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ISL6252AHAZ View Datasheet(PDF) - Intersil

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Data Sheet
ISL6252, ISL6252A
July 19, 2007
FN6498.1
Highly Integrated Battery Charger
Controller for Notebook Computers
The ISL6252, ISL6252A is a highly integrated battery charger
controller for Li-Ion/Li-Ion polymer batteries. High Efficiency is
achieved by a synchronous buck topology. The low side
MOSFET emulates a diode at light loads to improve the light
load efficiency and prevent system bus boosting.
The constant output voltage can be selected for 2, 3 and 4
series Li-Ion cells with 0.5% accuracy over-temperature. It
can also be programmed between 4.2V + 5%/cell and
4.2V - 5%/cell to optimize battery capacity. When supplying
the load and battery charger simultaneously, the input current
limit for the AC adapter is programmable to within 3%
accuracy to avoid overloading the AC adapter, and to allow
the system to make efficient use of available adapter power
for charging. It also has a wide range of programmable
charging current. The ISL6252, ISL6252A provides outputs
that are used to monitor the current drawn from the AC
adapter, and monitor for the presence of an AC adapter. The
ISL6252, ISL6252A automatically transitions from regulating
current mode to regulating voltage mode.
Ordering Information
PART
NUMBER
(Notes 1, 2)
ISL6252HRZ*
PART
MARKING
ISL 6252HRZ
TEMP
RANGE
(°C)
PACKAGE PKG.
(Pb-free) DWG. #
-10 to +100 28 Ld 5x5 QFN L28.5×5
ISL6252HAZ* ISL 6252HAZ -10 to +100 24 Ld QSOP M24.15
ISL6252AHRZ* ISL6252 AHRZ -10 to +100 28 Ld 5x5 QFN L28.5×5
ISL6252AHAZ* ISL6252 AHAZ -10 to +100 24 Ld QSOP M24.15
NOTES:
1. 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.
2. Add “-T” for Tape and Reel. Please refer to TB347 for details on reel
specifications.
Features
• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)
• ±3% Accurate Input Current Limit
• ±3% Accurate Battery Charge Current Limit
• ±25% Accurate Battery Trickle Charge Current Limit
• Programmable Charge Current Limit, Adapter Current
Limit and Charge Voltage
• Fixed 300kHz PWM Synchronous Buck Controller with
Diode Emulation at Light Load
• Overvoltage Protection
• Output for Current Drawn from AC Adapter
• AC Adapter Present Indicator
• Fast Input Current Limit Response
• Input Voltage Range 7V to 25V
• Support 2-, 3- and 4-Cells Battery Pack
• Up to 17.64V Battery-Voltage Set Point
• Thermal Shutdown
• Less than 10µA Battery Leakage Current
• Supports Pulse Charging
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Notebook, Desknote and Sub-notebook Computers
• Personal Digital Assistant
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 Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
 

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