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ISL6258 PDF预览

ISL6258

更新时间: 2024-11-14 01:22:35
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
2页 185K
描述
Narrow VDC Regulator/Charger with SMBus Interface

ISL6258 数据手册

 浏览型号ISL6258的Datasheet PDF文件第2页 
DATA SHORT  
To request the full datasheet, please visit www.intersil.com/products/ISL6258 or ISL6258A  
ISL6258, ISL6258A  
FN6571  
Rev 1.00  
December 11, 2007  
Narrow VDC Regulator/Charger with SMBus Interface  
The ISL6258, ISL6258A are a highly integrated Narrow VDC  
system voltage regulator and battery charger controller.  
Operating parameters are programmable over the System  
Management Bus (SMBus). The ISL6258, ISL6258A are  
designed for applications where the system power source is  
either the battery pack or the output of the regulator/charger.  
This makes the max voltage to the system equal to the max  
battery voltage instead of the max adapter voltage. The  
ISL6258, ISL6258A also include a system to control trickle  
charging deeply discharged batteries while maintaining  
system voltage at a user defined minimum. High efficiency is  
achieved with a DC/DC synchronous-rectifier buck converter,  
equipped with diode emulation for enhanced light load  
efficiency and AC adapter boosting prevention. The ISL6258,  
ISL6258A can charge two to four series connected  
Lithium-ion cells, at up to 8A charge current. The ISL6258  
has default settings for 2-cell systems and ISL6258A has  
default settings for 3-cell systems. Integrated MOSFET  
drivers and bootstrap diode result in fewer components and  
smaller implementation area. Low offset current-sense  
amplifiers provide high accuracy.  
Features  
• ±0.5% System Voltage Accuracy (-10°C to +100°C)  
• ±3% Accurate Input Current Limit  
• ±3% Accurate Battery Charge Current Limit  
• Switching frequency can be reduced via SMBus for higher  
efficiency at light load conditions  
• Trickle Charge System for Deeply Discharged Batteries  
- Automatic Trickle Charge Current (256mA)  
- Holds Minimum Voltage to System  
• SMBus 2 Wire Serial Interface  
• Battery Short Circuit Protection  
• Fast System-Load Transient Response  
• Monitor Outputs  
- Adapter Current (2.5% Accuracy)  
- Battery Discharge Current (4% Accuracy)  
- Trickle Charge Mode Indicator  
- AC Adapter Present Indicator  
The ISL6258, ISL6258A provide two open drain digital  
outputs that indicate the presence of the AC adapter and  
trickle charge state. Trickle charge state and AC adapter  
present indicators are also available via SMBus. The  
ISL6258, ISL6258A also provide two analog outputs that  
indicate the adapter current and battery discharge current  
with 4% accuracy.  
• 11-Bit Max System Voltage Setting  
• 7-Bit Min System Voltage Setting  
• 6-Bit Charge Current Setting  
• 6-Bit Adapter Current Setting  
• Over 8A Battery Charger Current  
• Over 8A Maximum Adapter Current  
• +8V to +22V Adapter Voltage Range  
• Pb-Free (RoHS Compliant)  
Pinout  
ISL6258, ISL6258A  
(28 LD TQFN)  
TOP VIEW  
Applications  
• Notebook Computers  
28 27 26 25 24 23 22  
AGATE  
DCIN  
LGATE  
VDDP  
VDD  
1
2
3
4
5
6
7
21  
20  
19  
18  
Tablet PCs  
• Portable Equipment with Rechargeable Batteries  
ACIN  
VREF  
CSOP  
ICOMP  
AGND  
VCOMP  
17 CSON  
BGATE  
BMON  
16  
15  
8
9 10 11 12 13 14  
FN6571 Rev 1.00  
December 11, 2007  
Page 1 of 2  

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