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ISL9211IRU58XZ-T

更新时间： 2024-01-24 23:42:42
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9页 484K
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Charging System Safety Circuit

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DATASHEET  
ISL9211  
Charging System Safety Circuit  
FN6658  
Rev 4.00  
January 13, 2009  
The ISL9211 is an integrated circuit (IC) optimized to provide  
a redundant safety protection to a Li-ion battery charging  
system. The IC monitors the input voltage, the battery  
voltage, and the charge current. When any of the three  
parameters exceeds its limit, the IC turns off an internal  
N-channel MOSFET to remove the power from the charging  
system to the battery. In addition to the above protected  
parameters, the IC also monitors its own internal  
temperature and turns off the N-channel MOSFET when the  
temperature exceeds +150°C. Together with the battery  
charger IC and the protection module in a battery pack, the  
charging system using the ISL9211 has triple-level  
protection and is two-fault tolerant.  
Features  
• 24V Max Input Voltage  
• Supports Up To 1.5A Input Current  
• Fully Integrated Protection Circuit for Three Protected  
Variables  
• High Accuracy Protection Thresholds  
• User Programmable Overcurrent Protection Threshold  
• Responds To Input Overvoltage in Less Than 1µs  
• High Immunity of False Triggering Under Transients  
• Fault Indication for Various Fault Occurrence  
• Easy to Use  
The IC is designed to turn on the internal NFET slowly to  
avoid inrush current at power up but will turn off the NFET  
quickly when the input is overvoltage in order to remove the  
power before any damage occurs. The ISL9211 has a logic  
flag output to indicate a fault condition.  
• Pb-Free (RoHS Compliant)  
Applications  
• Cell Phones  
Typical Application Circuit  
• Digital Still Cameras  
• PDAs and Smart Phones  
• Portable Instruments  
• Desktop Chargers  
INPUT  
VIN  
OUT  
ISL6292  
BATTERY  
CHARGER  
C1  
C2  
ISL9211  
Related Literature  
VB  
ILIM  
• Technical Brief TB363 “Guidelines for Handling and  
Processing Moisture Sensitive Surface Mount Devices  
(SMDs)”  
RVB  
RILIM  
BATTERY  
PACK  
GND  
FAULT  
• Technical Brief TB379 “Thermal Characterization of  
Packaged Semiconductor Devices”  
• Technical Brief TB389 “PCB Land Pattern Design and  
Surface Mount Guidelines for QFN Packages”  
Ordering Information  
TEMP  
Pinout  
PART  
RANGE PACKAGE PKG.  
(°C) (Pb-Free) DWG. #  
ISL9211  
(8 LD 2x2 ΜTDFN)  
TOP VIEW  
PART NUMBER  
MARKING  
ISL9211IRU58XZ-T* 15X  
ISL9211IRU68XZ-T* 16X  
-40 to +85 8 Ld µTDFN L8.2x2  
-40 to +85 8 Ld µTDFN L8.2x2  
*Please refer to TB347 for details on reel specifications.  
VIN  
OUT  
1
2
3
4
8
7
6
5
NOTE: These Intersil Pb-free plastic packaged products employ  
special Pb-free material sets; molding compounds/die attach  
materials and NiPdAu plate - e4 termination finish, which is 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.  
GND  
NC  
ILIM  
VB  
FAULT  
GND  
FN6658 Rev 4.00  
January 13, 2009  
Page 1 of 9  
1234567...9

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