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ISL9208IRZ PDF预览

ISL9208IRZ

更新时间: 2024-09-24 04:44:59
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电池
页数 文件大小 规格书
29页 503K
描述
Multi-Cell Li-ion Battery Pack OCP/Analog Front End

ISL9208IRZ 数据手册

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ISL9208  
®
Data Sheet  
February 16, 2007  
FN6446.0  
Multi-Cell Li-ion Battery Pack OCP/Analog  
Front End  
Features  
• Software selectable overcurrent protection levels and  
variable protect detection times  
The ISL9208 is an overcurrent protection device and analog  
front end for a microcontroller in a multi-cell Li-ion battery  
pack. The ISL9208 supports battery pack configurations  
consisting of 5 cells to 7 cells in series and 1 or more cells in  
parallel. The ISL9208 provides integral overcurrent  
protection circuitry, short circuit protection, an internal 3.3V  
voltage regulator, internal cell balancing switches, cell  
voltage monitor level shifters, and drive circuitry for external  
FET devices for control of pack charge and discharge.  
- 4 discharge overcurrent thresholds  
- 4 short circuit thresholds  
- 4 charge overcurrent thresholds  
- 8 overcurrent delay times (Charge)  
- 8 overcurrent delay times (Discharge)  
- 2 short circuit delay times (Discharge)  
• Automatic FET turn-off and cell balance disable on  
reaching external (battery) or internal (IC) temperature  
limit.  
Selectable overcurrent and short circuit thresholds reside in  
internal RAM registers. An external microcontroller sets the  
• Automatic over-ride of cell balance on reaching internal  
(IC) temperature limit.  
2
thresholds by setting register values through an I C serial  
interface. Internal registers also contain the detection delays  
for overcurrent and short circuit conditions.  
• Fast short circuit pack shutdown  
• Can use current sense resistor, FET r  
FET for overcurrent detection.  
, or Sense  
Using an internal analog multiplexer the ISL9208 provides  
monitoring of each cell voltage plus internal and external  
temperature by a separate microcontroller with an A/D  
converter. Software on this microcontroller implements all  
battery pack control functionality, except for overcurrent and  
short circuit shutdown.  
DS(ON)  
• Four battery backed software controlled flags.  
• Allows three different FET controls:  
- Back-to-back N-Channel FETs for charge and discharge  
control  
Ordering Information  
- Single N-Channel discharge FET.  
PART NUMBER  
(Note)  
PART  
MARKING  
PACKAGE  
(Pb-free)  
PKG.  
DWG. #  
- Single N-Channel FET for discharge, with separate,  
optional (smaller) back-to-back N-channel FETs for  
charge.  
ISL9208IRZ*  
ISL9208 IRZ  
32 Ld 5x5 QFN L32.5x5B  
*Add “-T” suffix for tape and reel.  
• Integrated Charge/Discharge FET Drive Circuitry with  
200µA (typ) turn-on current and 150mA (typ) Discharge  
FET turn-off current.  
NOTE: 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.  
• 10% Accurate 3.3V voltage regulator (minimum 25mA out  
with external NPN transistor having current gain of 70).  
• Monitored cell voltage output stable in 100µs.  
• Internal Cell balancing FETs handle up to 200mA of  
balancing current for each cell (with the number of cells  
being balanced limited by the maximum package power  
dissipation of 400mW).  
2
• Simple I C host interface  
• Sleep operation with programmable negative edge or  
positive edge wake up.  
• <10µA Sleep Mode  
• Pb-free plus anneal available (RoHS compliant)  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
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  
All other trademarks mentioned are the property of their respective owners.  

ISL9208IRZ 替代型号

型号 品牌 替代类型 描述 数据表
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8 to 12 Cell Li-Ion Battery Overcurrent Protection and Analog Front End Chip Set

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