廬
ISL9203A
Data Sheet
February 14, 2007
FN6430.0
Li-ion/Li Polymer Battery Charger
The ISL9203A 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 ISL9203A 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 ISL9203A can also work with a current-limited
adapter to minimize the thermal dissipation, in which case
the ISL9203A combines the benefits of both a linear charger
and a pulse charger.
The ISL9203A 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 and
thermally enhanced DFN package.
Features
鈥?Complete Charger for Single-Cell Li-ion Batteries
鈥?Very Low Thermal Dissipation
鈥?Integrated Pass Element and Current Sensor
鈥?No External Blocking Diode Required
鈥?1% Voltage Accuracy
鈥?Programmable Current Limit up to 1.5A
鈥?Charge Current Thermal Foldback
鈥?Accepts Multiple Types of Adapters
鈥?Guaranteed operation down to V
IN
= 2.65V after start up
鈥?Ambient Temperature Range: -20
擄
C to +70
擄
C
鈥?Thermally-Enhanced DFN Packages
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
鈥?Handheld Devices including Medical Handhelds
鈥?PDAs, Cell Phones and Smart Phones
鈥?Portable Instruments, MP3 Players
Typical Application Circuit
5V
INPUT
C1
R1
VIN
VBAT
C2
鈥?Self-Charging Battery Packs
鈥?Stand-Alone Chargers
鈥?USB Bus-Powered Chargers
ISL9203A
VSEN
STATUS
V2P8
EN
TIME
IREF
GND
R IREF
C3
FLOATING
TO ENABLE
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
鈥?Technical Brief TB379 鈥淭hermal Characterization of
Packaged Semiconductor Devices鈥?/div>
鈥?Technical Brief TB389 鈥淧CB Land Pattern Design and
Surface Mount Guidelines for QFN Packages鈥?/div>
CTIME
Ordering Information
PART NUMBER
PART
(Note)
MARKING
ISL9203ACRZ
03ACZ
TEMP.
RANGE
(擄C)
-20 to +70
PACKAGE
(Pb-free)
PKG
DWG. #
Pinout
ISL9203A
(10 LD 3x3 DFN)
TOP VIEW
10 Ld 3x3 DFN L10.3x3
VIN
NC
STATUS
TIME
GND
1
2
3
4
5
10 VBAT
9
8
7
6
VSEN
IREF
V2P8
EN
ISL9203ACRZ-T 10 Ld 3x3 DFN 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.
1
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 漏 Intersil Americas Inc. 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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