
1
FN9241.0
ISL9200
Charging System Safety Circuit
The ISL9200 is an integrated circuit (IC) optimized to provide
a Li-ion battery redundant safety protection 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 die temperature exceeds
140°C. Together with the battery charger IC and the
protection module in a battery pack, the charging system
using the ISL9200 has triple-level protection and is two-fault
tolerant.
The IC is designed to turn on the internal PFET slowly to
avoid inrush current at power-up but will turn off the PFET
quickly when input overvoltage is detected, in order to
remove the power before any damage occurs. The ISL9200
has a logic warning output to indicate the fault and an enable
input to allow the system to remove the input power.
Typical Application Circuit
Features
Fully Integrated Protection Circuit for Three Protection
Variables
- User Programmable Overcurrent Protection Threshold
- Input Overvoltage Protection in Less Than 1μs
- Battery Overvoltage Protection
High Immunity of False Triggering Under Transients
High Accuracy Protection Thresholds
Warning Output to Indicate the Occurrence of Faults
Enable Input
Thermal Enhanced DFN Package
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Cell Phones
Digital Still Cameras
PDAs and Smart Phones
Portable Instruments
Desktop Chargers
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”
Ordering Information
PART #
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL9200IRZ*
(Note)
00Z
-40 to 85
12 Ld 4x3 DFN
(Pb-free)
L12.4x3
ISL9200EVAL1 ISL9200 Evaluation Board
*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.
INPUT
ISL6292
BATTERY
CHARGER
R
VB
C
1
R
ILIM
BATTERY
PACK
ISL9200
ILIM
WRN
VIN
GND
VB
OUT
EN
+
Pinout
ISL9200 (4x3 DFN)
TOP VIEW
NOTE: EPAD must be electrically connected to the GND pin.
VIN
VIN
GND
WRN
OUT
ILIM
VB
NC
OUT
NC
NC
EN
2
3
4
1
5
11
10
9
12
8
6
7
EPAD
Data Sheet
October 4, 2005
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. 2005. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.