廬
ISL6299
Data Sheet
March 17, 2005
FN9184.0
Li-ion/Li-Polymer Battery Charger
Accepting Two Power Sources
The ISL6299 is a fully integrated low-cost single-cell Li-ion or
Li-polymer battery charger. The charger accepts two power
inputs, normally one from a USB (Universal Serial Bus) port
and the other from a desktop cradle. The ISL6299 is an ideal
charger for smart handheld devices that need to
communicate with a personal computer via USB.
cradle and the USB inputs respectively. Due to the 28V
rating for the cradle input, low-cost, large output tolerance
adapters can be used safely. When both inputs are powered,
the cradle input is used to charge the battery. The charge
current is programmable for the cradle input with a small
resistor. The end-of-charge current for the cradle input is
also programmable by another external resistor. The charger
incorporates Thermaguard鈩?which protects the IC against
over temperature. If the die temperature rises above a
typical value of 100擄C, a thermal foldback function reduces
the charge current automatically to prevent further
temperature rise. The charger preconditions the battery with
low current when the battery voltage is below 2.6V. The
charger has two indication pins. The PPR (power present)
pin outputs an open-drain logic LOW when either the cradle
or the USB input power is attached. The CHG (charge) pin is
also an open-drain output that indicates a logic LOW when
the charge current is above a minimum current level. When
the charge current is below the minimum current, the CHG
pin indicates a logic HIGH signal and the status is latched.
The latch will be reset at one of these events: (1) the part is
disabled and re-enabled; (2) the selected input source has
been removed and re-applied, (3) The USBON turns LOW,
or (4) The BAT pin voltage falls below the CV mode
threshold.
Features
鈥?Complete Charger for Single-Cell Li-ion/Polymer Batteries
鈥?Dual Input Power Sources for Cradle and USB
鈥?Low Component Count
鈥?Integrated Pass Element
鈥?Fixed 380mA USB Charge Current
鈥?Programmable Cradle Charge Current
鈥?Charge Current Thermaguard鈩?for Thermal
Protection
鈥?28V Maximum Voltage for the Cradle Input
鈥?Charge Indication
鈥?Adapter Presence Indication
鈥?Less than 0.5碌A(chǔ) Leakage Current off the Battery when No
Input Power Attached
鈥?Programmable end-of-charge current with latch for Cradle
Input
鈥?Ambient Temperature Range: -40擄C to 85擄C
鈥?Pb-Free Available (RoHS Compliant)
Applications
鈥?Smart Handheld Devices
鈥?Cell Phones, PDAs, MP3 Players
鈥?Digital Still Cameras
鈥?Handheld Test Equipment
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
鈥?Technical Brief TB389 鈥淧CB Land Pattern Design and
Surface Mount Guidelines for QFN Packages鈥?/div>
Ordering Information
PART #
ISL6299IRZ (Note)
ISL6299IRZ-T (Note)
TEMP.
RANGE (擄C)
-40 to 85
PACKAGE
PKG.
DWG. #
10 Ld 3x3 DFN L10.3x3
(Pb-free)
Pinout
ISL6299 (DFN)
TOP VIEW
10 Ld 3x3 DFN Tape and Reel (Pb-free)
CRDL
USB
PPR
CHG
EN
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.
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10
BAT
9
8
7
6
ICDL
GND
USBON
IMIN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved. Thermaguard is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
INTERSIL
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