1
FN6435.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL9301
High Input Voltage Charger With Power
Path Management
The ISL9301 is a fully integrated high input voltage
single-cell Li-ion battery charger with power path
management function. This charger performs the CC/CV
charge function required by Li-ion batteries. The charger
accepts an input voltage up to 28V but is disabled when the
input voltage exceeds 10.5V OVP threshold. The 28V rating
eliminates the overvoltage protection circuit required in a
low-voltage charger. The charge current and the
end-of-charge (EOC) current are programmable with
external resistors. When the battery voltage is lower than
2.8V, the charger preconditions the battery with 16% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, the EOC indicator (CHG
) will toggle to
logic HIGH to indicate the end-of-charge condition. The
charger will continue to charge until the user programmed
timeout interval has elapsed, then the charger is terminated.
The ISL9301 uses separate power paths to supply the
system load and charge the battery. This feature allows the
system to immediately operate with a completely discharged
battery. This feature also allows the charge to terminate
when the battery is full while continuing to supply the system
with the input source, thus minimizing unnecessary
charge/discharge cycles and improving the battery life.
Two indication pins (PPR
and CHG) allow simple interface to
a microprocessor or LEDs.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Power Path Management Optimize Charge and System
Currents
• Intelligent Timeout Interval Based on Actual Charge
Current
• Integrated Disconnect Switch to Disconnect the Battery
• 1% Charger Output Voltage Accuracy
• Programmable Charge Current
• Programmable End-of-Charge Current
• Charge Current Thermal Foldback for Thermal Protection
• Trickle Charge for Fully Discharged Batteries
• 28V Maximum Voltage at VIN pin
• Power Presence and Charge Indications
• Ambient Temperature Range: -40°C to +85°C
• 10 Ld 3x3 DFN Package
• Pb-Free (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
•PDAs
• MP3 Players
• Stand-Alone Chargers
• Other Handheld Devices
Pinout
ISL9301
(10 LD DFN)
TOP VIEW
Ordering Information
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL9301IRZ 9301 -40 to +85 10 Ld 3x3 DFN L10.3x3C
ISL9301IRZ-T 9301 -40 to +85 10 Ld 3x3 DFN L10.3x3C
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish, which
is 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.
3. For Moisture Sensitivity Level (MSL), please see device
information page for ISL9301
. For more information on MSL,
please see Technical Brief TB363
.
2
3
4
1
5
9
8
7
10
6
VOUT
BATON
IREF
IMIN
GND
VIN
VBAT
PPR
CHG
TIME
Data Sheet September 21, 2011
