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

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.

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Copyright © Intersil Americas Inc. 2005. All Rights Reserved.

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