ISL9203 Datasheet, PDF (1/16 Pages) Intersil Corporation – Li-ion/Li Polymer Battery Charger

®
Data Sheet
February 3, 2005
ISL9203
FN6106.0
Li-ion/Li Polymer Battery Charger
The ISL9203 is an integrated single-cell Li-ion or Li-polymer
battery charger capable of operating with an input voltage as
low as 2.4V. This charger is designed to work with various
types of ac adapters.
The ISL9203 operates as a linear charger when the ac
adapter is a voltage source. The battery is charged in a
CC/CV (constant current/constant voltage) profile. The
charge current is programmable with an external resistor up
to 1.5A. The ISL9203 can also work with a current-limited
adapter to minimize the thermal dissipation, in which case
the ISL9203 combines the benefits of both a linear charger
and a pulse charger.
The ISL9203 features charge current thermal foldback to
guarantee safe operation when the printed circuit board is
space limited for thermal dissipation. Additional features
include preconditioning of an over-discharged battery,
automatic recharge, and thermally enhanced DFN package.
Ordering Information
PART # (NOTE)
TEMP.
PKG. DWG.
RANGE (°C) PACKAGE
#
ISL9203CRZ
-20 to 70 10 Ld 3x3 DFN L10.3x3
ISL9203CRZ-T
10 Ld 3x3 DFN Tape and Reel
NOTE: "Z" Suffix: Intersil Pb-free 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
5V
Input
VIN
VBAT
ISL9203
C₁
C₂
Floating
to Enable
FAULT
STATUS
EN
VSEN
V2P8
IREF
TIME GND
C_TIME
C₃
R_IREF
Features
• Pb-Free Available (RoHS Compliant)
• Complete Charger for Single-Cell Li-ion Batteries
• Very Low Thermal Dissipation
• Integrated Pass Element and Current Sensor
• No External Blocking Diode Required
• 1% Voltage Accuracy
• Programmable Current Limit up to 1.5A
• Charge Current Thermal Foldback
• Accepts Multiple Types of Adapters
• Guaranteed to Operate at 2.65V After Start Up
• Ambient Temperature Range: -20°C to 70°C
• Thermally-Enhanced DFN Packages
Applications
• Handheld Devices including Medical Handhelds
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Self-Charging Battery Packs
• Stand-Alone Chargers
• USB Bus-Powered 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”
Pinout
ISL9203 (3x3 DFN)
TOP VIEW
VIN 1
FAULT 2
STATUS 3
TIME 4
GND 5
10 VBAT
9 VSEN
8 IREF
7 V2P8
6 EN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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