ISL9209C| Datasheet

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ISL9209C
Data Sheet May 21, 2007 FN6489.0

Charging System Safety Circuit
The ISL9209C is an integrated circuit (IC) optimized to provide a redundant safety protection to a Li-ion battery from failures of a 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 P-Channel MOSFET to remove the power from the charging system. In addition to the above protected parameters, the IC also monitors its own internal temperature and turns off the P-Channel MOSFET when the temperature exceeds +140 C. Together with the battery charger IC and the protection module in a battery pack, the charging system using the ISL9209C has triple-level protection and is two-fault tolerant. The IC is designed to turn on the internal PFET slowly to avoid in-rush current at power-up but will turn off the PFET quickly when the input is overvoltage in order to remove the power before any damage occurs. The ISL9209C has a logic warning output to indicate the fault and an enable input to allow t
he system to remove the input power.

Features
Fully Integrated Protection Circuit for Three Protected Variables High Accuracy Protection Thresholds User Programmable Overcurrent Protection Threshold Input Overvoltage Protection in Less Than 1s High Immunity of False Triggering Under Transients Warning Output to Indicate the Occurrence of Faults Enable Input Easy to Use Thermal Enhanced TDFN Package Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
Cell Phones Digital Still Cameras PDAs and Smart Phones

Ordering Information
PART NUMBER PART TEMP. (Note) MARKING RANGE ( C) ISL9209CIRZ* 09CZ -40 to +85 PACKAGE (Pb-free) PKG. DWG. #

Portable Instruments Desktop Chargers

12 Ld 4x3 TDFN L12.4x3A

Related Literature
Technical Brief TB363 "Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)" Technical Brief TB379 "Thermal Characterization of Packaged Semiconductor Devices" Technical Brief TB389 "PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages"

*Add "-T" suffix for tape and reel. 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.

Typical Application Circuit
INPUT VIN OUT ISL6292 BATTERY CHARGER

Pinout
ISL9209C (12 LD 4x3 TDFN) TOP VIEW

ISL9209C ILIM VB RVB EN RILIM GND WRN BATTERY PACK VIN VIN GND WRN NC NC 1 2 3 EPAD 4 5 6 9 8 7 ILIM VB EN 12 NC 11 OUT 10 OUT

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. All other trademarks mentioned are the property of their respective owners.