -10 to +100 28 Ld 5x5 QFN L28.5×5  
ISL6256AHAZ* ISL6256 AHAZ -10 to +100 28 Ld QSOP M28.15  
NOTES:  
1. Intersil Pb-free plus anneal products employ special Pb-free material  
sets; molding compounds/die attach materials and 100% matte tin  
plate termination finish, which are RoHS compliant and compatible  
with both SnPb and Pb-free soldering operations. Intersil Pb-free  
products are MSL classified at Pb-free peak reflow temperatures that  
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
2. *Add “-T” for Tape and Reel. Please refer to TB347 for details on reel  
specifications.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2007. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  

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